Today's Message Index:
----------------------
1. 03:43 AM - Cell phone (Jack Kuehn)
2. 04:44 AM - Re: Cell phone (Joe Dubner)
3. 06:40 AM - Market Survey (Robert L. Nuckolls, III)
4. 06:40 AM - Re: RF (Robert L. Nuckolls, III)
5. 06:53 AM - Re: Cell phone (Brian Lloyd)
6. 09:33 AM - Gear Switch (Jon & Kathryn Hults)
7. 10:06 AM - Re: Gear Switch (Bruce Gray)
8. 10:34 AM - Re: Gear Switch (Mike)
9. 11:48 AM - Re: Gear Switch (Mark R Steitle)
10. 02:40 PM - Re: Dual Alternator, Response (Jekyll)
11. 03:03 PM - Re: Re: Dual Alternator, Response (Robert L. Nuckolls, III)
12. 03:14 PM - Re: Alt/Batt switch question (Robert L. Nuckolls, III)
13. 03:14 PM - Z-13/8 Ammeters (Jekyll)
14. 03:29 PM - Re: Z-13/8 Ammeters (Robert L. Nuckolls, III)
15. 03:36 PM - Re: Cell phone (Kingsley Hurst)
16. 04:06 PM - Re: Z-13/8 Ammeters (Jekyll)
17. 04:39 PM - Re: Cell phone (Wayne Reese)
18. 05:34 PM - Sorta repeat question (Alan K. Adamson)
19. 05:38 PM - Re: Cell phone (Dave Morris \)
20. 05:54 PM - Re: Cell phone (Larry Rosen)
21. 05:57 PM - Re: Cell phone (Brian Lloyd)
22. 06:01 PM - Re: Cell phone (Wayne Reese)
23. 06:15 PM - Re: Cell phone (Jack Kuehn)
24. 06:44 PM - legal Cell phone (Jack Kuehn)
25. 06:45 PM - very sensitive current monitor? (D Wysong)
26. 06:51 PM - Re: Cell phone (Jim Corner)
27. 07:30 PM - Re: Cell phone (Jack Kuehn)
28. 07:35 PM - Re: legal Cell phone (Brian Lloyd)
29. 08:06 PM - current sensor (Allan Aaron)
30. 09:33 PM - Re: Cell phone (Tim Olson)
Message 1
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--> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
am trying to find a way to connect a cell phone into the intercom. I
tried using an earphone jack plugged into the record output and music
input, but this did not work. Does anyone have a solution, or does
anyone know why this does not work? Thanks
Jack
Message 2
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--> AeroElectric-List message posted by: Joe Dubner <jdubner@yahoo.com>
Jack,
I suspect the problem is the impedance level. Another way of saying
this is that the voltage (but not power) level of the cellphone is too
low to drive the intercom's music input. I added a tiny 8-ohm to
1000-ohm transformer to step up the audio level when I connected my MP3
player's headphone output to the music input of my Softcomm ATC-2P with
good results. (The 8-ohm winding is connected to the MP3 player of
course). Without the transformer the audio level was too low to be useful.)
Also, I'd encourage you to telephone Softcomm in Chandler, AZ. On the
two occasions I've dealt with them, I've found their service to be
outstanding.
--
Joe
Long-EZ 821RP
Lewiston, ID
On 29-Mar-06 03:35 Jack Kuehn wrote:
> --> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
>
> I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
> am trying to find a way to connect a cell phone into the intercom. I
> tried using an earphone jack plugged into the record output and music
> input, but this did not work. Does anyone have a solution, or does
> anyone know why this does not work? Thanks
>
> Jack
Message 3
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
Thanks to those who responded to the survey on annunciator
panel functions. I had lunch with the 'crew' yesterday and
turned the data from 21 useful responses over to them.
We'll see how it influences their design decisions.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
Message 4
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--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 09:55 AM 3/20/2006 -0800, you wrote:
>--> AeroElectric-List message posted by: "Hinde, Frank George (Corvallis)"
><frank.hinde@hp.com>
>
> Speaking of RF...I have had a long standing noise in my radio
>problem...Ok unitl the alternator starts charging then you get
>everything, ignition, alternator, strobes...Lovely....And its not on the
>intercom as it varies with radio volume.
>
>A complete aside...While working in my shop I noticed National public
>broadcasting got noisy the moment I plugged in my battery drill battery
>to its smart charger...Hmmm I wonder?
>
>In the plane I have a battery charger on the GPS powered from ship....So
>yesterday while out flying I unplugged it.
>
>Noise went away immediately and I can turn the noise on and off by
>plugging and plugging the power lead...Ah HA!
>
>Did I simply not ground the charger properly?
Not necessarily. I have several cigar lighter chargers
for maintaining cell phones in the car. One particular
model is a prodigious producer of noise in the AM broadcast
band. The types and numbers of switchmode power supplies in
the wild on consumer products have made the FCC's noble rules
for management of inter-system interference a fond wish with
zero chance for meaningful enforcement.
This phenomenon is going to grow.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
Message 5
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--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Jack Kuehn wrote:
> --> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
>
> I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
> am trying to find a way to connect a cell phone into the intercom. I
> tried using an earphone jack plugged into the record output and music
> input, but this did not work. Does anyone have a solution, or does
> anyone know why this does not work? Thanks
There is a basic problem here. Your cellphone is a full-duplex device in
that it receives and transmits at the same time. If you connect a
headphone output to the input of your cellphone and the earphone output
of your cellphone to the music input on your intercom, you have set up a
feedback path. Everything that your cellphone receives will be sent
right back out your cellphone again. You need to somehow isolate the
receive audio from getting back into the mic input on the cellphone.
There are cellphone adapters that put the cellphone between your headset
and the rest of the airplane's audio system. These seem to work quite
well. PS Engineering also has cellphone support in their audio panel.
This is probably the most elegant (and expensive) solution.
Probably the simplest solution is to just wire your audio panel so that
the cell phone appears as another comm radio. You would have to use it
half-duplex and set it up so that PTT activates the mic audio to the
cell phone and mutes the receive audio from the cell phone. A DPDT relay
driven by the PTT line that uses one set of NC contacts to close the
path for the receive audio and the other set of NO contact to close the
path for the transmit audio would make this work just fine.
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 6
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--> AeroElectric-List message posted by: Jon & Kathryn Hults <legacy@speedband.com>
Bob,
I need a large (not miniature) lever-locking toggle/bat switch for my
landing gear. Problem is it needs to have 12 contacts (does that make it a
4PDT?). The one I have is WAY too small for a landing gear switch.
I've search the web and all the catalogs I have to no avail. Any ideas from
your vast knowledge of sources?
Thanks,
Jon Hults
Legacy #250
Message 7
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--> AeroElectric-List message posted by: "Bruce Gray" <Bruce@glasair.org>
Take a look at the TL series Honeywell swict. They have models up to 4 PDT.
http://catalog.sensing.honeywell.com/vsg_compare.asp?FAM=trSG&ITEMLIST=14345
9,143460,143461,143462,143464
Bruce
www.glasair.org
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jon &
Kathryn Hults
Sent: Wednesday, March 29, 2006 12:27 PM
Subject: AeroElectric-List: Gear Switch
--> AeroElectric-List message posted by: Jon & Kathryn Hults
<legacy@speedband.com>
Bob,
I need a large (not miniature) lever-locking toggle/bat switch for my
landing gear. Problem is it needs to have 12 contacts (does that make it a
4PDT?). The one I have is WAY too small for a landing gear switch.
I've search the web and all the catalogs I have to no avail. Any ideas from
your vast knowledge of sources?
Thanks,
Jon Hults
Legacy #250
Message 8
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--> AeroElectric-List message posted by: "Mike" <mlas@cox.net>
Why do you need a switch like that?
Mike
Legacy # 268 Flying with a dual gear safety system.
--> AeroElectric-List message posted by: Jon & Kathryn Hults
<legacy@speedband.com>
Bob,
I need a large (not miniature) lever-locking toggle/bat switch for my
landing gear. Problem is it needs to have 12 contacts (does that make
it a
4PDT?). The one I have is WAY too small for a landing gear switch.
I've search the web and all the catalogs I have to no avail. Any ideas
from
your vast knowledge of sources?
Thanks,
Jon Hults
Legacy #250
--
1/16/2006
--
1/16/2006
Message 9
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--> AeroElectric-List message posted by: "Mark R Steitle" <mark.steitle@austin.utexas.edu>
Jon,
Try www.onlinecomponents.com, p/n 4NT1-12, $33.00/ea. According to
their web site they have 38 in stock.
Mark Steitle
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jon &
Kathryn Hults
Sent: Wednesday, March 29, 2006 11:27 AM
Subject: AeroElectric-List: Gear Switch
--> AeroElectric-List message posted by: Jon & Kathryn Hults
<legacy@speedband.com>
Bob,
I need a large (not miniature) lever-locking toggle/bat switch for my
landing gear. Problem is it needs to have 12 contacts (does that make
it a
4PDT?). The one I have is WAY too small for a landing gear switch.
I've search the web and all the catalogs I have to no avail. Any ideas
from
your vast knowledge of sources?
Thanks,
Jon Hults
Legacy #250
Message 10
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| Subject: | Re: Dual Alternator, Response |
--> AeroElectric-List message posted by: "Jekyll" <rcitjh@aol.com>
nuckollsr(at)cox.net wrote:
> At 08:38 PM 2/7/2006 -0500, you wrote:
>
>
> >
> >
> > (from)... time to time, it
> > would make sense to shut off the main alternator and energize the SD-8 (on
> > downwind to landing, for example, in daylight) every now and then just to
> > keep the electrons knowing where to go within the rather un-used wiring and
> > to verify, via the voltmeter, that the SD-8 is indeed pumping and keeping
> > the busses filled.
> >
> >
>
> You can pre-flight check it. In fact, this is one of several
> design goals for being able to turn either alternator on or off
> at any time under any conditions. During mag check at elevated
> RPM you could cycle the alternators to see that both are alive.
>
> Bob . . .
Does this not invite load dump spikes? If not, why? I'm more than happy to add
this to the run-up checks if it won't damage the systems.
Jekyll
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=25080#25080
Message 11
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| Subject: | Re: Dual Alternator, Response |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 02:36 PM 3/29/2006 -0800, you wrote:
>--> AeroElectric-List message posted by: "Jekyll" <rcitjh@aol.com>
>
>
>nuckollsr(at)cox.net wrote:
> > At 08:38 PM 2/7/2006 -0500, you wrote:
> >
> >
> > >
> > >
> > > (from)... time to time, it
> > > would make sense to shut off the main alternator and energize the
> SD-8 (on
> > > downwind to landing, for example, in daylight) every now and then just to
> > > keep the electrons knowing where to go within the rather un-used
> wiring and
> > > to verify, via the voltmeter, that the SD-8 is indeed pumping and keeping
> > > the busses filled.
> > >
> > >
> >
> > You can pre-flight check it. In fact, this is one of several
> > design goals for being able to turn either alternator on or off
> > at any time under any conditions. During mag check at elevated
> > RPM you could cycle the alternators to see that both are alive.
> >
> > Bob . . .
>
>
>Does this not invite load dump spikes? If not, why? I'm more than happy to
>add this to the run-up checks if it won't damage the systems.
Not if they're designed out of the system. This has
never been an issue with contemporary certified systems.
It's not an issue for any of the B&C products.
It's this designer's goal to see that they're not
an issue with OBAM aircraft installations using
any brand of internally regulated alternator.
It's my intent to offer a means by which any alternator may
be turned on or off at any time under any conditions for any
reason without regard or concern for damaging anything.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
Message 12
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| Subject: | Re: Alt/Batt switch question |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 04:47 PM 3/26/2006 -0500, you wrote:
>--> AeroElectric-List message posted by: "Alan K. Adamson"
><aadamson@highrf.com>
>
>Take Z14 for example. I know there has been lots of discussion about not
>doing Avionics masters, but I have a somewhat related question.
>
>I have an IO-550 with dual alt/batts. One alt will be a regular engine
>driven one and it will be on the primary buss. The other, and SD-20, will
>be on the essential buss.
>
>So, in the scenario where I perform the initial startup, How does the VR and
>the Backup alternator perform under this scenario.
>
>A) I put the primary master in ALT+BATT.
>B) I leave the CROSS TIE contactor OFF,
>C) I put the Essential buss master to BATT only, not to ALT. I do this
>because the engine instrumentation is on the essential buss and I want to
>prime and watch for static fuel pressure, etc.
You can turn on battery only or turn on both alternators too . . .
doesn't matter in the grand scheme of things.
>So, the primary battery provides all the power required for start and the
>fuel pump (it's a Mag based engine). The backup battery is providing just
>the power for the essential buss (in my case, the PFD EFIS, the AHRS, the
>Magnetometer and the Engine instruments).
>
>Once running, I switch the essential master to ALT and that should start the
>backup alternator charging the system.
>
>My real question is, is just having the ALT switch to the VR open, enough to
>cause the alternator *not* to put out a charge until after I switch the
>switch?
Assuming that you're using externally regulated alternators as illustrated
in Z-14 then if the alternator switch is not ON, then the alternator
controlled
by that switch is OFF. You can turn it on after starting or before
starting,
it doesn't matter.
>Perhaps I don't understand all the mechanics, but from the B&C datasheet on
>the VR, (it's one of theirs), that is how you test it, so I figured, it
>wouldn't hurt to start this way?
It doesn't HURT anything to start any way you wish. What you do
want to do is craft a preflight test that sorts through all your
marbles to see that they're in place before takeoff. From a human
factors perspective, you want to do one thing and observe one result.
MAIN bat ON . . . . stuff lights up. MAIN LO VOLTS
flashes.
AUX bat ON . . . . more stuff lights up. AUX LOW
VOLTS light flashes.
Engine START . . . . oil pressure rises.
MAIN alt ON . . . . MAIN LOW VOLTS warning
goes dark.
AUX alt ON . . . . AUX LOW VOLTS warning
goes dark.
>Would it be better to switch the cross tie on prior to switching on the
>second alternator, or does *any* of this matter?
Why? The cross tie is there for one of two reasons: (1) allow sharing
of energy sources during a failure event on one side or the other and
(2) letting two batteries do the job of getting the engine started. If
stuff on the aux bus doesn't run well in the real world of starter-
in-rush-brown-out, then (2) is not an option for you. This leaves only
(1) which (given the inherent reliability of modern batteries and
alternators) should be a very rare event. You might want to include it
in the pre-flight checklist by closing the cross tie, turn aux battery
and alternator OFF to see that the aux bus stays lit then return the
system to the flight configuration.
Bob . . .
Message 13
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--> AeroElectric-List message posted by: "Jekyll" <rcitjh@aol.com>
Can the loadmeter outputs from the main and SD-8 alternators be connected to the
same ammeter? I'm thinking that when the main goes silent, the load showing
will just be the SD-8. If so, do I need to do anything in the way of additional
diodes or such?
I'm using the EIS-4000 with the current sensor option.
Jekyll
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=25086#25086
Message 14
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| Subject: | Re: Z-13/8 Ammeters |
--> AeroElectric-List message posted by: "Robert L. Nuckolls, III" <nuckollsr@cox.net>
At 03:13 PM 3/29/2006 -0800, you wrote:
>--> AeroElectric-List message posted by: "Jekyll" <rcitjh@aol.com>
>
>Can the loadmeter outputs from the main and SD-8 alternators be connected
>to the same ammeter? I'm thinking that when the main goes silent, the load
>showing will just be the SD-8. If so, do I need to do anything in the way
>of additional diodes or such?
>
>I'm using the EIS-4000 with the current sensor option.
If you plan to run the EIS-4000 from the e-bus, then it
makes sense to run both alternator feeders through the
same sensor.
Bob . . .
Message 15
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--> AeroElectric-List message posted by: "Kingsley Hurst" <khurst@taroom.qld.gov.au>
> I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
am trying to find a way to connect a cell phone into the intercom.
Hello Jack,
May I suggest this as a definitive answer to your problem.
http://www.mcp.com.au/xcom760/build1509/main-page.html
Click on Accessories then look at the 3rd item down.
I bought one and gave it to one of my sons who is flying regularly in a
C206. When he rings me, I cannot tell whether is in the aircraft or
not. Works incredibly well and I highly recommend it.
Regards
Kingsley in Oz.
Message 16
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| Subject: | Re: Z-13/8 Ammeters |
--> AeroElectric-List message posted by: "Jekyll" <rcitjh@aol.com>
Yes, E-bus.
Thanks for the VERY quick reply.
Jekyll
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=25103#25103
Message 17
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--> AeroElectric-List message posted by: "Wayne Reese" <webfootboat@comcast.net>
Excuse me for jumping in here. I have a ps8000sr that includes a cell phone
connection which I have not been able to try simply because it requires a
cord with a 2.5 mm connection of each end (stereo I believe) and I have not
been able to find a cable anywhere. Any suggestions?
Wayne
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Brian
Lloyd
Sent: Wednesday, March 29, 2006 7:52 AM
Subject: Re: AeroElectric-List: Cell phone
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Jack Kuehn wrote:
> --> AeroElectric-List message posted by: Jack Kuehn
<jkuehn@mountaintime.myrf.net>
>
> I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
> am trying to find a way to connect a cell phone into the intercom. I
> tried using an earphone jack plugged into the record output and music
> input, but this did not work. Does anyone have a solution, or does
> anyone know why this does not work? Thanks
There is a basic problem here. Your cellphone is a full-duplex device in
that it receives and transmits at the same time. If you connect a
headphone output to the input of your cellphone and the earphone output
of your cellphone to the music input on your intercom, you have set up a
feedback path. Everything that your cellphone receives will be sent
right back out your cellphone again. You need to somehow isolate the
receive audio from getting back into the mic input on the cellphone.
There are cellphone adapters that put the cellphone between your headset
and the rest of the airplane's audio system. These seem to work quite
well. PS Engineering also has cellphone support in their audio panel.
This is probably the most elegant (and expensive) solution.
Probably the simplest solution is to just wire your audio panel so that
the cell phone appears as another comm radio. You would have to use it
half-duplex and set it up so that PTT activates the mic audio to the
cell phone and mutes the receive audio from the cell phone. A DPDT relay
driven by the PTT line that uses one set of NC contacts to close the
path for the receive audio and the other set of NO contact to close the
path for the transmit audio would make this work just fine.
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 18
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| Subject: | Sorta repeat question |
--> AeroElectric-List message posted by: "Alan K. Adamson" <aadamson@highrf.com>
I sent a note to the list looking for a little feedback, but I didn't get
any, perhaps I asked too complicated of a question so I'll try again.
In a dual alt/batt system (Z14). Can I start the airplane with the primary
switch in ALT+BATT, and the secondary switch in BATT only? By doing so
*and* leaving the cross tie switch OFF, I use the primary battery for
starting. My engine monitor and other items are on the secondary buss and
it would be running on the secondary battery only.
Then is there then any issue with switching the secondary switch into the
ALT+BATT mode to start the secondary alternator?
What kind of "inrush" problems might I have. I designed for electronic
ignition even tho phase 1 will I'll be using mags.
Thanks in advance,
Alan
Message 19
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--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
Unless I'm mistaken, I believe it is still against FCC regulations
(47CFR 22.925) to operate a cellular phone onboard an aircraft that
is in the air. This is because the signal will be picked up by
multiple cell towers at the same time and will lock out a significant
amount of bandwidth.
See
http://a257.g.akamaitech.net/7/257/2422/09nov20051500/edocket.access.gpo.gov/cfr_2005/octqtr/47cfr22.925.htm
Dave Morris
At 05:35 AM 3/29/2006, you wrote:
>--> AeroElectric-List message posted by: Jack Kuehn
><jkuehn@mountaintime.myrf.net>
>
>I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
>am trying to find a way to connect a cell phone into the intercom. I
>tried using an earphone jack plugged into the record output and music
>input, but this did not work. Does anyone have a solution, or does
>anyone know why this does not work? Thanks
>
>Jack
>
>
Message 20
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--> AeroElectric-List message posted by: Larry Rosen <LarryRosen@comcast.net>
But it does not prohibit the use of a cell phone while on the ground
with the engine running. Very useful when at an airport with out a
tower trying to get a clearance.
Larry
Dave Morris "BigD" wrote:
>--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
>
>Unless I'm mistaken, I believe it is still against FCC regulations
>(47CFR 22.925) to operate a cellular phone onboard an aircraft that
>is in the air. This is because the signal will be picked up by
>multiple cell towers at the same time and will lock out a significant
>amount of bandwidth.
>
>See
>http://a257.g.akamaitech.net/7/257/2422/09nov20051500/edocket.access.gpo.gov/cfr_2005/octqtr/47cfr22.925.htm
>
>Dave Morris
>
>
>
>
Message 21
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--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Dave Morris "BigD" wrote:
> --> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
>
> Unless I'm mistaken, I believe it is still against FCC regulations
> (47CFR 22.925) to operate a cellular phone onboard an aircraft that
> is in the air. This is because the signal will be picked up by
> multiple cell towers at the same time and will lock out a significant
> amount of bandwidth.
That is indeed the case for AMPS phones (the old analog cell-phone
technology). The newer digital PCS phones operate under a different set
of rules. These phones, CDMA, TDMA, GSM, etc., may be used in-flight.
There are no FCC limitations on that. The FAA limitation (part 91
operations) is that the pilot must determine that the operation of the
phone does not present a hazard to aircraft operation or navigation.
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 22
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--> AeroElectric-List message posted by: "Wayne Reese" <webfootboat@comcast.net>
It is a good way to close your flight plan while taxing to parking however.
Wayne
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Dave
Morris "BigD"
Sent: Wednesday, March 29, 2006 6:36 PM
Subject: Re: AeroElectric-List: Cell phone
--> AeroElectric-List message posted by: "Dave Morris \"BigD\""
<BigD@DaveMorris.com>
Unless I'm mistaken, I believe it is still against FCC regulations
(47CFR 22.925) to operate a cellular phone onboard an aircraft that
is in the air. This is because the signal will be picked up by
multiple cell towers at the same time and will lock out a significant
amount of bandwidth.
See
http://a257.g.akamaitech.net/7/257/2422/09nov20051500/edocket.access.gpo.gov
/cfr_2005/octqtr/47cfr22.925.htm
Dave Morris
At 05:35 AM 3/29/2006, you wrote:
>--> AeroElectric-List message posted by: Jack Kuehn
><jkuehn@mountaintime.myrf.net>
>
>I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
>am trying to find a way to connect a cell phone into the intercom. I
>tried using an earphone jack plugged into the record output and music
>input, but this did not work. Does anyone have a solution, or does
>anyone know why this does not work? Thanks
>
>Jack
>
>
Message 23
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--> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
Yes of course, did anyone suggest using cell phones in the air? It's
for those last minute calls to Flight Service, family, and for off
airport communication while waiting in line for departure. It is for
that reason I can't justify spending $300 for a cell phone patch.
Jack
Dave Morris "BigD" wrote:
>--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
>
>Unless I'm mistaken, I believe it is still against FCC regulations
>(47CFR 22.925) to operate a cellular phone onboard an aircraft that
>is in the air. This is because the signal will be picked up by
>multiple cell towers at the same time and will lock out a significant
>amount of bandwidth.
>
>See
>http://a257.g.akamaitech.net/7/257/2422/09nov20051500/edocket.access.gpo.gov/cfr_2005/octqtr/47cfr22.925.htm
>
>Dave Morris
>
>
>At 05:35 AM 3/29/2006, you wrote:
>
>
>>--> AeroElectric-List message posted by: Jack Kuehn
>><jkuehn@mountaintime.myrf.net>
>>
>>I have a homebuilt Sky Ranger airplane with a Softcomm intercom, and I
>>am trying to find a way to connect a cell phone into the intercom. I
>>tried using an earphone jack plugged into the record output and music
>>input, but this did not work. Does anyone have a solution, or does
>>anyone know why this does not work? Thanks
>>
>>Jack
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
>
>
>
--
Jack Kuehn
5565 Brady Lane
Lolo, MT 59847
(406) 273-6801
(406) 546-1086 (cell)
(406) 273-2563 (fax)
Message 24
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| Subject: | legal Cell phone |
--> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
That is interesting, and I bet not too many pilots know this. Why then
are the airlines still telling us to turn our digital cell phones off?
Do the pilots, as a matter of company policy, "decide" they are not
"safe?"
Brian Lloyd wrote:
>--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
>
>
>Dave Morris "BigD" wrote:
>
>
>>--> AeroElectric-List message posted by: "Dave Morris \"BigD\"" <BigD@DaveMorris.com>
>>
>>Unless I'm mistaken, I believe it is still against FCC regulations
>>(47CFR 22.925) to operate a cellular phone onboard an aircraft that
>>is in the air. This is because the signal will be picked up by
>>multiple cell towers at the same time and will lock out a significant
>>amount of bandwidth.
>>
>>
>
>That is indeed the case for AMPS phones (the old analog cell-phone
>technology). The newer digital PCS phones operate under a different set
>of rules. These phones, CDMA, TDMA, GSM, etc., may be used in-flight.
>There are no FCC limitations on that. The FAA limitation (part 91
>operations) is that the pilot must determine that the operation of the
>phone does not present a hazard to aircraft operation or navigation.
>
>
>
--
Jack Kuehn
5565 Brady Lane
Lolo, MT 59847
(406) 273-6801
(406) 546-1086 (cell)
(406) 273-2563 (fax)
Message 25
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| Subject: | very sensitive current monitor? |
--> AeroElectric-List message posted by: D Wysong <hdwysong@gmail.com>
Has anyone here come across an affordable (< $50) current monitor
(preferably hall effect) with a max range of ~1 A? I'm looking for
something that is usable with scaling of mV/mA rather than mV/A.
The form factor of those little ampsense units is perfect... but the
sensitivity offered by their smallest unit (25A) just isn't sensitive
enough.
Thanks for any guidance you can offer!
D
Message 26
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--> AeroElectric-List message posted by: Jim Corner <jcorner@shaw.ca>
Now that we have established the need for a cheap solution to this
problem I offer the following
$10-$20 solution,
Purchase a hands free earphone-mic with the flex connection between
ear and mike elements.
Place both elements (ear and mike) in the ear cup of your head set,
ANR probably works best.
I sometimes place the ear element in my ear under the headset, seems
to work a little better.
Talk to your cell phone party over the intercom. The drawback is
that your cell phone party
will hear your take-off clearance and refuse to talk to you any more.
Try it ---- you'll like it!
Jim
On Mar 29, 2006, at 7:13 PM, Jack Kuehn wrote:
> --> AeroElectric-List message posted by: Jack Kuehn
> <jkuehn@mountaintime.myrf.net>
>
> Yes of course, did anyone suggest using cell phones in the air? It's
> for those last minute calls to Flight Service, family, and for off
> airport communication while waiting in line for departure. It is for
> that reason I can't justify spending $300 for a cell phone patch.
>
> Jack
>
> Dave Morris "BigD" wrote:
>
>> --> AeroElectric-List message posted by: "Dave Morris \"BigD\""
>> <BigD@DaveMorris.com>
>>
>> Unless I'm mistaken, I believe it is still against FCC regulations
>> (47CFR 22.925) to operate a cellular phone onboard an aircraft that
>> is in the air. This is because the signal will be picked up by
>> multiple cell towers at the same time and will lock out a significant
>> amount of bandwidth.
>>
>> See
>> http://a257.g.akamaitech.net/7/257/2422/09nov20051500/
>> edocket.access.gpo.gov/cfr_2005/octqtr/47cfr22.925.htm
>>
>> Dave Morris
>>
>>
>> At 05:35 AM 3/29/2006, you wrote:
>>
>>
>>> --> AeroElectric-List message posted by: Jack Kuehn
>>> <jkuehn@mountaintime.myrf.net>
>>>
>>> I have a homebuilt Sky Ranger airplane with a Softcomm intercom,
>>> and I
>>> am trying to find a way to connect a cell phone into the
>>> intercom. I
>>> tried using an earphone jack plugged into the record output and
>>> music
>>> input, but this did not work. Does anyone have a solution, or does
>>> anyone know why this does not work? Thanks
>>>
>>> Jack
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
> --
> Jack Kuehn
> 5565 Brady Lane
> Lolo, MT 59847
>
> (406) 273-6801
> (406) 546-1086 (cell)
> (406) 273-2563 (fax)
>
>
Message 27
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--> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
WOW I am speechless at the simplicity of this!! Thank you!! I'll try
it ASAP!
Jack
Jim Corner wrote:
>--> AeroElectric-List message posted by: Jim Corner <jcorner@shaw.ca>
>
>Now that we have established the need for a cheap solution to this
>problem I offer the following
>
>$10-$20 solution,
>
>Purchase a hands free earphone-mic with the flex connection between
>ear and mike elements.
>
>Place both elements (ear and mike) in the ear cup of your head set,
>ANR probably works best.
>
>I sometimes place the ear element in my ear under the headset, seems
>to work a little better.
>
>Talk to your cell phone party over the intercom. The drawback is
>that your cell phone party
>
>will hear your take-off clearance and refuse to talk to you any more.
>
>Try it ---- you'll like it!
>
>Jim
>
>
>On Mar 29, 2006, at 7:13 PM, Jack Kuehn wrote:
>
>
>
>>--> AeroElectric-List message posted by: Jack Kuehn
>><jkuehn@mountaintime.myrf.net>
>>
>>Yes of course, did anyone suggest using cell phones in the air? It's
>>for those last minute calls to Flight Service, family, and for off
>>airport communication while waiting in line for departure. It is for
>>that reason I can't justify spending $300 for a cell phone patch.
>>
>>Jack
>>
>>Dave Morris "BigD" wrote:
>>
>>
>>
>>>--> AeroElectric-List message posted by: "Dave Morris \"BigD\""
>>><BigD@DaveMorris.com>
>>>
>>>Unless I'm mistaken, I believe it is still against FCC regulations
>>>(47CFR 22.925) to operate a cellular phone onboard an aircraft that
>>>is in the air. This is because the signal will be picked up by
>>>multiple cell towers at the same time and will lock out a significant
>>>amount of bandwidth.
>>>
>>>See
>>>http://a257.g.akamaitech.net/7/257/2422/09nov20051500/
>>>edocket.access.gpo.gov/cfr_2005/octqtr/47cfr22.925.htm
>>>
>>>Dave Morris
>>>
>>>
>>>At 05:35 AM 3/29/2006, you wrote:
>>>
>>>
>>>
>>>
>>>>--> AeroElectric-List message posted by: Jack Kuehn
>>>><jkuehn@mountaintime.myrf.net>
>>>>
>>>>I have a homebuilt Sky Ranger airplane with a Softcomm intercom,
>>>>and I
>>>>am trying to find a way to connect a cell phone into the
>>>>intercom. I
>>>>tried using an earphone jack plugged into the record output and
>>>>music
>>>>input, but this did not work. Does anyone have a solution, or does
>>>>anyone know why this does not work? Thanks
>>>>
>>>>Jack
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>--
>>Jack Kuehn
>>5565 Brady Lane
>>Lolo, MT 59847
>>
>>(406) 273-6801
>>(406) 546-1086 (cell)
>>(406) 273-2563 (fax)
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
>
>
>
--
Jack Kuehn
5565 Brady Lane
Lolo, MT 59847
(406) 273-6801
(406) 546-1086 (cell)
(406) 273-2563 (fax)
Message 28
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| Subject: | Re: legal Cell phone |
--> AeroElectric-List message posted by: Brian Lloyd <brian-yak@lloyd.com>
Jack Kuehn wrote:
> --> AeroElectric-List message posted by: Jack Kuehn <jkuehn@mountaintime.myrf.net>
>
> That is interesting, and I bet not too many pilots know this. Why then
> are the airlines still telling us to turn our digital cell phones off?
> Do the pilots, as a matter of company policy, "decide" they are not
> "safe?"
Correct. The rules for part 121 and 135 ops are different than they are
for part 91. The pilots have no discretion in that case.
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
Message 29
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--> AeroElectric-List message posted by: "Allan Aaron" <aaaron@tvp.com.au>
I have a GRT EIS4000 and want to add the ammeter function. I forgot to
buy the sensor from GRT but I do have a spare hall effect sensor from
the previous Rocky Mountains EIS I was using. I'm wondering what the
voltage (I assume) output of these devices is? The RkyMtns one has three
input wires - is anyone familiar with these and how I might connect the
sensor to read volts into the GRT?
I've emailed GRT a couple of times but got no reply - I guess its
understandable that they want to sell me the $60 sensor rather than have
me use the one I have.
Thanks for your suggestions.
Allan
Message 30
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--> AeroElectric-List message posted by: Tim Olson <Tim@MyRV10.com>
Wayne,
I had the same issue until I found the cable. PS-Eng sells them but
for a super high price. I bought this one, from here, and it works
great.
http://www.midi-classics.com/c/c23895.htm
Maker: Hosa Technology
Code: CMM-403
That should be some help for you....they're really cheap.
To use this one, you will need to buy a 2.5mm jack for the input.
If you wired a 3.5mm jack, you'll need a 2.5mm to 3.5mm male cable,
which I haven't shopped for.
Tim Olson - RV-10 N104CD - Flying
PS, that PS8000 is one hot intercom. I can't believe how
great it functions in many ways!
Wayne Reese wrote:
> --> AeroElectric-List message posted by: "Wayne Reese" <webfootboat@comcast.net>
>
> Excuse me for jumping in here. I have a ps8000sr that includes a cell phone
> connection which I have not been able to try simply because it requires a
> cord with a 2.5 mm connection of each end (stereo I believe) and I have not
> been able to find a cable anywhere. Any suggestions?
> Wayne
>
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