Today's Message Index:
----------------------
1. 05:11 AM - Re: Transponder (Doug Ilg)
2. 05:20 AM - Transponder ()
3. 06:01 AM - Re: Transponder (John Cammarano)
4. 06:01 AM - Re: Transponder (John Cammarano)
5. 06:37 AM - Re: Transponder (Robert Borger)
6. 06:40 AM - Re: AeroElectric-List Digest: 11 Msgs - 03/20/12 (James Meade)
7. 11:52 AM - Re: ELT Antenna (Noel Loveys)
8. 11:59 AM - Re: ELT Antenna (Noel Loveys)
9. 01:14 PM - Re: Re: wingtip vor antenna (Mark Harris)
10. 01:57 PM - Annunciator lights (Tim Andres)
11. 02:35 PM - Re: Annunciator lights (ROGER & JEAN CURTIS)
12. 02:35 PM - Re: wingtip vor antenna - SWR Meter (Jeff Luckey)
13. 03:21 PM - Re: Annunciator lights (rparigor@suffolk.lib.ny.us)
14. 03:45 PM - Re: Re: wingtip vor antenna - SWR Meter (Noel Loveys)
15. 03:57 PM - Re: ELT Antenna (Kelly McMullen)
16. 05:09 PM - Re: Re: wingtip vor antenna - SWR Meter (Robert L. Nuckolls, III)
17. 05:14 PM - Re: Source for Bakelite - 1/32" thick (Don)
18. 05:49 PM - Re: Annunciator lights (Robert L. Nuckolls, III)
19. 06:14 PM - Re: Annunciator lights (Tim Andres)
Message 1
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If you don't like or can't use the info you get here, try asking that quest
ion on a ballooning forum.- I have seen things like that cobbled together
for balloons (try to find a balloon with an electrical system! :-).- I t
hink you're in a "roll your own" situation, here.- As I recall, they were
just normal panel mount transponders and encoders with smallish 12V SLA ba
tteries in makeshift boxes - no real magic.=0A=0A=0AI can't remember whethe
r the ones I've seen were in hot air or gas balloons, so you might want to
target both kinds in your search.=0A=0AGood luck!=0A=0A-=0ADoug Ilg=0AGru
mman Tiger N74818, College Park-Airport (KCGS), Maryland=0AChallenger II
LSS LW (N641LG-reserved)-- kit underway at Laurel Suburban (W18)=0A=0A
-=0A=0A=0A=0A>________________________________=0A> From: John Cammarano <
jcappraiser@sbcglobal.net>=0A>To: aeroelectric-list@matronics.com =0A>Sent:
Tuesday, March 20, 2012 11:51 PM=0A>Subject: AeroElectric-List: Transponde
r=0A> =0A>=0A>Can anyone tell me if there is such a thing as a =0A"Portable
transponder". I have a small antique airplane with no electrical =0Asystem
& would often like to have a transponder but I don't really want to =0Aadd
a small battery. I don't mind adding the small transponder type antenna. I
=0Aam trying to find out if there is a transponder out there powered by it
's own =0Arechargeable batteries - like a handheld comm radio or a portable
GPS. Any info =0Ahere would be very much appreciated. Thanks. =0AJohnny=0A
>
Message 2
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3/21/2012
Hello John, See this web site:
http://www.kinetic.co.uk/last.php
Note that a true portable transponder for use in the U. S may be a real
tough problem to solve because of the TSO requirements. Also note the
requirements of 14 CFR 91.413.
The sailplane people work in this arena -- just google transponder for
sailplanes. Here is one source:
http://www.soaringsafety.org/prevention/Guide-to-transponders-in-sailplanes-2010B.pdf
'OC' Baker Says: "The best investment we can make is the time and effort to
gather and understand knowledge."
==============================================================
From: "John Cammarano" <jcappraiser@sbcglobal.net>
Subject: AeroElectric-List: Transponder
Can anyone tell me if there is such a thing as a "Portable transponder".
I have a small antique airplane with no electrical system & would often
like to have a transponder but I don't really want to add a small
battery. I don't mind adding the small transponder type antenna. I am
trying to find out if there is a transponder out there powered by it's
own rechargeable batteries - like a handheld comm radio or a portable
GPS. Any info here would be very much appreciated. Thanks. Johnny
Message 3
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Thanks Doug.
Johnny
From: Doug Ilg
Sent: Wednesday, March 21, 2012 5:09 AM
Subject: Re: AeroElectric-List: Transponder
If you don't like or can't use the info you get here, try asking that
question on a ballooning forum. I have seen things like that cobbled
together for balloons (try to find a balloon with an electrical system!
:-). I think you're in a "roll your own" situation, here. As I recall,
they were just normal panel mount transponders and encoders with
smallish 12V SLA batteries in makeshift boxes - no real magic.
I can't remember whether the ones I've seen were in hot air or gas
balloons, so you might want to target both kinds in your search.
Good luck!
Doug Ilg
Grumman Tiger N74818, College Park Airport (KCGS), Maryland
Challenger II LSS LW (N641LG reserved) - kit underway at Laurel Suburban
(W18)
-------------------------------------------------------------------------
-----
From: John Cammarano <jcappraiser@sbcglobal.net>
To: aeroelectric-list@matronics.com
Sent: Tuesday, March 20, 2012 11:51 PM
Subject: AeroElectric-List: Transponder
Can anyone tell me if there is such a thing as a "Portable
transponder". I have a small antique airplane with no electrical system
& would often like to have a transponder but I don't really want to add
a small battery. I don't mind adding the small transponder type antenna.
I am trying to find out if there is a transponder out there powered by
it's own rechargeable batteries - like a handheld comm radio or a
portable GPS. Any info here would be very much appreciated. Thanks.
Johnny
Message 4
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Thanks!! - great info.
Johnny
--------------------------------------------------
From: <bakerocb@cox.net>
Sent: Wednesday, March 21, 2012 5:20 AM
Subject: AeroElectric-List: Transponder
>
> 3/21/2012
>
> Hello John, See this web site:
>
> http://www.kinetic.co.uk/last.php
>
> Note that a true portable transponder for use in the U. S may be a real
> tough problem to solve because of the TSO requirements. Also note the
> requirements of 14 CFR 91.413.
>
> The sailplane people work in this arena -- just google transponder for
> sailplanes. Here is one source:
>
> http://www.soaringsafety.org/prevention/Guide-to-transponders-in-sailplanes-2010B.pdf
>
>
> 'OC' Baker Says: "The best investment we can make is the time and effort
> to gather and understand knowledge."
>
> ==============================================================
>
> From: "John Cammarano" <jcappraiser@sbcglobal.net>
> Subject: AeroElectric-List: Transponder
>
> Can anyone tell me if there is such a thing as a "Portable transponder".
> I have a small antique airplane with no electrical system & would often
> like to have a transponder but I don't really want to add a small
> battery. I don't mind adding the small transponder type antenna. I am
> trying to find out if there is a transponder out there powered by it's
> own rechargeable batteries - like a handheld comm radio or a portable
> GPS. Any info here would be very much appreciated. Thanks. Johnny
>
>
>
Message 5
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Hi John,
Look at Microair. I know they have packages specifically for sailplane operations.
Probably Becker, Garrecht and Trig as well.
Becker and Microair being the lightest.
Unfortunately, none of these are inexpensive. But then, I don't know of any inexpensive
transponder.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Mar 21, 2012, at 8:00 AM, John Cammarano wrote:
Thanks!! - great info.
Johnny
--------------------------------------------------
From: <bakerocb@cox.net>
Sent: Wednesday, March 21, 2012 5:20 AM
Subject: AeroElectric-List: Transponder
>
> 3/21/2012
>
> Hello John, See this web site:
>
> http://www.kinetic.co.uk/last.php
>
> Note that a true portable transponder for use in the U. S may be a real tough
problem to solve because of the TSO requirements. Also note the requirements
of 14 CFR 91.413.
>
> The sailplane people work in this arena -- just google transponder for sailplanes.
Here is one source:
>
> http://www.soaringsafety.org/prevention/Guide-to-transponders-in-sailplanes-2010B.pdf
>
>
> 'OC' Baker Says: "The best investment we can make is the time and effort to gather
and understand knowledge."
Message 6
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| Subject: | Re: AeroElectric-List Digest: 11 Msgs - 03/20/12 |
Portable transponder
http://www.lxavionics.co.uk/portables.htm
Message 7
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THE INSTRUCTIONS CALL FOR A 22"LENGTH AND THAT IS GOOD FOR THE OLD 121MhZ
ELT. The new ETL operate close to 400 mHz therefore should have a length
just over 7". I'm sure Bob can give us the practical length.
Noel
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of
Rasmussen, Robert CAPT USFF, N3 OTRC
Sent: March 20, 2012 7:05 PM
Subject: AeroElectric-List: ELT Antenna
Greetings All,
Two questions:
1. Any problem crafting my own ELT antenna for install in an RV8 tail
fairing, per
http://www.aeroelectric.com/articles/Antennas/DIY_Comm_Ant/DIY_Comm.html
instructions?
2. What is EMACS!
Thanks,
Raz
Message 8
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It sure would be... but for amateur aircraft you might be able to use your
own antenna.
Noel
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Ed
Holyoke
Sent: March 20, 2012 10:18 PM
Subject: Re: AeroElectric-List: ELT Antenna
Have to look at your ELT installation instructions. The ELT is TSOed and
might require that you use their antenna.
Ed Holyoke
On 3/20/2012 2:35 PM, Rasmussen, Robert CAPT USFF, N3 OTRC wrote:
Greetings All,
Two questions:
1. Any problem crafting my own ELT antenna for install in an RV8 tail
fairing, per
http://www.aeroelectric.com/articles/Antennas/DIY_Comm_Ant/DIY_Comm.html
instructions?
2. What is EMACS!
Thanks,
Raz
Message 9
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| Subject: | Re: wingtip vor antenna |
Bob
I can probably loan a swr meter
Mark
Rent our beautiful 3 bedroom luxury villa in Orlando, Florida.
View our virtual tour but book direct with us. See the link below:-
http://www.florida1strentals.com/property.php?id=21
Contact Emma and Mark Harris 01582 529820
harrisfloridavilla@hotmail.com
On 21 Mar 2012, at 01:50, "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
wrote:
>
> At 02:18 PM 3/20/2012, you wrote:
>>
>> Cheers Bob
>>
>> Looks like a job for the weekend
>
> Do you have access to an antenna analyzer or
> at least an SWR meter?
>
>
> Bob . . .
>
>
>
>
>
Message 10
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| Subject: | Annunciator lights |
Hey gang!
I built an annunciator panel using these LED's:
http://tinyurl.com/85r8duf
Now that Im flying I find they are failing almost weekly. I need to
replace them or fix the problem. They incorporate an integral resistor
and are rated at 12V. I'm looking for a more durable replacement, maybe
something that could be retrofitted into the existing lens as the led
and resistor will slide out the back side.
Any ideas welcome!
Thanks, Tim
Message 11
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| Subject: | Annunciator lights |
I built an annunciator panel using these LED's:
http://tinyurl.com/85r8duf
Now that Im flying I find they are failing almost weekly. I need to
replace them or fix the problem.
You have LEDs rated for 3-12V and you are running them at
14+ volts. The current flow is too high with this higher voltage and this
is most likely why they are failing. If you really like these indicators,
you could put in series resistors, or put in lights with a higher voltage
rating.
Roger
Message 12
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| Subject: | Re: wingtip vor antenna - SWR Meter |
Can this radio shack be used for aviation comm radios?
http://www.radioshack.com/product/index.jsp?productId 36239
(at < $40, the price is sure right)
IIRC, CB's are around 27 Mhz & airplane radios operate 118-136 Mhz. Is that
a problem?
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Mark
Harris
Sent: Wednesday, March 21, 2012 12:11
Subject: Re: AeroElectric-List: Re: wingtip vor antenna
<harrismarkr@hotmail.com>
Bob
I can probably loan a swr meter
Mark
Rent our beautiful 3 bedroom luxury villa in Orlando, Florida.
View our virtual tour but book direct with us. See the link below:-
http://www.florida1strentals.com/property.php?id=21
Contact Emma and Mark Harris 01582 529820
harrisfloridavilla@hotmail.com
On 21 Mar 2012, at 01:50, "Robert L. Nuckolls, III"
<nuckolls.bob@aeroelectric.com> wrote:
<nuckolls.bob@aeroelectric.com>
>
> At 02:18 PM 3/20/2012, you wrote:
<harrismarkr@hotmail.com>
>>
>> Cheers Bob
>>
>> Looks like a job for the weekend
>
> Do you have access to an antenna analyzer or
> at least an SWR meter?
>
>
> Bob . . .
>
>
>
>
>
Message 13
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| Subject: | Annunciator lights |
I incorporated a number of Pep Boys LEDs in my panel. The reason I like
them is they are slightly longer than a normal LED of that diameter. They
are sold LEDs that can be used with 12 volts. The resistors they are
using are too small, way too fragile, they didn't clean them before
soldering, they did a very poor job soldering and the wire they use just
doesn't solder that well. Net is I had several fail on the bench,
some the solder joint failed, some the solder joint was high resistance
and some the resistor broke. I still like the LEDs, so I just put my own
resistor and wires on them and all is well. You can have a look at
Hosfelt electronics for LEDs, or www.besthongkong.com if you want to buy
a lot of stuff. You don't have to put the resistor inside your
annunciator, it can go anywhere along the circuit. Doing the trick where
you take a resistor with a leg to the left and a leg to the right, now
you take a wire coming from the right, pass the resistor and solder to
the left leg, then take a wire coming from the left, pass the resistor
and connect it to the right and cover with a piece of heat shrink works
very nice.
I don't have any pics with clear shrink tubing, but here's a
diode in
series:http://www.europaowners.org/main.php?g2_itemId=82005&g2_imageViewsIndex=1
Here's a resistor in series:
http://www.europaowners.org/main.php?g2_itemId=82008&g2_imageViewsIndex=1
Ron Parigoris
Message 14
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| Subject: | Re: wingtip vor antenna - SWR Meter |
Yes, it is a problem the diodes in this meter are not nearly fast enough to
break the RF (Radio Frequency) of VHF into digital segments needed to
measure SWR. This unit is usable for frequencies 30 mHz and below.
You may find a serviceable meter on eBay. If you buy a Bird Wattmeter make
sure the element for 100-250 mHz comes with it.
Noel
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jeff
Luckey
Sent: March 21, 2012 8:04 PM
Subject: AeroElectric-List: Re: wingtip vor antenna - SWR Meter
--> <JLuckey@pacbell.net>
Can this radio shack be used for aviation comm radios?
http://www.radioshack.com/product/index.jsp?productId 36239
(at < $40, the price is sure right)
IIRC, CB's are around 27 Mhz & airplane radios operate 118-136 Mhz. Is that
a problem?
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Mark
Harris
Sent: Wednesday, March 21, 2012 12:11
Subject: Re: AeroElectric-List: Re: wingtip vor antenna
<harrismarkr@hotmail.com>
Bob
I can probably loan a swr meter
Mark
Rent our beautiful 3 bedroom luxury villa in Orlando, Florida.
View our virtual tour but book direct with us. See the link below:-
http://www.florida1strentals.com/property.php?id=21
Contact Emma and Mark Harris 01582 529820 harrisfloridavilla@hotmail.com
On 21 Mar 2012, at 01:50, "Robert L. Nuckolls, III"
<nuckolls.bob@aeroelectric.com> wrote:
<nuckolls.bob@aeroelectric.com>
>
> At 02:18 PM 3/20/2012, you wrote:
<harrismarkr@hotmail.com>
>>
>> Cheers Bob
>>
>> Looks like a job for the weekend
>
> Do you have access to an antenna analyzer or at least an SWR meter?
>
>
> Bob . . .
>
>
>
>
>
Message 15
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The minimum for use of ELTs is to demonstrate that the complete system
meets the TSO. Good luck with doing that with a roll your own antenna of
unknown impedance and SWR. ELTs and transponders are two items on OBAM
aircraft that must comply with the TSO.
Noel wrote:
It sure would be... but for amateur aircraft you might be able to use your
own antenna.
Noel
*From:* owner-aeroelectric-list-server@matronics.com [mailto:
owner-aeroelectric-list-server@matronics.com] *On Behalf Of *Ed Holyoke
*Sent:* March 20, 2012 10:18 PM
*To:* aeroelectric-list@matronics.com
*Subject:* Re: AeroElectric-List: ELT Antenna
Have to look at your ELT installation instructions. The ELT is TSOed and
might require that you use their antenna.
Message 16
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| Subject: | Re: wingtip vor antenna - SWR Meter |
At 05:42 PM 3/21/2012, you wrote:
>
>Yes, it is a problem the diodes in this meter are not nearly fast enough to
>break the RF (Radio Frequency) of VHF into digital segments needed to
>measure SWR. This unit is usable for frequencies 30 mHz and below.
>You may find a serviceable meter on eBay. If you buy a Bird Wattmeter make
>sure the element for 100-250 mHz comes with it.
The Bird products are the gold standard for
RF wattmeters. A few months ago we had some
discussion on the List about the HF SWR
meters common to CB radio frequencies and
below. These are not suited to VHF as their
sampled transmission line is too long with
respect to a wavelength at the frequencies
of interest for VHF. They tend to give 'good'
readings to poor antennas.
We also had some discussions about this device:
Emacs!
Which you can get off eBay for about $60 postage paid.
http://tinyurl.com/7cl4bba
I purchased one of these and found it a quite good
value. Reasonably accurate for power readings down
into the 100 milliwatt range.
The one I have here on my bench is spoken for and
will be out of here next week . . . but the folks
offering it on eBay have plenty more. Be sure to
get two N-Male/BNC-Female adapters.
Emacs!
http://tinyurl.com/6m7ujmw
These are about $2.50 each postage paid.
Bob . . .
Message 17
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| Subject: | Source for Bakelite - 1/32" thick |
Package is on the way via Fedex. Open from the bottom marked open this
side.
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: Sunday, March 18, 2012 8:23 AM
Subject: RE: AeroElectric-List: Source for Bakelite - 1/32" thick
<nuckolls.bob@aeroelectric.com>
At 11:09 PM 3/17/2012, you wrote:
>
>Bob,
>I have one that has the wrong cap on it. I talked to Bob Archer and he told
>me thet the cap belongs on one of his dipole ant rather than on the
>monopole that it is installed on. He sent me a replacement cap that I have
>not installed yet. I can ship the entire thing to you for the experiment.
>You will also notice that the "Bakelite is different on each cap" Send me
an
>address via the email address that shows with my name.
Interesting! You can send the stuff to me at
P.O. Box 130, Medicine Lodge, KS 67104-0130
or if you need to go UPS, then 209 Curry Lane
Bob . . .
Message 18
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| Subject: | Re: Annunciator lights |
At 03:55 PM 3/21/2012, you wrote:
>
>Hey gang!
>I built an annunciator panel using these LED's:
>http://tinyurl.com/85r8duf
>
>Now that Im flying I find they are failing almost weekly. I need to
>replace them or fix the problem. They incorporate an integral
>resistor and are rated at 12V. I'm looking for a more durable
>replacement, maybe something that could be retrofitted into the
>existing lens as the led and resistor will slide out the back side.
What colors are you needing? Can you send me one
of these fixtures . . . or at least take some good
pix of the disassembled hardware as supplied.
LEDs are not generally very fragile. Are you sure it's
the LED that's failing and not the resistor? Some years
ago we had some discussion about LED fragility and life
vs. intensity here on the List. I took issue with a few
readers who cited 'not to exceed' ratings for LEDs lest
they depart for the happy glowing ground.
I took a 10mm LED rated at 30 mA and wired it to a wall-wart
biased up at about 4x that rating. I plugged it into an
outlet in my garage and left it. You could see rather
well in a darkened garage from the emitted light.
Over a year later, I took it off the wall still illuminated.
I didn't measure it's light output to see if it degraded
but it certainly didn't go into gross failure.
For use in annunciators where the lights are OFF most
of the time, it might be a good idea to over-drive the
LEDs in the interest of sun-light viewable performance.
There are some honk'n LEDs available. I bought some 10mm
reds and greens from this guy for a courtroom, table-top
demonstrator . . .
http://tinyurl.com/7jlgymk
Very adequate for getting one's attention in a well lit
courtroom. This seller
http://tinyurl.com/7n75xu2
has some killer whites rated at 1W. These might do
what you want depending on the ability of your caps
to set the color when illuminated with white led.
This much power in an LED probably calls for some
heat-sinking . . . but you may find that you can
run them a lot cooler and still get the necessary
light.
Bob . . .
Message 19
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| Subject: | Re: Annunciator lights |
On 3/21/2012 5:46 PM, Robert L. Nuckolls, III wrote:
> At 03:55 PM 3/21/2012, you wrote:
>> <tim2542@sbcglobal.net>
>>
>> Hey gang!
>> I built an annunciator panel using these LED's:
>> http://tinyurl.com/85r8duf
>>
>> Now that Im flying I find they are failing almost weekly. I need to
>> replace them or fix the problem. They incorporate an integral
>> resistor and are rated at 12V. I'm looking for a more durable
>> replacement, maybe something that could be retrofitted into the
>> existing lens as the led and resistor will slide out the back side.
>
> What colors are you needing? Can you send me one
> of these fixtures . . . or at least take some good
> pix of the disassembled hardware as supplied.
Thanks Bob! I'll have to check if its the resistors that failed next
time I get to the hangar but I noticed some of the on-line LED/resistor
calculators call for a 1/2 w resistor and the ones installed in the
fixtures look like 1/8w. I'll report back but have already bought new
LEDs to fix them with and in fact found some blinking ones to boot that
I'll use on my OP light.
Thanks, Tim
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