Today's Message Index:
----------------------
1. 01:36 AM - Using the OVM as a trigger for a hard disconnect of the B lead (Bob Verwey)
2. 03:12 AM - Re: Bob's living in the future! (James Kilford)
3. 04:38 AM - Hanger Antenna (Mark Banus)
4. 05:43 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
5. 05:44 AM - Re: Using the OVM as a trigger for a hard disconnect of the B lead (Robert L. Nuckolls, III)
6. 05:56 AM - Re: Using the OVM as a trigger for a hard disconnect of the B lead (Bob Verwey)
7. 06:18 AM - Re: Hanger Antenna (Christopher Cee Stone)
8. 06:30 AM - Re: Hanger Antenna (Jay Hyde)
9. 07:54 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
10. 08:02 AM - Re: Hanger Antenna (Bill Putney)
11. 11:27 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
12. 11:34 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
Message 1
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Subject: | Using the OVM as a trigger for a hard disconnect of |
the B lead
Listers,
With the internally regulated alternator scenario, in the event of a
voltage spike or alternator runaway, what to do?
What about a master type relay on the B lead that is disconnected by the
OVM?
Not a very clean solution, but is it doable?
Best...
Bob Verwey
Message 2
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Subject: | Re: Bob's living in the future! |
Note how he doesn't actually deny the existence of the time machine... but
deftly side-steps the issue!
I'm keeping my eye on the Aeroelectric store, just in case the TM-1
appears...
On 13 June 2013 02:02, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> nuckolls.bob@aeroelectric.com**>
>
>
> At 05:43 PM 6/12/2013, you wrote:
>
>>
>> Hey Bob,
>>
>> I notice your emails are arriving a day in the future... have you
>> mastered the time machine, or is your computer confused about the date? :-)
>>
>
> Thanks! I'm putting 90% done and 90% to go on setting
> up a new computer. My ol' P4 machine was getting long
> in the tooth . . . nearly 10 years old. I'm planing some
> video production and thought it would be nice to have
> a bit more byte-thrashing snort. Picked up a dual-core,
> 3.2G machine with lots of RAM for $150 delivered to my
> door (aint eBay wunderful?). Put a dual screen video card
> in it and I'm really enjoying the up-tick in responsiveness.
>
> Now I'm finding out how 'nice to have' bits of software
> still need to be chased down and installed. Got the
> date fixed! As Eric noted a few days ago, the advances
> in video hardware are amazing. The stuff I've acquired
> new to my desk is a generation or more old and STILL
> of astounding value and capability . . . and dirt cheap.
>
>
> Bob . . .
>
>
Message 3
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Bob,
I was wondering if there is an antenna type that I can install on the
exterior of my hanger and wire it into the hanger that will provide signal
to my FM music radio TV, and VHF handheld. I presently have antennas for
each internally mounted inside the hanger. They work fine until I close the
hanger door. If the outside hanger antenna had a "repeater" inside I think
it would work. Is there such a device? I want to minimize the number of
holes I put in the hanger wall.
TNX
Mark Banus
Message 4
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Subject: | Re: Hanger Antenna |
At 06:38 AM 6/13/2013, you wrote:
>Bob,
>I was wondering if there is an antenna type that I can install on
>the exterior of my hanger and wire it into the hanger that will
>provide signal to my FM music radio TV, and VHF handheld. I
>presently have antennas for each internally mounted inside the
>hanger. They work fine until I close the hanger door. If the
>outside hanger antenna had a "repeater" inside I think it would
>work. Is there such a device? I want to minimize the number of
>holes I put in the hanger wall.
>TNX
>Mark Banus
I presume you're willing to use only one service
at a time. I.e. you don't need to watch tv and
listen to the hand-held at the same time.
There are some effective, broadband antennas most
notable of which is called the 'discone'. One
example is offered here
http://tinyurl.com/54fk
You can build these things pretty easily. It just
depends on how much your time is worth. If you're
inclined to hammer one out yourself, consider
http://tinyurl.com/kc9ruge
The discone is not an efficient antenna but it's
performance over a broad range of frequencies is
the selling point. If your TV/FM/VHF signals are
not 'fringe' levels, the discone is a good option.
Bob . . .
Message 5
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Subject: | Re: Using the OVM as a trigger for a hard disconnect |
of the B lead
At 03:35 AM 6/13/2013, you wrote:
>Listers,
>
>With the internally regulated alternator scenario, in the event of a
>voltage spike or alternator runaway, what to do?
>What about a master type relay on the B lead that is disconnected by the OVM?
>
>Not a very clean solution, but is it doable?
See figure Z-24 in the book.
Bob . . .
Message 6
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Subject: | Re: Using the OVM as a trigger for a hard disconnect |
of the B lead
Thanks Bob,
I was reminded by Jay Hyde that you have covered this......as usual, one
does not pay much attention until it's in your face!
Best
Bob Verwey
On 13 June 2013 14:44, Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> nuckolls.bob@aeroelectric.com**>
>
> At 03:35 AM 6/13/2013, you wrote:
>
>> Listers,
>>
>> With the internally regulated alternator scenario, in the event of a
>> voltage spike or alternator runaway, what to do?
>> What about a master type relay on the B lead that is disconnected by the
>> OVM?
>>
>> Not a very clean solution, but is it doable?
>>
>
> See figure Z-24 in the book.
>
>
> Bob . . .
>
>
Message 7
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Subject: | Re: Hanger Antenna |
Mark...
Jim Weir at RST Engineering has a dipole base station kit that works very
well for FM radio and VHF com. You can build it to whatever center
frequency suits you, typically 108-130 Mhz. I have built a couple and they
work very well. They do require a lead-in of 50 ohm coax. from there you
can use a splitter for VHF com radio and FM radio (use a balun to connect
coax to twin-lead).
TV is another antenna as the VHF channels are centered around 75 Mhz.
http://www.rst-engr.com/rst/catalog/base_station_antenna.html
Chris Stone
RV-8
Newberg, OR
>
> At 06:38 AM 6/13/2013, you wrote:
>
>> Bob,
>> I was wondering if there is an antenna type that I can install on the
>> exterior of my hanger and wire it into the hanger that will provide signal
>> to my FM music radio TV, and VHF handheld. I presently have antennas for
>> each internally mounted inside the hanger. They work fine until I close
>> the hanger door. If the outside hanger antenna had a "repeater" inside I
>> think it would work. Is there such a device? I want to minimize the number
>> of holes I put in the hanger wall.
>> TNX
>> Mark Banus
>>
>
> I presume you're willing to use only one service
> at a time. I.e. you don't need to watch tv and
> listen to the hand-held at the same time.
>
> There are some effective, broadband antennas most
> notable of which is called the 'discone'. One
> example is offered here
>
> http://tinyurl.com/54fk
>
> You can build these things pretty easily. It just
> depends on how much your time is worth. If you're
> inclined to hammer one out yourself, consider
>
> http://tinyurl.com/kc9ruge
>
> The discone is not an efficient antenna but it's
> performance over a broad range of frequencies is
> the selling point. If your TV/FM/VHF signals are
> not 'fringe' levels, the discone is a good option.
>
> Bob . . .
>
>
Message 8
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Wow- that practical antenna design document contains a wealth of
information; thanks for the link Bob.
Johannesburg Jay
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: 13 June 2013 02:43 PM
Subject: Re: AeroElectric-List: Hanger Antenna
--> <nuckolls.bob@aeroelectric.com>
At 06:38 AM 6/13/2013, you wrote:
>Bob,
>I was wondering if there is an antenna type that I can install on the
>exterior of my hanger and wire it into the hanger that will provide
>signal to my FM music radio TV, and VHF handheld. I presently have
>antennas for each internally mounted inside the hanger. They work fine
>until I close the hanger door. If the outside hanger antenna had a
>"repeater" inside I think it would work. Is there such a device? I
>want to minimize the number of holes I put in the hanger wall.
>TNX
>Mark Banus
I presume you're willing to use only one service
at a time. I.e. you don't need to watch tv and
listen to the hand-held at the same time.
There are some effective, broadband antennas most
notable of which is called the 'discone'. One
example is offered here
http://tinyurl.com/54fk
You can build these things pretty easily. It just
depends on how much your time is worth. If you're
inclined to hammer one out yourself, consider
http://tinyurl.com/kc9ruge
The discone is not an efficient antenna but it's
performance over a broad range of frequencies is
the selling point. If your TV/FM/VHF signals are
not 'fringe' levels, the discone is a good option.
Bob . . .
Message 9
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Subject: | Re: Hanger Antenna |
At 08:18 AM 6/13/2013, you wrote:
>Mark...
>
>Jim Weir at RST Engineering has a dipole base
>station kit that works very well for FM radio
>and VHF com. You can build it to whatever
>center frequency suits you, typically 108-130
>Mhz. I have built a couple and they work very
>well. They do require a lead-in of 50 ohm
>coax. from there you can use a splitter for
>VHF com radio and FM radio (use a balun to connect coax to twin-lead).
>TV is another antenna as the VHF channels are centered around 75 Mhz.
The off-air VHF tv channels run 59 to 88 Mhz for ch 2-6
and then skip over the fm broadcast, vhf aviation, ham
radio and pubic service frequencies to pick up at 175-
216 Mhz for ch 7-13. The dipole Jim describes is probably
no less efficient at the extremes of your range of
interest than the discone.
Bob . . .
Message 10
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Subject: | Re: Hanger Antenna |
But since the digital TV conversion, most of the TV channels are now on
UHF (even if they show up as "Channel 2" on your set) you need some
antenna elements in the 500-800 MHz range too. At least in the
Seattle/Tacoma area there are only 2 VHF TV signals left even though we
have stations 2, 4, 5, 7, 9, 13 (plus a bunch of UHF).
Bill
On 6/13/13 6:18 AM, Christopher Cee Stone wrote:
> Mark...
>
> Jim Weir at RST Engineering has a dipole base station kit that works
> very well for FM radio and VHF com. You can build it to whatever
> center frequency suits you, typically 108-130 Mhz. I have built a
> couple and they work very well. They do require a lead-in of 50 ohm
> coax. from there you can use a splitter for VHF com radio and FM
> radio (use a balun to connect coax to twin-lead).
> TV is another antenna as the VHF channels are centered around 75 Mhz.
>
> http://www.rst-engr.com/rst/catalog/base_station_antenna.html
>
>
> Chris Stone
> RV-8
> Newberg, OR
>
>
> At 06:38 AM 6/13/2013, you wrote:
>
> Bob,
> I was wondering if there is an antenna type that I can install
> on the exterior of my hanger and wire it into the hanger that
> will provide signal to my FM music radio TV, and VHF handheld.
> I presently have antennas for each internally mounted inside
> the hanger. They work fine until I close the hanger door. If
> the outside hanger antenna had a "repeater" inside I think it
> would work. Is there such a device? I want to minimize the
> number of holes I put in the hanger wall.
> TNX
> Mark Banus
>
>
> I presume you're willing to use only one service
> at a time. I.e. you don't need to watch tv and
> listen to the hand-held at the same time.
>
> There are some effective, broadband antennas most
> notable of which is called the 'discone'. One
> example is offered here
>
> http://tinyurl.com/54fk
>
> You can build these things pretty easily. It just
> depends on how much your time is worth. If you're
> inclined to hammer one out yourself, consider
>
> http://tinyurl.com/kc9ruge
>
> The discone is not an efficient antenna but it's
> performance over a broad range of frequencies is
> the selling point. If your TV/FM/VHF signals are
> not 'fringe' levels, the discone is a good option.
>
> Bob . . .
>
>
> *
>
>
> *
Message 11
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Subject: | Re: Hanger Antenna |
At 10:02 AM 6/13/2013, you wrote:
>But since the digital TV conversion, most of the TV channels are now
>on UHF (even if they show up as "Channel 2" on your set) you need
>some antenna elements in the 500-800 MHz range too. At least in the
>Seattle/Tacoma area there are only 2 VHF TV signals left even though
>we have stations 2, 4, 5, 7, 9, 13 (plus a bunch of UHF).
>
>Bill
Interesting. I'd not kept up with those changes.
In that case, I think the discone cut for a lower
frequency on the order of 75 MHz is called for.
That would capture the FM and aviation frequencies
with some efficiency with pretty decent coverage
in the upper reaches.
Bob . . .
Message 12
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Subject: | Re: Hanger Antenna |
Plan C . . .
As long as you don't want to use the antenna
for talking with your hand held, there's another
option for a broad spectrum receive only antenna.
http://tinyurl.com/kex8u4k
Bob . . .
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