Today's Message Index:
----------------------
1. 07:37 AM - Re: Hanger Antenna (Bill Putney)
2. 07:59 AM - Re: Hanger Antenna (H. Marvin Haught)
3. 10:10 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
4. 10:55 AM - Re: Hanger Antenna (H. Marvin Haught)
5. 11:48 AM - Re: Hanger Antenna (Robert L. Nuckolls, III)
6. 12:20 PM - Re: LED similar to EL strip (Robert L. Nuckolls, III)
7. 12:50 PM - Re: LED similar to EL strip (rayj)
8. 12:59 PM - Re: Hanger Antenna (H. Marvin Haught)
9. 01:12 PM - Re: LED similar to EL strip (rayj)
10. 02:44 PM - Re: Hanger Antenna (Bill Putney)
11. 04:48 PM - Hushacom intercom (Bob)
12. 05:03 PM - Re: Hanger Antenna (Robert L. Nuckolls, III)
13. 06:12 PM - Re: Hanger Antenna (H. Marvin Haught)
Message 1
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Subject: | Re: Hanger Antenna |
Hmmm... Huntsville, AR
Here's where your TV stations are with respect to the airport. They are
all a good distance away but not on one common mountain top. All of them
except the PBS station (which is on a high VHF channel) are on UHF.
It doesn't look like there are a lot of strong signals so overload of an
amplified antenna shouldn't be a problem. I don't think a single antenna
is going to do everything for you though.
I'd look at RV amplified TV antennas for the TV. They're usually a disk
shaped thing that will have some sort of mounting that can be done to
the roof of your hangar. I usually don't like these antennas because in
hilly areas they can compromise reception because of multipath
(receiving bounces that are slightly out of time with the main signal).
In the old analog TV days this would show up as ghosting. Now with
digital it degrades the signal because of (apparent) jitter. But they
are easy to install and use.
The AM/FM and Air radios can all work off a garden variety car radio
antenna. All of this will have to work with radios and TV sets that have
antenna connectors that you can attach the antenna's to.
Bill
On 6/16/13 11:35 AM, H. Marvin Haught wrote:
> I am located at H34.
>
> M. Haught
> On Jun 16, 2013, at 1:08 PM, Bill Putney wrote:
>
>> When had a Port-A-Port hangar in Oakland, CA I had a similar problem.
>> These are T hangars and the corrugated roof has about a 4" overhang
>> on the back edge. I punched a hole for a whip I cut to the aircraft
>> band for the scanner I used to listen to ATIS and Tower frequencies
>> and punched another hole and mounted a car radio antenna for
>> everything else. Since the holes were in the overhang area there was
>> never a problem with leaks. The coaxial from the antennas I just
>> brought in at a high spot in the corrugations. If you're in a
>> metropolitan area this should work. If you're out in the countryside
>> somewhere, you'll need a TV antenna pointed toward where the TV
>> transmitters are.
>>
>> If you send me your airport ICAO code I'll tell you what you need and
>> where to point the antennas.
>>
>> Bill Putney
>> Navion owner
>> A&P/IA
>> WB6RFW
>> Chief Engineer - KPTZ FM
>> Port Townsend, WA
>>
>> On 6/16/13 10:36 AM, H. Marvin Haught wrote:
>>> I do not know even enough to talk intelligently about the subject!
>>> I would like a single antenna to where I can improve TV reception,
>>> FM radio reception, and use as a receiver antenna for my hand held
>>> aircraft radio. Only receive, not transmit.
>>>
>>> I have a "wiring closet" with the hangar wall immediate to that
>>> location. I would run the coax out an up the wall to the antenna
>>> mounted at the edge of the roof, right straight up from the wiring
>>> closet, and house the enclosure in that closet. Was looking at the
>>> Ramsey AA&C for that purpose, but with an externally mounted
>>> antenna. Or is there a better alternative? Oh, I live in a 60 x 60
>>> metal hangar, and reception inside is pretty poor.
>>>
>>> M. Haught
>>> On Jun 16, 2013, at 12:16 PM, Robert L. Nuckolls, III wrote:
>>>
>>>> At 10:47 AM 6/16/2013, you wrote:
>>>>> Bob, -
>>>>>
>>>>> I am interested in this antenna too, but need the HF as one of my
>>>>> available stations is an HF signal. Can the antenna be mounted
>>>>> outside and enclosure remain inside?
>>>>>
>>>>> M. Haught
>>>>
>>>> Sure. There are lots of HF active antenna products
>>>> and DIY designs out there. Are you looking to build
>>>> or buy one? What's your range of interest for frequencies?
>>>> What is the nature of the proposed outside antenna
>>>> and feedline?
>>>>
>>>>
>>>> Bob . . .
>>>>
>>>> *
>>>>
>>>> href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List
>>>> href="http://forums.matronics.com/">http://forums.matronics.com
>>>> href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>>>>
>>>> *
>>>
>>> *
>>>
>>>
>>> *
>>
>> *
>>
>>
>> *
>
> *
>
>
> *
Message 2
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Subject: | Re: Hanger Antenna |
Thank Bill -
I will look into those.
M. Haught
On Jun 17, 2013, at 9:36 AM, Bill Putney wrote:
> Hmmm... Huntsville, AR
>
> Here's where your TV stations are with respect to the airport. They
are all a good distance away but not on one common mountain top. All of
them except the PBS station (which is on a high VHF channel) are on UHF.
>
> <Screen Shot 2013-06-17 at 7.14.05 AM.png>
>
> It doesn't look like there are a lot of strong signals so overload of
an amplified antenna shouldn't be a problem. I don't think a single
antenna is going to do everything for you though.
>
> I'd look at RV amplified TV antennas for the TV. They're usually a
disk shaped thing that will have some sort of mounting that can be done
to the roof of your hangar. I usually don't like these antennas because
in hilly areas they can compromise reception because of multipath
(receiving bounces that are slightly out of time with the main signal).
In the old analog TV days this would show up as ghosting. Now with
digital it degrades the signal because of (apparent) jitter. But they
are easy to install and use.
>
> The AM/FM and Air radios can all work off a garden variety car radio
antenna. All of this will have to work with radios and TV sets that have
antenna connectors that you can attach the antenna's to.
>
> Bill
>
> On 6/16/13 11:35 AM, H. Marvin Haught wrote:
>> I am located at H34.
>>
>> M. Haught
>> On Jun 16, 2013, at 1:08 PM, Bill Putney wrote:
>>
>>> When had a Port-A-Port hangar in Oakland, CA I had a similar
problem. These are T hangars and the corrugated roof has about a 4"
overhang on the back edge. I punched a hole for a whip I cut to the
aircraft band for the scanner I used to listen to ATIS and Tower
frequencies and punched another hole and mounted a car radio antenna for
everything else. Since the holes were in the overhang area there was
never a problem with leaks. The coaxial from the antennas I just brought
in at a high spot in the corrugations. If you're in a metropolitan area
this should work. If you're out in the countryside somewhere, you'll
need a TV antenna pointed toward where the TV transmitters are.
>>>
>>> If you send me your airport ICAO code I'll tell you what you need
and where to point the antennas.
>>>
>>> Bill Putney
>>> Navion owner
>>> A&P/IA
>>> WB6RFW
>>> Chief Engineer - KPTZ FM
>>> Port Townsend, WA
>>>
>>> On 6/16/13 10:36 AM, H. Marvin Haught wrote:
>>>> I do not know even enough to talk intelligently about the subject!
I would like a single antenna to where I can improve TV reception, FM
radio reception, and use as a receiver antenna for my hand held aircraft
radio. Only receive, not transmit.
>>>>
>>>> I have a "wiring closet" with the hangar wall immediate to that
location. I would run the coax out an up the wall to the antenna
mounted at the edge of the roof, right straight up from the wiring
closet, and house the enclosure in that closet. Was looking at the
Ramsey AA&C for that purpose, but with an externally mounted antenna.
Or is there a better alternative? Oh, I live in a 60 x 60 metal hangar,
and reception inside is pretty poor.
>>>>
>>>> M. Haught
>>>> On Jun 16, 2013, at 12:16 PM, Robert L. Nuckolls, III wrote:
>>>>
>>>>> At 10:47 AM 6/16/2013, you wrote:
>>>>>> Bob, -
>>>>>>
>>>>>> I am interested in this antenna too, but need the HF as one of my
available stations is an HF signal. Can the antenna be mounted outside
and enclosure remain inside?
>>>>>>
>>>>>> M. Haught
>>>>>
>>>>> Sure. There are lots of HF active antenna products
>>>>> and DIY designs out there. Are you looking to build
>>>>> or buy one? What's your range of interest for frequencies?
>>>>> What is the nature of the proposed outside antenna
>>>>> and feedline?
>>>>>
>>>>>
>>>>> Bob . . .
>>>>>
>>>>>
>>>>>
>>>>>
href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.m
atronics.com/Navigator?AeroElectric-List
>>>>> href="http://forums.matronics.com/">http://forums.matronics.com
>>>>>
href="http://www.matronics.com/contribution">http://www.matronics.com/co
ntribution
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
Message 3
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Subject: | Re: Hanger Antenna |
At 09:59 AM 6/17/2013, you wrote:
>Thank Bill -
>
>I will look into those.
>
>M. Haught
Bill brings up some important points that should be
considered in this discussion about unobtrusive antennas.
The 'active', omni-directional, untuned antenna for
UHF/VHF is never capable competition for directional
antennas specific to a frequency.
My impression of design goals for the beginnings
of this thread suggested that signals of interest
were adequate to used on a hand held transceiver,
a portable FM receiver or perhaps a portable TV
receiver EACH OF WHICH uses some form of attached,
whisker antenna.
In other words, the task was to work around the
shielding qualities of a steel building. The reasons
for adding transistors to the base of an antenna
is two-fold (1) allow a VERY high impedance, non-resonant
whisker to drive a relatively low impedance coax feed line
and (2) add some gain which tends to overcome (a)
losses in the feed line and (b) augment a marginal
signal.
If you stand on the roof of your hangar (or other
RF unfriendly building) and experience useable
performance from the hand-held, then the active
antenna I've suggested will EXTEND that usefulness
into the building.
Adding gain to burrow into atmospheric noise
is another game entirely . . . a game that can
be played by specifically tailored active antennas.
Just be aware that the laws of physics are inviolate
and the act of adding some transistors to the
base of your antenna is not a universal solution
for weak, noisy or otherwise over-the-horizon signals.
So to watch that station in Fayetteville from
Huntsville is a hop of 22 miles. No big deal IF
you can 'see' the transmitter from the top of
your hangar. If you can take a hand-held up and
get adequate performance on this signal source, then
the simple active antenna has a high probability of
meeting your needs. Otherwise, plan-B is called
for . . . have you considered Netflix? We dumped
cable a couple years ago and never missed it.
Bob . . .
Message 4
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Subject: | Re: Hanger Antenna |
Great reply...yes, for entertainment, I watch Netflix almost
exclusively. But even my weather radio doesn't pick up well in the
hangar, unless he front door is open. And with the severe weather we
have been having the last few years, that is not a minor consideration.
And I do like to watch the news, either morning or evening. Since I
live in the hangar and am always at the airport unless traveling, I
would like to monitor the Unicom frequency for traffic - would be nice
to have transmit capability, but not necessity. I have been given a
tower for TV antenna, but it will be a major pain to ever get permission
to erect it, even though I have the beacon tower in my front yard. Not
to mention the time an expense to put it up. No more than I watch TV,
it would be nice to have an easily acquired and installed antenna that
can go on the roof right above my electrical closet.
On Jun 17, 2013, at 12:08 PM, Robert L. Nuckolls, III wrote:
<nuckolls.bob@aeroelectric.com>
>
> At 09:59 AM 6/17/2013, you wrote:
>> Thank Bill -
>>
>> I will look into those.
>>
>> M. Haught
>
> Bill brings up some important points that should be
> considered in this discussion about unobtrusive antennas.
>
> The 'active', omni-directional, untuned antenna for
> UHF/VHF is never capable competition for directional
> antennas specific to a frequency.
>
> My impression of design goals for the beginnings
> of this thread suggested that signals of interest
> were adequate to used on a hand held transceiver,
> a portable FM receiver or perhaps a portable TV
> receiver EACH OF WHICH uses some form of attached,
> whisker antenna.
Exactly my goal.
>
> In other words, the task was to work around the
> shielding qualities of a steel building. The reasons
> for adding transistors to the base of an antenna
> is two-fold (1) allow a VERY high impedance, non-resonant
> whisker to drive a relatively low impedance coax feed line
> and (2) add some gain which tends to overcome (a)
> losses in the feed line and (b) augment a marginal
> signal.
You are right on with this statement.
>
> If you stand on the roof of your hangar (or other
> RF unfriendly building) and experience useable
> performance from the hand-held, then the active
> antenna I've suggested will EXTEND that usefulness
> into the building.
This is the limit of what I want to do. A friend has his travel trailer
right beside my hangar and has great TV / FM reception from his little
crank up antenna on the trailer, which is what gave me the incentive to
join this discussion.
>
> Adding gain to burrow into atmospheric noise
> is another game entirely . . . a game that can
> be played by specifically tailored active antennas.
>
> Just be aware that the laws of physics are inviolate
> and the act of adding some transistors to the
> base of your antenna is not a universal solution
> for weak, noisy or otherwise over-the-horizon signals.
>
> So to watch that station in Fayetteville from
> Huntsville is a hop of 22 miles. No big deal IF
> you can 'see' the transmitter from the top of
> your hangar. If you can take a hand-held up and
> get adequate performance on this signal source, then
> the simple active antenna has a high probability of
> meeting your needs. Otherwise, plan-B is called
> for . . . have you considered Netflix? We dumped
> cable a couple years ago and never missed it.
See remark about the travel trailer above! So... if I build the
Groundplane Antenna - Model FA2 in from the site you provide at the
first of this thread, mount it on a short piece of pipe so it will stick
up three or four feet above the eave of my hangar (there is no hangar
overhang) and mount it securely to the wall of the hangar, that should
provide me with good reception for my limited scale of usage? Will I
need any kind of amplifier? Is that what you mean by an "active"
antenna? Signal boost through the coax to the distribution box?
M. haught
>
>
>
> Bob . . .
>
>
>
>
Message 5
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Subject: | Re: Hanger Antenna |
At 12:54 PM 6/17/2013, you wrote:
Great reply...yes, for entertainment, I watch Netflix almost
exclusively. But even my weather radio doesn't pick up well in the
hangar, unless he front door is open.
Aha! So you're simply wanting to extend the
radio's existing reach beyond the sheet metal . . .
And with the severe weather we have been having the last few years,
that is not a minor consideration.
We live 100 miles from any area of population
favored with real time commercial weather watching.
Our local network of linked repeaters and hams on
storm watch augment intellicast radar on the
'net.
And I do like to watch the news, either morning or evening.
There's a BUNCH of streaming AM and FM news stations
that perhaps includes your locals. I keep track of
Wichita happenings with streamed audio from a Wichita
AM station.
Since I live in the hangar and am always at the airport unless
traveling, I would like to monitor the Unicom frequency for traffic -
would be nice to have transmit capability, but not necessity. I have
been given a tower for TV antenna, but it will be a major pain to
ever get permission to erect it, even though I have the beacon tower
in my front yard. Not to mention the time an expense to put it
up. No more than I watch TV, it would be nice to have an easily
acquired and installed antenna that can go on the roof right above my
electrical closet.
Your narrative suggests that a simple active
antenna might do what needs to be done.
If you need only VHF/COMM and Wx, then consider the
plain-vanilla ground plane cut for VHF/Comm
You can transmit on that antenna and it will
probably pick up the VHF/Wx services just fine.
Bob . . .
Message 6
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Subject: | Re: LED similar to EL strip |
At 08:58 PM 3/26/2013, you wrote:
>
>Saw this item and thought of the EL strips that were so noisy. This
>is listed as a flat LED.
Some months back a List reader cited this LED lighting
product in the Jameco catalog
http://tinyurl.com/kero4v8
Emacs!
I ordered one to get a looksee . . . received it a few days later. I
was pursuing the bank statement and discovered that they comped me
on the part . . . Thanks Greg!
Here's JKL's data sheet on the product.
http://tinyurl.com/mvuazxh
This is a strip array of led junctions . . . pretty tightly spaced.
Estimate .08" apart. The assembly is rated at 10.5v, 350 mA or
3.5 watts. Needless to say, the light output is considerable. This
picture was taken at room ambient light; output from the lamp assembly
stopped the camera way down.
The backplane is aluminum sheet. This looks like it would be used
for edge-lighting a display. Applications for our needs don't
immediately come to mind. This is best driven by a constant current
power supply like a BuckPuck or similar.
If anyone has an idea where this particular product would fill
the bill, drop me a note and I'll mail you this one.
Bob . . .
Message 7
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Subject: | Re: LED similar to EL strip |
Message 8
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Subject: | Re: Hanger Antenna |
So....would this antenna be a good choice? http://www.packetradio.com/catalog/index.php?main_page=product_info&cPath=8&products_id=719&zenid=f54jdbbvkfu36cfi0eqgo6p4f5
M. Haught
On Jun 17, 2013, at 1:47 PM, Robert L. Nuckolls, III wrote:
>
> At 12:54 PM 6/17/2013, you wrote:
> Great reply...yes, for entertainment, I watch Netflix almost exclusively. But
even my weather radio doesn't pick up well in the hangar, unless he front door
is open.
>
> Aha! So you're simply wanting to extend the
> radio's existing reach beyond the sheet metal . . .
>
> And with the severe weather we have been having the last few years, that is not
a minor consideration.
>
> We live 100 miles from any area of population
> favored with real time commercial weather watching.
> Our local network of linked repeaters and hams on
> storm watch augment intellicast radar on the
> 'net.
>
> And I do like to watch the news, either morning or evening.
>
> There's a BUNCH of streaming AM and FM news stations
> that perhaps includes your locals. I keep track of
> Wichita happenings with streamed audio from a Wichita
> AM station.
>
> Since I live in the hangar and am always at the airport unless traveling, I would
like to monitor the Unicom frequency for traffic - would be nice to have
transmit capability, but not necessity. I have been given a tower for TV antenna,
but it will be a major pain to ever get permission to erect it, even though
I have the beacon tower in my front yard. Not to mention the time an expense
to put it up. No more than I watch TV, it would be nice to have an easily
acquired and installed antenna that can go on the roof right above my electrical
closet.
>
> Your narrative suggests that a simple active
> antenna might do what needs to be done.
>
> If you need only VHF/COMM and Wx, then consider the
> plain-vanilla ground plane cut for VHF/Comm
> You can transmit on that antenna and it will
> probably pick up the VHF/Wx services just fine.
>
>
> Bob . . .
>
>
>
>
Message 9
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Subject: | Re: LED similar to EL strip |
'Gotta remember to delete images when I reply.
How noisy is it. Can it be easily dimmed? I was thinking about it for
instrument panel lighting, like the EL strips.
Raymond Julian
Kettle River, MN.
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
On 06/17/2013 02:19 PM, Robert L. Nuckolls, III wrote:
> At 08:58 PM 3/26/2013, you wrote:
>>
>> Saw this item and thought of the EL strips that were so noisy.
>> This is listed as a flat LED.
>>
>
> Some months back a List reader cited this LED lighting
> product in the Jameco catalog
>
> http://tinyurl.com/kero4v8 <http://tinyurl.com/kero4v8>
>
> IMAGE DELETED
>
> I ordered one to get a looksee . . . received it a few days later. I
> was pursuing the bank statement and discovered that they comped me
> on the part . . . Thanks Greg!
>
> Here's JKL's data sheet on the product.
>
> http://tinyurl.com/mvuazxh <http://tinyurl.com/mvuazxh>
>
> This is a strip array of led junctions . . . pretty tightly spaced.
> Estimate .08" apart. The assembly is rated at 10.5v, 350 mA or
> 3.5 watts. Needless to say, the light output is considerable. This
> picture was taken at room ambient light; output from the lamp assembly
> stopped the camera way down.
>
> The backplane is aluminum sheet. This looks like it would be used
> for edge-lighting a display. Applications for our needs don't
> immediately come to mind. This is best driven by a constant current
> power supply like a BuckPuck or similar.
>
> If anyone has an idea where this particular product would fill
> the bill, drop me a note and I'll mail you this one.
>
>
> Bob . . .
>
Message 10
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Subject: | Re: Hanger Antenna |
Keep it simple. Use a car radio antenna for AM/FM/Air. If you go out and
buy a broadband (like a discone) antenna that's kind of over kill. The
scanner antennas from Radio Shack rain elements after a high wind or ice
event. If you want a cool discone antenna, but a good quality one with
solid stainless steel radial rods. Radio Shack's radials are thin tubes
crimped onto screw fittings.
But like I said. for under $20 buy a car radio antenna and drill a hole
in the edge of the hangar roof with a step drill.
http://www.amazon.com/UNIV-SPIRAL-ANTENNA-BLACK/dp/B00BSES7XO/ref=sr_1_68?s=electronics&ie=UTF8&qid=1371505017&sr=1-68&keywords=car+am+fm+radio+antenna+-sections
This one I found on Amazon.
Bill
On 6/17/13 12:59 PM, H. Marvin Haught wrote:
>
> So....would this antenna be a good choice? http://www.packetradio.com/catalog/index.php?main_page=product_info&cPath=8&products_id=719&zenid=f54jdbbvkfu36cfi0eqgo6p4f5
>
>
> M. Haught
> On Jun 17, 2013, at 1:47 PM, Robert L. Nuckolls, III wrote:
>
>>
>> At 12:54 PM 6/17/2013, you wrote:
>> Great reply...yes, for entertainment, I watch Netflix almost exclusively. But
even my weather radio doesn't pick up well in the hangar, unless he front door
is open.
>>
>> Aha! So you're simply wanting to extend the
>> radio's existing reach beyond the sheet metal . . .
>>
>> And with the severe weather we have been having the last few years, that is
not a minor consideration.
>>
>> We live 100 miles from any area of population
>> favored with real time commercial weather watching.
>> Our local network of linked repeaters and hams on
>> storm watch augment intellicast radar on the
>> 'net.
>>
>> And I do like to watch the news, either morning or evening.
>>
>> There's a BUNCH of streaming AM and FM news stations
>> that perhaps includes your locals. I keep track of
>> Wichita happenings with streamed audio from a Wichita
>> AM station.
>>
>> Since I live in the hangar and am always at the airport unless traveling, I
would like to monitor the Unicom frequency for traffic - would be nice to have
transmit capability, but not necessity. I have been given a tower for TV antenna,
but it will be a major pain to ever get permission to erect it, even though
I have the beacon tower in my front yard. Not to mention the time an expense
to put it up. No more than I watch TV, it would be nice to have an easily
acquired and installed antenna that can go on the roof right above my electrical
closet.
>>
>> Your narrative suggests that a simple active
>> antenna might do what needs to be done.
>>
>> If you need only VHF/COMM and Wx, then consider the
>> plain-vanilla ground plane cut for VHF/Comm
>> You can transmit on that antenna and it will
>> probably pick up the VHF/Wx services just fine.
>>
>>
>> Bob . . .
>>
>>
>>
>>
>
>
Message 11
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Subject: | Hushacom intercom |
Does anyone have a schemetic for a two place hushacom intercom they
would be willing to share. Thanks,Bob
Message 12
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Subject: | Re: Hanger Antenna |
At 02:59 PM 6/17/2013, you wrote:
><handainc@madisoncounty.net>
>
>So....would this antenna be a good
>choice?
>http://www.packetradio.com/catalog/index.php?main_page=product_info&cPath=8&products_id=719&zenid=f54jdbbvkfu36cfi0eqgo6p4f5
>
That's a bit big and not centered on VHF comm
(assuming you'd like to transmit on it).
Build yourself a VHF Comm whisker and mount it
right to the roof sheet as if it were the skin
of an airplane.
http://tinyurl.com/madgr9v
This eliminates the need for any kind of 'mast'
too.
Bob . . .
Message 13
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Subject: | Re: Hanger Antenna |
That is JUST what I needed! For someone that knows absolutely nothing about this
stuff, you can't get too simple in the explanations.
I'll build that antenna - give me good practice for doing the antennas for my project.
M. Haught
On Jun 17, 2013, at 7:02 PM, Robert L. Nuckolls, III wrote:
>
> At 02:59 PM 6/17/2013, you wrote:
>>
>> So....would this antenna be a good choice? http://www.packetradio.com/catalog/index.php?main_page=product_info&cPath=8&products_id=719&zenid=f54jdbbvkfu36cfi0eqgo6p4f5
>>
>
> That's a bit big and not centered on VHF comm
> (assuming you'd like to transmit on it).
>
> Build yourself a VHF Comm whisker and mount it
> right to the roof sheet as if it were the skin
> of an airplane.
>
> http://tinyurl.com/madgr9v
>
> This eliminates the need for any kind of 'mast'
> too.
>
>
>
> Bob . . .
>
>
>
>
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