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1. 10:52 PM - Re: buried antennas (Gary Vogt)
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| Subject: | Re: buried antennas |
I've received several emails off line about the buried antennas.
Summary: I first buried antennas in a Cheetah in 1990. On two occasions (in
that plane) I could not talk to someone behind me. The first was a tower from
an airport I was leaving (I think it was El Monte in SoCal). I responded but he
called again. I rolled the plane to the left about 10 degrees, transmitted,
then back straight. He heard me fine.
The second time was at Pine Mountain Lake. It's a fly-in community near
Yosemite National Park. The person I was talking to was taxiing behind me
around the park. As we rounded a bend, I transmitted and he heard me fine.
I buried the antennas in my second Cheetah also. Never had a problem.
I buried one antenna in about 10 other planes without problems being reported
back to me.
I buried the antennas in my Tiger in 2004 about a month after I bought it. I've
never had an incident where I couldn't talk to a tower or receive ATIS or
anything else. In flight, in my Tiger, I've talked to planes over 300 miles
away. Generally, I can pick up an ATIS 80 miles away over flat ground. I
installed the buried antennas in the subject plane in the same fashion I did
mine.
Now we wait and see.
________________________________
From: 923te <923te@att.net>
Sent: Wed, July 28, 2010 10:56:28 AM
Subject: Re: TeamGrumman-List: buried antennas
You mean
Now you hear 'em now you don't
;)
On Jul 28, 2010, at 11:17 AM, Gary Vogt <teamgrumman@YAHOO.COM> wrote:
now you see 'm, now you don't
>
>
________________________________
From: Gary Vogt <teamgrumman@YAHOO.COM>
>To: teamgrumman-list@matronics.com
>Sent: Tue, July 27, 2010 8:29:33 PM
>Subject: Re: TeamGrumman-List: buried antennas
>
>
>With both antennas in the dorsal, the most forward antenna is acceptable aft.
> I've found I can hear those behind me, but they can't hear me. I just roll out
>and transmit, then roll back.
>
>
________________________________
From: 923te <923te@att.net>
>To: "teamgrumman-list@matronics.com" <teamgrumman-list@matronics.com>
>Sent: Tue, July 27, 2010 2:29:21 PM
>Subject: Re: TeamGrumman-List: buried antennas
>
>
>Blond spot = blind spot
>
>
>Or is it the other way around...
> thru the associative property?
>
>
>On Jul 27, 2010, at 4:07 PM, 923te <923te@att.net> wrote:
>
>
>With the dorsal fin hidden antenna I find there is a blond spot. It's pretty
>bad sometimes. I had to relay ATC to Stu, who has the hidden ant, and have to
>use the belly ant during all xcountries while using flight following. The dorsal
>ant works great for forward towers but loses aft towers quickly
>>
>>
>>
>>Just a heads up......
>>
>>
>>
>>
>>On Jul 27, 2010, at 1:48 PM, Gary Vogt <teamgrumman@YAHOO.COM> wrote:
>>
>>
>>Here's a good one.
>>>
>>>
>>>A fellow Grumman owner, Horatio (the name is changed to protect the innocent),
>>>has always complained that his radios (comms) are really bad. He can hear
>>>sometimes, but not always. He can be heard almost never. Last year he went
to
>>>Canada and was in fear of being shot down for crossing the border without
>>>talking to anyone. Oh, he tried, but couldn't reach anyone. He told me that,
>>>for the most part, the range on his radios was about 10 miles. He does have
4
>>>GPSs in his plane though.
>>>
>>>
>>>Dave had his antennas buried years ago. But, never really knew where. Last
>>>year, he found them: one was in the wing tip, the other in . . . . hold that
>>>thought. The one in the right wing tip looked kind of like a flat 12"x12"
>>>aluminum Christmas tree ornament. Last year, he came to me and asked me to
>>>install install another one of these ornaments in the left wing tip. I laughed,
>>>of course. There was no way I was going to waste my time installing another
>>>antenna that doesn't work. I told him I'd install two antennas in the dorsal
>>>fin if he wanted buried antennas (he was reluctant because he'd have to get
it
>>>painted.) He hemmed and hawed for months, finally agreeing to the new antennas.
>>>
>>>
>>>
>>>I prepped the dorsal fin channel and waited. He showed up yesterday. We went
>>>to work. What I found was amazing: lots of cutoff coax going into the spar
and
>>>then going nowhere and an antenna in the right wing root. Yup. The second
>>>antenna was attached to the honeycomb bulkhead in the wing root. Put it this
>>>way, when you first step onto the wing walk, your first step is where the
>>>antenna was. I found the LORAN antenna in the other wing root. They had to
>>>have been installed with the wing off. I could not get to the screws. I had
to
>>>cut the nuts off with a Dremel and then cut the antennas in half to get them
>>>out. The coax was sealed with some sort of epoxy where it goes into the cabin.
>>>
>>>
>>>
>>>I wonder what he'll do when he's able to hear ATIS or AWOS 80 miles away. He
>>>may fly out of the local area again.
>>>
>>>
>>>Gary
>>>
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