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bbradburry(at)bellsouth.n Guest
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Posted: Sat May 12, 2012 8:16 am Post subject: Intermittent no radio reception |
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I had a problem with my radio reception today and I am not certain where to
look for the cause. I was flying and the radio was working fine. I was
listening to Approach while I flew around and I could hear them fine. I
decide to land, so I dialed in ATIS. I didn't get anything. I noticed that
I didn't have the "RX" showing on the radio. At the time I was about 25
miles away and 2K feet. I thought maybe I was too low and far away,
although I had been listening to Approach when I dialed in ATIS. As I got
closer, I climbed a little and suddenly I could hear them so I didn't think
much more about it. But I am pretty sure that I should have been able to
hear them because I could almost see the airport from where I was.
After I contacted approach and was handed off to Sanford tower, I didn't
hear from the tower for several minutes, then they asked me "how do you
hear?". I replied "Fine". I didn't think much more about that incident
either, but after I got home, I listened to the tower archives and I found
that the tower had asked me 4 times how do you hear and I only heard the
last one.
This makes me feel that I have some kind of intermittent problem with
receive. Everything else was working on the radio that I know of. It seems
to be just an intermittent receive problem. Do you have any ideas where I
should look for something like that?
I have this type of antenna.
http://www.aircraftspruce.com/catalog/avpages/antennasystems.php
It does not have a ground plane as it is a half wave antenna. The one I
have it the 5T which allows the coax to come out and be supported on the
side of the fuselage with mounting brackets. The antenna is inside the
fuselage just behind the rear bulkhead on the Lancair Legacy. It is mostly
vertical, but the ends (top and bottom) curve following the shape of the
fuselage and become horizontal for the last 4-5 inches. I think the antenna
is something like 41-42 inches long. My plane is all fiberglass. The only
carbon fiber is in the horizontal stabilizer, leg fairings, and the wheel
pants. None of this carbon is closer than three feet or so to the antenna.
But what ever this is, it is intermittent. The receive and transmit seem to
work fine until they don't work at all. I have heard others tell me that my
transmissions were staticy from time to time, which is why I have been
trying to hear myself by listening to the recordings from ATC. If I had not
done that I would not even have known that I missed 3 radio calls from ATC.
I was probably close to 5-6 miles out and heading directly toward the
airport when I was missing the calls.
Also, unrelated, I noticed that if I am on autopilot, (TruTrak Digiflight II
GPSVG) that the autopilot goes haywire when the radio transmits. I have
heard of this problem on the internet but have not looked up what may be
causing it. Maybe you know off the top of your head??
Thanks for all you guys help!
Bill B
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bakerocb
Joined: 15 Jan 2006 Posts: 727 Location: FAIRFAX VA
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Posted: Sun May 13, 2012 3:28 am Post subject: Intermittent no radio reception |
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5/13/2012
Hello Bill Bradbury, You wrote: "This makes me feel that I have some kind of
intermittent problem with receive."
Are you absolutely certain that you don't have an intermittent wire
connection problem in your headset?
'OC' Baker Says: "The best investment we can make is the time and effort to
gather and understand knowledge."
==============================================================
Time: 09:16:24 AM PST US
From: "Bill Bradburry" <bbradburry(at)bellsouth.net>
Subject: Intermittent no radio reception
I had a problem with my radio reception today and I am not certain where to
look for the cause. I was flying and the radio was working fine. I was
listening to Approach while I flew around and I could hear them fine. I
decide to land, so I dialed in ATIS. I didn't get anything. I noticed that
I didn't have the "RX" showing on the radio. At the time I was about 25
miles away and 2K feet. I thought maybe I was too low and far away,
although I had been listening to Approach when I dialed in ATIS. As I got
closer, I climbed a little and suddenly I could hear them so I didn't think
much more about it. But I am pretty sure that I should have been able to
hear them because I could almost see the airport from where I was.
After I contacted approach and was handed off to Sanford tower, I didn't
hear from the tower for several minutes, then they asked me "how do you
hear?". I replied "Fine". I didn't think much more about that incident
either, but after I got home, I listened to the tower archives and I found
that the tower had asked me 4 times how do you hear and I only heard the
last one.
This makes me feel that I have some kind of intermittent problem with
receive. Everything else was working on the radio that I know of. It seems
to be just an intermittent receive problem. Do you have any ideas where I
should look for something like that?
I have this type of antenna.
http://www.aircraftspruce.com/catalog/avpages/antennasystems.php
It does not have a ground plane as it is a half wave antenna. The one I
have it the 5T which allows the coax to come out and be supported on the
side of the fuselage with mounting brackets. The antenna is inside the
fuselage just behind the rear bulkhead on the Lancair Legacy. It is mostly
vertical, but the ends (top and bottom) curve following the shape of the
fuselage and become horizontal for the last 4-5 inches. I think the antenna
is something like 41-42 inches long. My plane is all fiberglass. The only
carbon fiber is in the horizontal stabilizer, leg fairings, and the wheel
pants. None of this carbon is closer than three feet or so to the antenna.
But what ever this is, it is intermittent. The receive and transmit seem to
work fine until they don't work at all. I have heard others tell me that my
transmissions were staticy from time to time, which is why I have been
trying to hear myself by listening to the recordings from ATC. If I had not
done that I would not even have known that I missed 3 radio calls from ATC.
I was probably close to 5-6 miles out and heading directly toward the
airport when I was missing the calls.
Also, unrelated, I noticed that if I am on autopilot, (TruTrak Digiflight II
GPSVG) that the autopilot goes haywire when the radio transmits. I have
heard of this problem on the internet but have not looked up what may be
causing it. Maybe you know off the top of your head??
Thanks for all you guys help!
Bill B
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bbradburry(at)bellsouth.n Guest
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Posted: Sun May 13, 2012 5:21 am Post subject: Intermittent no radio reception |
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OC,
No I don't know if the headset is the problem, but it is a Lightspeed Mach 1
that I have had for less than a year. I could try and move wires around to
see if I can duplicate the problem.
B2
--
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bicyclop(at)pacbell.net Guest
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Posted: Sun May 13, 2012 8:38 am Post subject: Intermittent no radio reception |
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Squelch set too high?
Ed Holyoke
On 5/12/2012 9:15 AM, Bill Bradburry wrote: [quote] Quote: | --> AeroElectric-List message posted by: "Bill Bradburry" <bbradburry(at)bellsouth.net> (bbradburry(at)bellsouth.net)
I had a problem with my radio reception today and I am not certain where to
look for the cause. I was flying and the radio was working fine. I was
listening to Approach while I flew around and I could hear them fine. I
decide to land, so I dialed in ATIS. I didn't get anything. I noticed that
I didn't have the "RX" showing on the radio. At the time I was about 25
miles away and 2K feet. I thought maybe I was too low and far away,
although I had been listening to Approach when I dialed in ATIS. As I got
closer, I climbed a little and suddenly I could hear them so I didn't think
much more about it. But I am pretty sure that I should have been able to
hear them because I could almost see the airport from where I was.
After I contacted approach and was handed off to Sanford tower, I didn't
hear from the tower for several minutes, then they asked me "how do you
hear?". I replied "Fine". I didn't think much more about that incident
either, but after I got home, I listened to the tower archives and I found
that the tower had asked me 4 times how do you hear and I only heard the
last one.
This makes me feel that I have some kind of intermittent problem with
receive. Everything else was working on the radio that I know of. It seems
to be just an intermittent receive problem. Do you have any ideas where I
should look for something like that?
I have this type of antenna.
http://www.aircraftspruce.com/catalog/avpages/antennasystems.php
It does not have a ground plane as it is a half wave antenna. The one I
have it the 5T which allows the coax to come out and be supported on the
side of the fuselage with mounting brackets. The antenna is inside the
fuselage just behind the rear bulkhead on the Lancair Legacy. It is mostly
vertical, but the ends (top and bottom) curve following the shape of the
fuselage and become horizontal for the last 4-5 inches. I think the antenna
is something like 41-42 inches long. My plane is all fiberglass. The only
carbon fiber is in the horizontal stabilizer, leg fairings, and the wheel
pants. None of this carbon is closer than three feet or so to the antenna.
But what ever this is, it is intermittent. The receive and transmit seem to
work fine until they don't work at all. I have heard others tell me that my
transmissions were staticy from time to time, which is why I have been
trying to hear myself by listening to the recordings from ATC. If I had not
done that I would not even have known that I missed 3 radio calls from ATC.
I was probably close to 5-6 miles out and heading directly toward the
airport when I was missing the calls.
Also, unrelated, I noticed that if I am on autopilot, (TruTrak Digiflight II
GPSVG) that the autopilot goes haywire when the radio transmits. I have
heard of this problem on the internet but have not looked up what may be
causing it. Maybe you know off the top of your head??
Thanks for all you guys help!
Bill B
| [b]
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bbradburry(at)bellsouth.n Guest
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Posted: Sun May 13, 2012 11:55 am Post subject: Intermittent no radio reception |
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Ed,
I don’t think so. I didn’t change it between the works and don’t work phases…??
Bill
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Ed Holyoke
Sent: Sunday, May 13, 2012 12:37 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: Intermittent no radio reception
Squelch set too high?
Ed Holyoke
On 5/12/2012 9:15 AM, Bill Bradburry wrote: Quote: | --> AeroElectric-List message posted by: "Bill Bradburry" <bbradburry(at)bellsouth.net> I had a problem with my radio reception today and I am not certain where tolook for the cause. I was flying and the radio was working fine. I waslistening to Approach while I flew around and I could hear them fine. Idecide to land, so I dialed in ATIS. I didn't get anything. I noticed thatI didn't have the "RX" showing on the radio. At the time I was about 25miles away and 2K feet. I thought maybe I was too low and far away,although I had been listening to Approach when I dialed in ATIS. As I gotcloser, I climbed a little and suddenly I could hear them so I didn't think | 0123456789 Quote: | I had a problem with my radio reception today and I am not certain where to | 0 Quote: | I had a problem with my radio reception today and I am not certain where to | 1 Quote: | I had a problem with my radio reception today and I am not certain where to | 2 Quote: | I had a problem with my radio reception today and I am not certain where to | 3 Quote: | I had a problem with my radio reception today and I am not certain where to | 4 Quote: | I had a problem with my radio reception today and I am not certain where to | 5 Quote: | I had a problem with my radio reception today and I am not certain where to | 6 Quote: | I had a problem with my radio reception today and I am not certain where to | 7 Quote: | I had a problem with my radio reception today and I am not certain where to | 8 Quote: | I had a problem with my radio reception today and I am not certain where to | 9 Quote: | look for the cause. I was flying and the radio was working fine. I was | 0 Quote: | look for the cause. I was flying and the radio was working fine. I was | 1 Quote: | look for the cause. I was flying and the radio was working fine. I was | 2 Quote: | look for the cause. I was flying and the radio was working fine. I was | 3 Quote: | look for the cause. I was flying and the radio was working fine. I was | 4 Quote: | look for the cause. I was flying and the radio was working fine. I was | 5 Quote: | look for the cause. I was flying and the radio was working fine. I was | 6 Quote: | look for the cause. I was flying and the radio was working fine. I was | 7 Quote: | look for the cause. I was flying and the radio was working fine. I was | 8 Quote: | look for the cause. I was flying and the radio was working fine. I was | 9 Quote: | listening to Approach while I flew around and I could hear them fine. I | 0 Quote: | listening to Approach while I flew around and I could hear them fine. I | 1 Quote: | listening to Approach while I flew around and I could hear them fine. I | 2 Quote: | listening to Approach while I flew around and I could hear them fine. I | 3 Quote: | listening to Approach while I flew around and I could hear them fine. I | 4 Quote: | listening to Approach while I flew around and I could hear them fine. I | 5 Quote: | listening to Approach while I flew around and I could hear them fine. I | 6 Quote: | listening to Approach while I flew around and I could hear them fine. I | 7 Quote: | listening to Approach while I flew around and I could hear them fine. I | 8 Quote: | listening to Approach while I flew around and I could hear them fine. I | 9 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 0 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 1 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 2 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 3 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 4 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 5 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 6 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 7 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 8 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 9 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 0 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 1 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 2 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 3 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 4 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 5 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 6 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 7 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 8 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 9 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 0 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 1 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 2 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 3 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 4 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 5 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 6 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 7 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 8 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 9 Quote: | although I had been listening to Approach when I dialed in ATIS. As I got | 0 Quote: | although I had been listening to Approach when I dialed in ATIS. As I got | 1
[quote][b]
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skywagon
Joined: 11 Feb 2006 Posts: 184
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Posted: Sun May 13, 2012 1:33 pm Post subject: Intermittent no radio reception |
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Ed,
...good suggestion..as if that has never happened to all of us.
Especially when the plane comes out of some work at an avionics shop.
[quote] ---
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henador_titzoff(at)yahoo. Guest
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Posted: Sun May 13, 2012 3:12 pm Post subject: Intermittent no radio reception |
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Bill,
I would follow Ed's advice, because it's a very easy fix if that's what's wrong. You never know who went into your hangar and decided to make zoom zoom noises.
Henador Titzoff
From: Bill Bradburry <bbradburry(at)bellsouth.net>
To: aeroelectric-list(at)matronics.com
Sent: Sunday, May 13, 2012 3:53 PM
Subject: RE: Intermittent no radio reception
Ed,
I don’t think so. I didn’t change it between the works and don’t work phases…??
Bill
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Ed Holyoke
Sent: Sunday, May 13, 2012 12:37 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: AeroElectric-List: Intermittent no radio reception
Squelch set too high?
Ed Holyoke
On 5/12/2012 9:15 AM, Bill Bradburry wrote:
Quote: | --> AeroElectric-List message posted by: "Bill Bradburry" <bbradburry(at)bellsouth.net> (bbradburry(at)bellsouth.net) I had a problem with my radio reception today and I am not certain where tolook for the cause. I was flying and the radio was working fine. I waslistening to Approach while I flew around and I could hear them fine.
Idecide to land, so I dialed in ATIS. I didn't get anything. I noticed thatI didn't have the "RX" showing on the radio. At the time I was about 25miles away and 2K feet. I thought maybe I was too low and far away,although I had been listening to Approach when I dialed in ATIS. As I gotcloser, I climbed a little and suddenly I could hear them so I didn't think | 0123456789 Quote: | I had a problem with my radio reception today and I am not certain where to | 0 Quote: | I had a problem with my radio reception today and I am not certain where to | 1 Quote: | I had a problem with my radio reception today and I am not certain where to | 2 Quote: | I had a problem with my radio reception today and I am not certain where to | 3 Quote: | I had a problem with my radio reception today and I am not certain where to | 4 Quote: | I had a problem with my radio reception today and I am not certain where to | 5 Quote: | I had a problem with my radio reception today and I am not certain where to | 6 Quote: | I had a problem with my radio reception today and I am not certain where to | 7 Quote: | I had a problem with my radio reception today and I am not certain where to | 8 Quote: | I had a problem with my radio reception today and I am not certain where to | 9 Quote: | look for the cause. I was flying and the radio was working fine. I was | 0 Quote: | look for the cause. I was flying and the radio was working fine. I was | 1 Quote: | look for the cause. I was flying and the radio was working fine. I was | 2 Quote: | look for the cause. I was flying and the radio was working fine. I was | 3 Quote: | look for the cause. I was flying and the radio was working fine. I was | 4 Quote: | look for the cause. I was flying and the radio was working fine. I was | 5 Quote: | look for the cause. I was flying and the radio was working fine. I was | 6 Quote: | look for the cause. I was flying and the radio was working fine. I was | 7 Quote: | look for the cause. I was flying and the radio was working fine. I was | 8 Quote: | look for the cause. I was flying and the radio was working fine. I was | 9 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 0 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 1 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 2 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 3 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 4 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 5 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 6 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 7 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 8 Quote: | listening to Approach while I flew around and I could hear them fine.
I | 9 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 0 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 1 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 2 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 3 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 4 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 5 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 6 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 7 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 8 Quote: | decide to land, so I dialed in ATIS. I didn't get anything. I noticed that | 9 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 0 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 1 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 2 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 3 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 4 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 5 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 6 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 7 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 8 Quote: | I didn't have the "RX" showing on the radio. At the time I was about 25 | 9 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 0 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 1 Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 2
Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 3
[quote][b]
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bakerocb
Joined: 15 Jan 2006 Posts: 727 Location: FAIRFAX VA
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Posted: Mon May 14, 2012 4:35 am Post subject: Intermittent no radio reception |
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5/14/2012
Hello Bill, You wrote: "I could try and move wires around to
see if I can duplicate the problem."
Or carry along another headset known to be good and plug it right while you
are having the problem.
I had a "reception" problem with an older model Lightspeed headset that I
fussed with for a time. Finally identified the headset as the cause. Sent
the headset off to Lightspeed. They fixed it and updated it both at no cost
to me -- great customer service.
'OC' Baker Says: "The best investment we can make is the time and effort to
gather and understand knowledge."
======================================================
Time: 06:21:43 AM PST US
From: "Bill Bradburry" <bbradburry(at)bellsouth.net>
Subject: RE: Intermittent no radio reception
OC,
No I don't know if the headset is the problem, but it is a Lightspeed Mach 1
that I have had for less than a year. I could try and move wires around to
see if I can duplicate the problem.
B2
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bicyclop(at)pacbell.net Guest
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Posted: Tue May 15, 2012 8:07 am Post subject: Intermittent no radio reception |
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Howdy Bill,
You don't have to change the squelch setting for the radio to suddenly start receiving. All you have to do is increase the signal strength. Flying closer or climbing could do it. If the squelch is set too high, it'd seem to you as if there was no transmission at all until the signal got strong enough to break through. If the radio has auto-squelch, that can only be reset by the shop, I think. On a radio with manual squelch, I adjust it till it will not quite break squelch with nobody transmitting. Then pretty much any signal at all will break it. I check it on every flight because conditions change. Only takes a second and I know that I'm not missing anything that I could actually hear.
I often use the squelch on my #2 radio to keep the noise down on ATIS until I have some open air and time to listen to it. I'll also set it higher than normal so that when I get close enough that the weak signal from ATIS can be understood, it breaks the squelch and reminds me to listen to it.
I hope your problem is as simple as that. Makes it easy to solve.
Pax,
Ed Holyoke
On 5/13/2012 12:53 PM, Bill Bradburry wrote: [quote] v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> st1\:*{behavior:url(#default#ieooui) } <![endif]--> <![endif]--> <![endif]-->
Ed,
I don’t think so. I didn’t change it between the works and don’t work phases…??
Bill
From: owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com) [mailto:owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com)] On Behalf Of Ed Holyoke
Sent: Sunday, May 13, 2012 12:37 PM
To: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)
Subject: Re: AeroElectric-List: Intermittent no radio reception
Squelch set too high?
Ed Holyoke
On 5/12/2012 9:15 AM, Bill Bradburry wrote: Quote: | --> AeroElectric-List message posted by: "Bill Bradburry" <bbradburry(at)bellsouth.net> (bbradburry(at)bellsouth.net) I had a problem with my radio reception today and I am not certain where tolook for the cause. I was flying and the radio was working fine. I waslistening to Approach while I flew around and I could hear them fine. Idecide to land, so I dialed in ATIS. I didn't get anything. I noticed thatI didn't have the "RX" showing on the radio. At the time I was about 25miles away and 2K feet. I thought maybe I was too low and far away,although I had been listening to Approach when I dialed in ATIS. 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Quote: | miles away and 2K feet. I thought maybe I was too low and far away, | 3 [b]
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