If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Handheld problem in NORDO plane
Hey folks,
I just bought a Luscombe 8A and am launching tomorrow to fly it home. The problem is the handheld transceiver I'm using to communicate. It works fine on the ground. But as soon as I get 100-200 feet off the ground it gets overwhelmed with static, like the squelch is wide open. It's a Vertex VXA-300 attached to an external antenna. I' ve tried turning the squelch to max. I haven't checked whether it occurs on all frequencies because that didn't occur to me until I had put the plane back in the hangar. Any ideas what's going on here? All help is appreciated. Tailwinds and blue skies, Mike |
#2
|
|||
|
|||
Handheld problem in NORDO plane
|
#3
|
|||
|
|||
Handheld problem in NORDO plane
|
#4
|
|||
|
|||
Handheld problem in NORDO plane
*Only* when you hit a few hundred feet...or anytime the engine is running?
Personally I'd venture to take a guess that it's picking up electrical interference from an ignition component. |
#5
|
|||
|
|||
Handheld problem in NORDO plane
In article ,
Mark Morissette wrote: *Only* when you hit a few hundred feet...or anytime the engine is running? Personally I'd venture to take a guess that it's picking up electrical interference from an ignition component. I thought that too, but it doesn't make sense that it would start 100-200 feet AGL. If it is ignition, it will be present any time the engine is running. |
#6
|
|||
|
|||
Handheld problem in NORDO plane
|
#7
|
|||
|
|||
Handheld problem in NORDO plane
|
#8
|
|||
|
|||
Handheld problem in NORDO plane
john smith wrote: In article , Mark Morissette wrote: *Only* when you hit a few hundred feet...or anytime the engine is running? Personally I'd venture to take a guess that it's picking up electrical interference from an ignition component. I thought that too, but it doesn't make sense that it would start 100-200 feet AGL. If it is ignition, it will be present any time the engine is running. Airframe static? Isn't that what they have the static dissipation wires for? Just a WAG. |
#9
|
|||
|
|||
Handheld problem in NORDO plane
I thought that too, but it doesn't make sense that it would start
100-200 feet AGL. If it is ignition, it will be present any time the engine is running. Agreed, hence my query to double confirm that. I think someone else further down the thread may have nailed it - airframe static, perhaps. |
#10
|
|||
|
|||
Handheld problem in NORDO plane
Squelch is a "dumb" device on cheap radios. It just looks
at the total RF signal level, from any source. You said that the frequency was 122.7, which is a common frequency, at 200-300 feet AGL, you're getting your mags [which probably are not shielded on a NORDO aircraft], and all the hundreds of transmitters within 200 miles line of sight. Your hand held may also not be sensitive enough to reject the adjacent frequencies. "john smith" wrote in message ... | In article , | Mark Morissette wrote: | | *Only* when you hit a few hundred feet...or anytime the engine is running? | | Personally I'd venture to take a guess that it's picking up electrical | interference from an ignition component. | | I thought that too, but it doesn't make sense that it would start | 100-200 feet AGL. If it is ignition, it will be present any time the | engine is running. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Connecting handheld to intercom in NORDO plane | [email protected] | Owning | 2 | July 7th 06 02:57 PM |
aviation vhf handheld radio problem | pwm | Home Built | 3 | February 7th 06 02:03 PM |
rec.aviation.aerobatics FAQ | Dr. Guenther Eichhorn | Aerobatics | 0 | December 1st 03 06:27 AM |
rec.aviation.aerobatics FAQ | Dr. Guenther Eichhorn | Aerobatics | 0 | November 1st 03 06:27 AM |
rec.aviation.aerobatics FAQ | Dr. Guenther Eichhorn | Aerobatics | 0 | October 1st 03 07:27 AM |