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1. 05:45 AM - Re: Dual Comm Transmitter Problem (Noel Loveys)
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| Subject: | Dual Comm Transmitter Problem |
--> Avionics-List message posted by: "Noel Loveys" <noelloveys@yahoo.ca>
One last question .... What does the audio of the side tone sound like??
Noel
> -----Original Message-----
> From: owner-avionics-list-server@matronics.com
> [mailto:owner-avionics-list-server@matronics.com] On Behalf Of John
> Sent: Thursday, June 22, 2006 11:42 PM
> To: avionics-list@matronics.com
> Subject: Re: Avionics-List: Dual Comm Transmitter Problem
>
>
> --> Avionics-List message posted by: "John" <joplin1@charter.net>
>
> I am starting to get bogged down with technical stuff that I
> don't understand. I think my best solution now is to spend
> the $$ and take my aircraft to an Avionics Shop. I have
> printed out all of your comments and suggestions. They
> should be very helpful when I discuss my transmitter problems
> with avionics technicians. I will stay after them until they
> have considered all of the possibilities that you have mentioned.
>
> Actually, my radios are still useable ... just not as good as
> I'd like. I will refrain from asking for radio checks in the
> future because I know the answer will be "weak and scratchy".
> Instead, I will just press on as if I don't have a problem.
> I have found that all of the controlling agencies I deal with
> read me well enough so that they don't complain.
>
> Thanks again to all of you.
>
> John
>
> ----- Original Message -----
> From: Noel Loveys
> To: avionics-list@matronics.com
> Sent: Thursday, June 22, 2006 5:32 PM
> Subject: RE: Avionics-List: Dual Comm Transmitter Problem
>
>
> --> Avionics-List message posted by: "Noel Loveys"
> <noelloveys@yahoo.ca>
>
> Find some one with a beastie called a Bird Wattmeter. Read
> the forward
> power and then reverse the slug to read the reflected
> power. This will
> check the power amp of your transmitter at the same time as
> checking your
> antenna system.
>
> While you are at it ask if any one has a Cushman station
> analyzer. This
> will do much much more. Any one who has this equipment
> will know how to use
> it. If your radios are certified they may not want to go
> near them. Not
> because of lack of knowledge but because of legal implications.
>
> Noel
>
>
>
> > -----Original Message-----
> > From: owner-avionics-list-server@matronics.com
> > [mailto:owner-avionics-list-server@matronics.com] On Behalf
> > Of Hopperdhh@aol.com
> > Sent: Thursday, June 22, 2006 1:23 PM
> > To: avionics-list@matronics.com
> > Subject: Re: Avionics-List: Dual Comm Transmitter Problem
> >
> >
> > --> Avionics-List message posted by: Hopperdhh@aol.com
> >
> >
> >
> >
> > John,
> >
> > The MFJ-259B needs an SO-239 to BNC adapter and then perhaps
> > male-to-male or
> > female-to-female BNC connectors to allow it to connect to
> > your antenna
> > somehow. I have found that you can sometimes take a BNC and
> > butcher it up to
> > connect directly into the radio tray (after removing the
> > radio) to test the whole
> > feedline plus antenna.
> >
> > The 259B does not use the radio for the signal source to
> > measure VSWR, it
> > has its own signal generator and counter, so it does not go
> > inline like a
> > standard SWR meter. (VSWR and SWR are used interchangeably
> > here. Also the SWR
> > meter is sometimes called an SWR bridge -- same thing.) The
> > 259B only tests
> > the antenna and coax beyond where you connect it in. I
> > think you have already
> > tested the radio, so this way you can isolate the problem.
> >
> > Dan Hopper K9WEK
> > RV-7A
> >
> >
> > In a message dated 6/22/2006 12:47:29 A.M. Eastern
> Daylight Time,
> > joplin1@charter.net writes:
> >
> > I contacted a gentleman who has a 'ham' business in town.
> > He deals pretty
> > much with the shortwave spectrum, not the VHF. He told me
> > that he doesn't
> > have the MFJ-259B meter. But, he feels sure that I can
> > find someone in a
> > local club who does. He mentioned that the meter needs to
> > be inserted into the
> > feed line between the radio and the antenna and he suspects
> > adapters might be
> > required to do that. Before I start trying to find someone
> > with a MFJ-295B,
> > what should I know about inserting the meter into the feed
> > line? Remember, I
> > am Radio Illiterate. I just want to be sure that I can
> > provide the 'ham' with
> > the required adapters and any other information that he
> > might need. It is
> > possible that will have no experience with aircraft radios.
> >
> > Thanks,
> >
> > John Linman
> >
> >
> >
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