My experience has been small particles of dust collect on the RCV side
of the T/R relay (that's why his RCV sigs drop). Just a little cleaning
with a piece of bond paper does the job.
73, Dick, W1KSZ
On Fri, Jan 31, 2014 at 8:45 AM, Karel <kebenstr@bmts.com> wrote:
> Fern,
> good point, it might work if the contact damage is not bad, but if they
> are badly pitted, very smooth contact file may be needed. Just go easy on
> the silver plating. Ler us know if it worked.
> Karel, VA3KO
>
> ----- Original Message ----- From: "Fern" <crc@cyberlink.bc.ca>
> To: "Karel" <kebenstr@bmts.com>; "Ken Asmus" <ken.asmus@gmail.com>; <
> amps@contesting.com>
> Sent: Friday, January 31, 2014 9:49 AM
> Subject: Re: [Amps] AL-1200 T/R problem
>
>
> My boss used to say "use a $50 bill to burnish the contacts" Fern
>>
>> ----- Original Message ----- From: "Karel" <kebenstr@bmts.com>
>> To: "Ken Asmus" <ken.asmus@gmail.com>; <amps@contesting.com>
>> Sent: Friday, January 31, 2014 6:44 AM
>> Subject: Re: [Amps] AL-1200 T/R problem
>>
>>
>> Hi Ken,
>>> just of the top of my head and I am sure there may be many other reasons,
>>>
>>> I would first look at the relay and tried to clean the contacts. There
>>> are contact cleaning files, but perhaps contact cleaner spray might be
>>> tried first.
>>> 73 and good luck,
>>> Karel, VA3KO
>>>
>>> ----- Original Message ----- From: "Ken Asmus" <ken.asmus@gmail.com>
>>> To: <amps@contesting.com>
>>> Sent: Friday, January 31, 2014 8:37 AM
>>> Subject: [Amps] AL-1200 T/R problem
>>>
>>>
>>> My AL-1200 has developed a T/R switching issue. In about 5 out of 10
>>>> transmissions the receive does not fully come back after releasing the
>>>> PTT,
>>>> A click of the mike button or a dot on the paddle brings the receive
>>>> back.
>>>>
>>>> Any suggestions where to strat lookiong to clear this problem?
>>>>
>>>> Thanks and 73,
>>>> Ken VA3KA
>>>> _______________________________________________
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>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>
>>>
>>> _______________________________________________
>>> Amps mailing list
>>> Amps@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
>>
>>
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