Sorry to labour the point, but, how do you guarantee that? Is it a question
of operator training?
David
G3UNA
> Yes, we use foot switches on SSB. This has not been a problem for hot
> switching for us. There is a small delay from when PTT is actuated in the
> radio and when RF production starts, so we are all OK.
>
> 73,
> Tim K3LR
> http://www.k3lr.com
>
>
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of David Cutter
> Sent: Sunday, March 30, 2008 1:28 PM
> To: 'Amps'
> Subject: Re: [Amps] Relays
>
> Tim
>
> Do you ever use foot-operated PTT ? I am always a little suspicious that
> the brain gets the voice to start before the foot gets the switch to the
> floor. When ms count, the 11ms from brain to foot and then foot to floor
> could be a problem for hot switching.
>
> David
> G3UNA
>
>
>
>>I have been using single Kilovac HC-1 and Jennings RJ1A relays for input
>>and
>> output T/R switching on all of my single 8877 amplifiers for the past 25
>> years.
>>
>> Even in heavy contest operating, I have had no problems at 1500 watts
>> output
>> up through 50 MHz.
>>
>> 73!
>> Tim K3LR
>> http://www.k3lr.com
>> > W4HBM
>>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|