I think you have this backwards: The "delay" is the delay before your
transmitter generates a signal, after keying the amplifier. The longer
you set it, the more firmly (and longer) switched your amplifier is.
WB2WIK
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
On Behalf Of WA3GIN
Sent: Wednesday, November 10, 2010 4:00 PM
To: AMPS
Subject: [Amps] RF Spike w/in SSB
OK,
Question. TS-480 and Alpha 87A.
When I key the 480 on SSB with MIC gain off I see a fast, momentary RF
spike on the Alpha peak reading watt meter.
I've heard that solid state transmitters do initially emit an RF pulse
when first keyed.
The 480 has delayed linear amp PTT relay closures, 10ms - 30ms.
I'm presuming that the 10ms delayed closure is allowing the Alpha to be
waiting for RF from the 480 and this is why I see the RF spike on the
Alpha. If I lengthen the relay delay to 30ms it may create a situation
where the Alpha has not yet switched, the 480 will then send the RF
pulse to the antenna as if the linear was in stand-by; the Alpha will no
longer see the spike. I suspect the second scenario is preferred but
would appreciate opinions.
Please answer direct.
Thanks,
dave
wa3gin@comcast.net
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