Re: Keying Relay Buffer Debate
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Hi Kent, ? I am having the same issue intermittent faulting BYPASS SWR and my SWR is totally fine. Drives me nuts. I didn’t know Palstar was aware of this issue. They didn’t tell me that. Seems its always on CW. FT8, RTTY, SSB is totally fine. I am direct to my Yaesu. No QSK mode here. It happens when Im solid down on the PTT and while sending CW, cuts out during the sending. ? Barry VE6UM ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Kent Trimble, K9ZTV
Sent: July 11, 2020 9:51 PM
To: [email protected]
Subject: Re: [la1k] Keying Relay Buffer Debate? Mike . . .
The tech told you correctly, especially if you are using RF-sensing to change bands.
But remember, the LA-1K is not a QSK amplifier.
If operating full CW break-in is what lies behind your question, then in order to prevent hot-switching and avoid deterioration of the amplifier's relays you would need an external electronic T/R switch, such as DX Connections QSK-2500 ().? But perhaps your question relates to something else.
The only issue I am having with my LA-1K at this point does not concern hot-switching or relay deterioration, but intermittent faulting to BYPASS SWR of which Palstar is aware and a solution is being worked on.? The QSK-2500 is not generating the spike (we don't think), because the faulting still occurs with the QSK-2500 removed.
Good idea about having this (or any) discussion about owner's problems.
73,
Kent? K9ZTV
Would like to get a discussion going on if it is necessary to use a Keying Relay Buffer when using the Palstar LA1K Amp. I called Palstar this week and talked with one of their technicians and told him I was planning on getting an LA1K amp in the near future.? I told him that I am using an Icom IC-7300. My question to the tech was do I need to use a Keying Buffer in between the LA1K and the IC-7300.
Palstar told me it wasn't necessary and that I just needed to use one RCA cable and connect it to the PTT connection. He also said to keep the transmit power on the exciter to 40 watts. Comments, suggestions greatly appreciated.
Mike.
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