[Elecraft] K3 and JT65/WSPR

[Lance Collister, W7GJ]

Hello Jim,

Most of us EME types have sequencers, external preamps, and numerous old coaxial 
relays.  While the TX delay built into the K3 may be fine for its own switching, and 
even for modern QSK amplifiers, there is a great amount of relief knowing that WSJT 
will switch everything well ahead of the start of its full power, all-out, RF 
transmit cycle ;-)    VY 73, Lance


  On 7/19/2012 9:20 PM, Jim Brown wrote:
> On 7/19/2012 1:24 PM, Joe Subich, W4TV wrote:
>> You will have better results if you use a serial port or USB to serial
>> converter with a single transistor driver on the RTS line for PTT as
>> teh JT65 software switches the transmitter "on" one second before the
>> tones start to avoid clipping the initial tones or hot switching any
>> amplifier/preamplifier relays.
> Joe,
>
> Doesn't the K3's TXDELAY setting take care of that?  I'm SURE that it
> does for the power amp, and I'd be very surprised if it wasn't also
> implemented to protect its own relays.
>
> 73, Jim K9YC
>
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-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ)
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