[Elecraft] Default K3 transmit delay may be too short for slow QRO amplifiers

[Bob McGraw K4TAX]

 From experience, in an operation as you describe, a sequencer is almost 
mandatory to assure each item switches as it should and that proper 
feedback on that item to the sequencer to allow it to proceed to the 
next interval and switching.  I don't feel one can relay just on the 
radio to perform this function.  My sequenced EME station put the 
transceiver in the transmit mode as the last item in the timing of 
events.    I don't understand how one can expect a transceiver to supply 
multi sequenced events.

I've fried enough mast mounted preamps, coax relays and caused amp flash 
overs enough times before a proper timed sequencer was employed.   Legal 
limit power on 70 cm can really do nasty things.

73

Bob, K4TAX


On 6/8/2018 12:56 PM, Dimitry Borzenko wrote:
> Hi group.
> Please understand, this nice transceiver is used not only for HF. but 
> also for VHF,UHF and uppp.
> So, more TX DLY is needed!
> LNAs, polarization switches, PA and transverters in the transmission 
> line.
> Sequencer is nice device but if U press XMIT button - BIG BAGA BUM :(
> I hope Elecraft engineers will add additional  TX DLY.
>
> Tnx a lot.
>