With the Elecraft gear (starting with the K3), a sequencer can be
started with the KEYOUT output and RF held off by TX INHibit until the
sequencer completes.
Of course, there are other methods, but to my mind, that is the most
"automatic" method - you operate the transceiver as normal and it "just
happens".
73,
Don W3FPR
On 6/8/2018 7:46 PM, Bob McGraw K4TAX wrote:
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.
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