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

[Don Wilhelm]

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.
>>
> 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to donwilh at embarqmail.com