[NLRS] Sequencer

Thu, 27 Nov 2003 19:12:10 -0600

There have been at least a couple sequencers published in the ARRL handbook and CSVHF conference proceedings. Seems to me one is on W1GHZ's web page too.

Where a gaggle of comparators is used, a LM3815 linear array or log array led stack driver should put it all in one chip.

A PIC chip should do well also.

73, Jerry, K0CQ

---------- Original Message ----------------------------------
From: "Fast Eddie" <[email protected]>
Date:  Thu, 27 Nov 2003 20:04:36 -0500

>I am looking for one too!... Someone said there was circuit out there that
>used a PIC that worked well.. If anyone has seen this or any other reliable
>sequencers, let me know also!..
>
>Thanks and Happy Thanksgiving to all of you "south of the border:"
>
>73,   Eddie VE3KRP
>----- Original Message ----- 
>From: <[email protected]>
>To: <[email protected]>
>Sent: Thursday, November 27, 2003 3:02 PM
>Subject: [NLRS] Sequencer
>
>
>> Anyone aware of a simple design for a solid state sequencer ?  On
>transition
>> from receive to transmit the sequencer would delay the 12vdc to the
>amplifier
>> (while the T/R relay energized) and on transition from transmit to receive
>it
>> would then turn off the 12vdc to the amplifier before it de-energized the
>T/R
>> relay.  Delay times would be around 100ms.
>>
>> 73, Jon
>> W0ZQ
>>
>>
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