2M Tx/Rx Sequencer; External Tuner Pulser - Icom IC-746 Faq

WD7S wrote an article for the May 2000 QST entitled
"Automatic Amplifier Selection for the ICOM IC-746, IC-736 and IC-706MKII
Transceivers".
Hewitt, Paul, WD7S May, 2000, QST, p.33
K6XX has similar circuitry described on his WWW site at:
http://www.k6xx.com/radio/icbsciv.html
Another copy is at:
http://krasnodar.online.ru/hamradio/w7ds.htm
EI7BA has some related projects on his site at:
http://www.iol.ie/~bravo/remote.htm
There are also commercial solutions at:
http://www.rfapps.com/ibs-1.htm
http://www.qth.com/topten/bdecoder.htm
http://users.skynet.be/ON4AOI/banddecoder.shtml
Here is a CI-V based approach:
http://www.microham.com/product1.htm

2m TX/RX Sequencer

G3SEK outlines a complete TX/RX sequencer for handling more complicated
transceiver/transverter/amplifier hookups.
http://www.ifwtech.com/g3sek/dx-book/sequencer/

External Tuner Pulser

This is covered in the Antenna Section as well.
You can make the IC-746 think that there is an ATU out there with a dummy plug like that
available from W2ENY at:
http://members.fortunecity.com/w2eny/tenatuner/
Operation is similar to that for the other tuners, but transmission stops after an 8 second
timeout instead of by tuner acknowledgement. You can even build this yourself based on the
information at:
http://www.mods.dk/mods.php3?radio=icom&model=ic-706&selectid=1864
Don't mind that the info says its for the IC-706, all Icom rigs from this era use the same
circuitry/connector.
IC-746 FAQ
Page 88 of 113
2003-02-08