I am interested in building an amplifier that has its RF Deck and power supply remotely operated, like the Henry 3K Ultra. In fact, I would like to obtain a manual for the 3K Ultra. I have virtually
In that case, why not go for the real thing? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEBTOX:IT&item=300173154309&_trksid=p3984.cTODAY.m238.lVI It only has about 13 hours to go.
Yeah, I saw it on eBay and figure it's going to go for >$3000. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
I think this is the third time it's been on there. Previously it had a BIN of something like $3,200 or $3,400 and narry a nibble. This time he started out much lower and will probably get more than t
My modified 4K Ultra uses the 1200D7. Great tube. I just sold 2 of them for $500. They were pulls that were 80% output. _______________________________________________ Amps mailing list Amps@contesti
And, BTW. you can buy the new 3CX1500D7 direct from Eimac for $600 plus shipping last time I heard. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.
What's the difference between the D7 and the A7 (8877) which is running over a $1,000 with the imports on the order of $500 plus? Roger (K8RI) _______________________________________________ Amps ma
Hi Bob, IMO, The Henry 3K Ultra is a poor example for remote control to follow. I own one of these amplifiers, and it is a pain to tune - unless you use the presets. The problem is the archaic circui
Hi Bob, If you are going to have microprocessor controlled servos driving all the L's & C's then you are most of the way there. You can easily add auto tuning & loading. I have designs for ampfiliers
John, I have one of those Henry Ultra Amplifiers and I didn't think it was that difficult to tune up. I do have the pre-sets and that does make it pretty easy to tune as long as you are tuning to the
The presets are indeed, easy to use; once set up, and a dream to use. Pity there aren't 50 of them! Even with the suggested initial settings, there is no way (unless you are lucky) to consistently st
I would think the DC motors and relays could be replaced with stepper motors and the 741s could still be used as comparitors from the pots in a bridge. It should give the ability to adjust the speed