Re: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-22 Thread AD6XY - Mike
I agree an inhibit pin is a very good idea. One must always remember to connect it of course. The system needs to fail safe. QSK is not used above HF as much and a radio that automatically allows a delay is far safer than one that produces power immediately unless an inhibit line is used. If that

Re: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-22 Thread R. Kevin Stover
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 IMHO it all depends on how much development time and valuable flash memory these enhancements take. The K3 is marketed as an HF rig. I'd be willing to bet the vast majority of those in service are used as HF rigs and NOT as a VHF/UHF IF. The

RE: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-22 Thread Evert Bakker (PA2KW)
I agree an inhibit pin is a very good idea. Thanks a million for the developers for giving this inhibit possibility. This makes serious VHF high power applications possible. Don't remove this option please!! THANKS (waiting for my K3 as the IF stage for my VHF station) 73's, Evert PA2KW

[Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-21 Thread Fern Rivard
Hi Ian and the group: I would suggest that you fix/modernize your old amplier and leave the K3 as is! The problem is NOT with the K3 but rather your amplifier. Upgrade the darn linear with more modern faster switching relays and vacuum relays are not that expensive if you shop around for

Re: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-21 Thread AD6XY - Mike
This is a mots worrying post. I think it demonstrates considerable ignorance of the many and varied applications of the K3. There is so much more to life than HF. How do you suggest we speed up a waveguide relay to 10mS? Fern Rivard wrote: Hi Ian and the group: I would suggest

Re: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-21 Thread Brian Alsop
If I recall correctly earlier K3's failed the AMTOR -like mode turn around time from rx to tx and back. I believe that is about 15 ms. This was apparently fixed. The 10ms delay between PTT and RF helps it meet this. So if it is too slow, some group complains. If it is too fast others

Re: [Elecraft] Fix the old amplifier......leave the K3 alone!

2008-03-21 Thread K3KO
Have you tried the inhibit pin (pin 7) of the accessory connector? It will hold off rf output until set low. Those serious VHF/UHF/Microwave ops already probably have sequencers. This can just be a part of the sequencing. See page 19 of the manual. Early K3's apparently didn't meet the