It works at 100W SSB with 10-20dB compression.
For CW at 20WPM you need to go down to 70W or so.
I've been testing the Gamma supply with my K3 on CW. It works very well at
95W down to about 15 WPM. I rarely send below 20WPM and at that speed, the
rig's full 100W can be expected. Even with
Paul
I'm always a little wary of this scheme since using it myself a while ago
and not getting the results I expected. I would call it a limiter not a
crowbar.
I'm guessing these supplies have a relatively high (compared to conventional
linear regulator) output resistance and when I've
output resistance to pull the output below the clamping level. Don't know
what fuse you are using: say it's an ordinary fast blow 20A, then you
will need 40A for 30s to blow it by which time the transient has long
gone. The clamping voltage also depends on the current drawn and could be
as
Is anyone using the HPS-1a with their K3?
73, Doug W7RDP
K3 1937
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
It works at 100W SSB with 10-20dB compression.
For CW at 20WPM you need to go down to 70W or so.
It would not be good for RTTY or MFSK or other 100% duty cycle modes
past 20W or so. Think of it as a 5A switching supply if you're usign
100% duty cycle.
Leigh/WA5ZNU
Is anyone using the HPS-1a
, 2008 3:48 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] HPS-1a Gamma Hybrid,Communications Power Supply
Is anyone using the HPS-1a with their K3?
73, Doug W7RDP
K3 1937
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must
I use one with my K3/10.
73
jim ab3cv
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
7 matches
Mail list logo
