QST--9/85, and 10/80 have articles ... and here's 3 URLs to peer at ... 73,
Mark ..AA6DX
http://antenna.ece.vt.edu/~n4gu/QSK/N4GU_QSK_amplifier_modification_page.html
http://www.vcnet.com/measures/QSK922.html
http://ameritron.com/ameritron/man/pdf/QSK-5PCI.pdf
----- Original Message -----
From: "Brian Carling" <bcarling@cfl.rr.com>
To: <bcarling@cfl.rr.com>; "AMPS" <amps@contesting.com>
Sent: Friday, May 16, 2003 1:35 AM
Subject: Re: [Amps] QSK-5 and QSK-1500 etc.
Great - do you have any articles and/or schematics?
Thanks - Brian
On 15 May 2003 at 5:50, 2 wrote:
> >Regarding PIN DIODE QSK devices...
> >
> >Does anyone have any old articles on how to build such devices?
> >
> >I occasionally see that Design Electronics QSK-1500 unit. Are they
> >any good?
> >
> >I would like to go QSK on a small ampifier but can't see spending
> >$350.00 for the privilege (grin!)
> >
> ? It can be done for c. $60 using high-speed relays and an
> opto-isolator.
|