Jim: About 10-12 years ago I had frequent contacts with K5CX now (SK) in
Oklahoma, an excellent high speed CW operator. He had built a QSK system for
a 3-1000Z linear using a power rectifier as a PIN diode switch. I wanted to
know more about it so he sent me several pages of information including a
schematic. The diode used for the power switching was a 6A6. I believe that
I found it to be a Motorola device but my memory is rather hazy on that.
Can anyone help identify the 6A6 and maybe a modern equivalent? I believe
there was an article in Ham Radio about using a small power rectifier as a
PIN replacement in a VHF rig. Again, my memory is hazy on that. 73, Dan,
N5AR
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]On
Behalf Of Jim Kearman
Sent: Monday, March 06, 2006 1:10 PM
To: Amps
Subject: [Amps] Speaking of PIN T/R switches
I have it in mind to build a 400-W MOSFET amp for 80-40 and would be
interested in experimenting with PIN-diode T/R switching. I'm aware of the
problems with high VSWR but I can deal with them. But I can't find anything
in my 03 Handbook on the subject. I understand the 'how,' but would like to
know what available devices to use, and where to get small quantities.
Thanks.
73,
Jim, KR1S
http://kr1s.kearman.com/
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.1.375 / Virus Database: 268.1.2/274 - Release Date: 3/3/2006
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|