These 2 diodes are on the 14 mhz path, not the 50 mhz path.
Carl Moreschi N4PY
121 Little Bell Drive
Bell Mountain
Hays, NC 28635
----- Original Message -----
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
To: <davidcuttler@yahoo.com>; "Discussion of Ten-Tec Equipment"
<tentec@contesting.com>
Sent: Wednesday, January 14, 2009 12:58 PM
Subject: Re: [TenTec] 1208 Transverter
On Wed, 2009-01-14 at 07:55 -0800, David Cuttler wrote:
So what will the operational difference be if I replace the "real" pin
diode with one of the other types like the 1N4007?
There will greater intermod both receive and transmit with the 1N4007
over the true PIN diode, and more than that with the 1N4148.
I know I've seen an article on the topic, probably in VHF
Communications. Found it in the index:
1994/1 "Intermodulation Properties of Switching Diodes" by Dr Ing Jochen
Jirmann, DB1NV, pages 12 - 18. Last year that article was probably
available on-line, today I think it isn't but the publisher will sell
back issues.
It might be at:
http://homepages.ihug.co.nz/~jaking/TS-940_02.htm#_Toc155846465, or
might not. Yup there are scans of the article, it will load slowly
at the end of a long web page.
73, Jerry, K0CQ
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