I am using a 3 transistor version. It has worked well on my IC-735 since
1987.
It's housed in a "Sucrets" can along with the audio isolation transformers.
The In914 and 10 MFD capacitor from the Tx line to Ground provides the
negative bias for the Rx line.
Jim w5ifp@gvtc.com
On 1/16/2014 9:19 AM, Dave AA6YQ wrote:
I have used and recommended this circuit for many years; it works well:
<http://www.dxlabsuite.com/commander/interface.jpg>
73,
Dave, AA6YQ
-----Original Message-----
From: RTTY [mailto:rtty-bounces@contesting.com] On Behalf Of Jim W7RY
Sent: Thursday, January 16, 2014 12:39 AM
To: rtty@contesting.com
Subject: [RTTY] Icom CI-V with Transistors
Has anyone used the "transistor type" of serial to TTL (CI-V) converter? Had
any issues? I've built one with the MAX232 chip and
it works fine.
If anyone has had issues with a transistor type, please let me know.
73
Jim W7RY
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