[Hallicrafters] SR-400 MODS

[James Liles]

Hi Chuck:

Bob Orwin was the chief engineer at Hallicrafters through the SR-2000/SR-400 
era.  He and his team were some of the most forward thinking people of the 
time although they were a bit of an anachronism as tubes had already given 
way to solid state technology.  Always admired the Hallicrafters team 
because they were not limited to placing their napkin on the lap, eating 
with one hand under the table, and pushing the soup spoon outward.  Kinda 
thought of them as rebel genius not stogy old guys.  The SR-2000/400/HA-20 
reflected their character.  The first and only 2000 watt desk top 
transceiver built and first with dual simultaneous receive using the HA-20.

If you wish to add the file, go to tech tips in the Hallicrafters reflector. 
There you will find an email address to send to.  Looking forward to viewing 
the content.

Kindest regards Jim K9AXN



------------------------------ ORIGINAL MESSAGE -------------------------

Message: 2
Date: Sun, 03 Apr 2011 17:09:52 -0700
From: KA6UUP <ka6uup at comcast.net>
Subject: Re: [Hallicrafters] SR 400A Mods
To: hallicrafters at mailman.qth.net
Message-ID: <4D990C50.60708 at comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Guys,
In the late eighties, I bought a SR 400 A with HA 20 out of the Ham
Trader Yellow Sheets. (Remember them?)
When I received it I discovered it had been thru the hands of Bob
Orwin.(W9YKA. I think. Can't read his handwriting) in 1986.
Formerly an engineer with Hallicrafters.
It had been "converted?" to be used as a CB xceiver!
The owner Jack Jasensky KD9NA, had sent it to Bob to be fixed.
There were a few improvements made by Bob and this radio is really
fantastic. The Rx, especially, is nice.
Quiet and very sensitive.
I received all the notes Bob had made on the repair, as well as  a two
page letter, an invoice for the repairs, and a note from
Jack KD9NA to Ron, the guy I bought it from. (Don't remember his last
name or call)
I have reproduced all this into a single file.
If someone could tell me how, I would upload it to the Hacrafters
Collectors site as well as here in the Files section,
so it can be downloaded.
I have been sitting on this info for too long now.
This thread on the SR 400A reminded me and I decided to get it copied
and uploaded before I forgot. Again.
73,
Chuck KA6UUP