[Hallicrafters] NC-173 and NC-183 National Receiver Comparisons

[Sandy W5TVW]

I never owned an NC-173, but did own an NC-183D.  The receiver was 
reasonably stable for a "general coverage" receiver.  It's performance was
good generally except for one glaring flaw:  the use of a "converter"
1st Mixer using the oscillator section of the 6BE6 pentagrid converter
tube.  It "pulled" in frequency with stronger signals which is quite
objectionable on SSB or CW service.
I never figured out "why" National did this instead of providing a
seperate HF oscillator stage like a 6C4 or whatever.  The circuit is 
basically that of the HRO-60 except for this and the dial system of course.

73,

Sandy W5TVW
----- Original Message ----- 
From: "Bob Scupp" <k5sep at yahoo.com>
To: <Hallicrafters at mailman.qth.net>
Cc: "carolew" <carolew at bellatlantic.net>
Sent: Sunday, January 29, 2006 4:40 PM
Subject: [Hallicrafters] NC-173 and NC-183 National Receiver Comparisons


| Joe-
| 
| I posted this to the National at mailman.qth.net thread
| for you.
| 
| 
| "Date: Sat, 28 Jan 2006 18:52:33 -0500 
|     
| 
| How do the Nationals (e.g., NC-173 and NC-183) rate in
| comparison to Hallicrafters and Hammarlunds of the
| same era? What Hallicrafters and Hammarlund models are
| comparable to the NC-173 and NC-183?
| 
| Joe Connor"
| 
| 
| Joe-
| 
| I am not familiar with comparisons with the National
| NC-173 and NC-183 with Hallicrafters and Hammarlund
| equivalent models. But perhaps someone here on the
| National thread on mailman.qth.net can help?
| 
| I suggest you subscribe to this National thread on
| mailman.qth.net. As stated previously, the posts and
| activity here are low but it is more appropriate to
| get your information here. Besides, this thread on
| National needs yours and anyone else's posts and
| support!
| 
| Thanks for asking and Best Wishes!
| 
| 
| 
| 73's, 
| 
| Bob K5SEP 
| Life Member QCWA and ARRL 
| Member - Antique Wireless Association 
| Life Member - New Mexico Radio Collectors Club
| 
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