Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Old October 26th 06, 02:50 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 322
Default National NC-120 manual

K3HVG ) writes:
Don, The manual can be found on the BAMA website. I have overhauled
two HQ-120's and found that, on both, 100% of the capacitors had to be
replaced, along with a few resistors. I have to say that after the
re-capping, they now function extremely well. The HQ-120 was used by
the Navy as the RBG-2 and, generally, had a large metal tag or screened
label with the Navy nomenclature on it. The Navy version also had some
ruggedized transformers in them. I'll also add that the HQ-120, and
most other equipment from this era, like to be run on 110v. At 120v or
higher, they can run very hot and cause stress. I use a 15A Variac on my
"vintage line voltage bus" to keep things cool and calm.
Good luck with your project.
de Jeep/K3HVG

But he's talking about a National NC-120, not a Hammarlund HQ-120. Maybe
he's mixed up about the receiver he has, but that seems a stretge.

Michael VE2BVW

Don wrote:
I am restoring a National NC-120 receiver. I understand this type was
used by the US Navy during World War 2. I need a repair manual with
test information such as tube socket voltages and a schematic with
component values. One similar to the ones I have for my BC-348 R and
Bendix RA-1B that has pictorial drawings of component placement and
arrangement of wiring would be great. Also any advice from anyone with
experience with this model will be appreciated. So far I have found the
power supply voltage to be about 220 DC and all the tubes test OK, but
some of the socket voltages seem wrong to me but I am not a radio tech.
The radio was working and just faded out.

Thanks
Don VE1DLT




  #2   Report Post  
Old October 26th 06, 05:27 PM posted to rec.radio.amateur.boatanchors
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 123
Default National NC-120 manual

Wooops..... Wrong radio!!!!

Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
National NC60 service info or service manual cheapone Boatanchors 0 November 24th 04 11:01 PM
National NC60 service info or service manual cheapone Boatanchors 0 November 24th 04 11:01 PM
FS: NOS Heathkit Manuals Dave Hollander Equipment 0 February 11th 04 05:11 AM
FS: Gonset, Lafayette, National, Heathkit. Military Stuff Dave Hollander Equipment 0 December 16th 03 11:33 PM
FS: Gonset, Lafayette, National, Heathkit. Military Stuff Dave Hollander Equipment 0 December 16th 03 11:33 PM


All times are GMT +1. The time now is 06:01 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004-2025 RadioBanter.
The comments are property of their posters.
 

About Us

"It's about Radio"

 

Copyright © 2017