Electronics Forum => Electronic Video Blog => Topic started by: The Radio Shop on December 05, 2015, 09:40:13 PM
Title: #16 Boat anchor on my door step "National NC155"
Post by: The Radio Shop on December 05, 2015, 09:40:13 PM
In this video I found a National NC-155 sitting on my door step. The receiver is very dirty and shows a lot of signs of many years of abuse. Will it still work with out a lot of repair?
Lets find out.
https://www.youtube.com/watch?v=ORXsGghi_ss
The National NC-155 is a ham-bands-only receiver covering the 80, 40, 20, 15, 10 and 6 meter bands. Has BFO, product detector, three levels of selectivity (5, 3 and 0.6 KHz) and separate RF gain and volume controls. It is a somewhat cost-reduced version of the NC-270, leaving out the crystal calibrator and notch filter. Both radios use dual conversion. The first IF is 2215 KHz using an LC oscillator in the NC-155 and crystal oscillator in the NC-270. Second conversion for both is 230 KHz using a "Patented Ferrite Filter". Changing the coupling between the two halves of the filter provides the selectivity choices.
The NC-155 was introduced in 1961 at a price of $199.95. It was reviewed in QST magazine in July 1962. The matching NTS-3 speaker was an optional accessory. The NC-155 and its speaker both have the "flip-foot", a flip out stand for the front of the set to angle the desk-mounted receiver and speaker up toward the operator.
http://www.ohio.edu/people/postr/bapix/NC155.htm
Title: Re: #16 Boat anchor on my door step "National NC155"
Post by: The Radio Shop on December 07, 2015, 08:12:46 AM
A few pics
Title: Re: #16 Boat anchor on my door step "National NC155"
Post by: The Radio Shop on December 10, 2015, 05:56:23 PM
schematic
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