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Sold Mark S. Hallicrafters SP-44 Skyrider Panoramic Spectrum Display Scope in Excellent Condition S.N 5404

$249.99

Sold Mark S. Hallicrafters SP-44 Skyrider Panoramic Spectrum Display Scope in Excellent Condition S.N 5404

$249.99
Condition:
Used
Shipping:
$35.00 (Fixed shipping cost)
For International Shipping, Please contact me for a Quote before check out
Quantity:

Out of Stock

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Product Description

This Hallicrafters SP-44 Skyrider Panoramic Spectrum Display Scope, is in Excellent cosmetic Condition.

The unit powers up and the CRT does display the green line.

 It is a good bet it will need some electrical work and I am sure at least the electrolytic capacitors will need to be updated.

It is a great candidate for restoration because it is in such nice looking cosmetic shape.

 I am selling it as is as described for the family of a silent key

 

 

 The Skyrider Panoramic is a spectrum display which portrays visually the signals in a selected part of the radio spectrum. It is connected to a receiver's converter at the input of the first IF amplifier stage.

Connecting at a further point reduces the spectrum width. The SP-44 is designed for a receiver having an IF between 450 and 470 KHz.

The signal being listened to is at the center of the display. Signals nearby in frequency are also displayed as pips of varying shape to the left and right of center.

Pip shapes vary with the type of transmission. For example, the pips of SSB signals appear to come up from the base line and then drop back down again as words are spoken.

AM signals will increase in height with modulation and their sidebands are often visible on stronger signals. CW (code) signals appear and disappear as very narrow pips as the carrier is turned on and off when keyed for code.

 

There is a great information page for this unit, at the link below:

 

https://ai4fr.com/main/page_ham_radio_hallicrafters_sp44.html

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