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Old 21st Dec 2018, 4:51 pm   #3
TonyDuell
Dekatron
 
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 5,188
Default Re: Trio 9R-59 Shortwave Receiver

It's the original 9R-59 (no suffix letters).

When I got it, somebody had bolted a speaker to the back (screws through the cooling slits, so no real case damage. I removed it, I like to keep things reasonably original. For testing it, I used an little PC-type speaker unit (no internal amplifier) that I bought in a charity shop. Quite useful for jobs like this.

I've taken some before/after photos, I'll try to upload them sometime but probably not until the new year.

As to the design of the set, it's a bit better than a domestic set with SW bands, it does have separate local oscillator and mixer valves, it has a BFO/Qmultiplier. But just a simple diode detector. And no HT voltage stabiliser. I feel it's a reasonable SW 'broadcast' set but not really a communications receiver. On the other hand it was cheap and fun to restore and I like taking on 'wrecks' and getting them back to rights.
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