Codar CR 70A HF receiver refurbishment

Описание: #022

Codar CR-70A Restoration
The CR-70A is an AM communications receiver covering 540KHz to 30MHz, it also has a BFO enabling reception of CW and SSB signals.

Codar were a British company producing equipment for radio amateurs and short wave listeners, this example is the Mark 1 version with point to point wiring and a valve rectifier.
I believe the mark 2 had a circuit board and selenium rectifiers which replaced the EZ80 full wave rectifier valve.


Other YouTube channels you may like to view:
David Tipton - Restoration hints and tips from Australia, David does a first class job of restorations, electrically and cosmetically, well worth a watch!
   / @davidtipton101  

Mr Carlson’s Lab - Just excellent, very detailed and valuable advice and tips. From tubes (valves) to FPGA’s Paul really knows his stuff. I also have ‘lab envy’ he has so much excellent gear!
   / mrcarlsonslab  

W2AEW - Lots of excellent material to keep you enthralled.
   / w2aew  

DL7MAJ Stephan - Yet more excellent content.
   / @dl7majstefan753  

Adrian’s Digital Basement - Mostly computer and monitor restorations, Adrian is a fascinating source of hints and tips. I like his fault finding style too.
   / craig1black