Design and Engineering Projects

“Canteen” Shortwave Radio Receiver

UPDATED 12/3/12  One recent project was building a replica of the “canteen radio” that was used by US Army personnel in the Japanese POW camp at Cabanatuan in the Philippines […]

GRC-109 / GRC-9 Battery Operated Power Supplies

UPDATED 2/9/17 Both the GRC-9 and GRC-109 used the BA-48 battery to power their respective receivers as an option.  When operated from the various dynamotor, vibrator or AC supplies, the […]

AN/GRC-109 / RS-1 Transmitter with VFO

UPDATED 21NOV14 Of course my favorite military Black Radio. The GRC-109 and its immediate predecessor the CIA’s RS-1. I was sitting here thinking about the cost of adding additional FT-243 […]

Field Expedient Antenna Systems

And other simple DIY Antenna Contraptions UPDATED 9/21/15 “If it’s stupid – but works – it isn’t stupid”  Murphy’s Laws of Combat A good field expedient antenna must first start […]

Ancient Heathkit Oscilloscope

Another project: I restored an ancient Heathkit O-8 scope. The design is based upon a 5CP1 CRT as used in various WWII Military radars and IFF sets; the tube was […]

Collins 618F-1A VHF Aircraft Transceiver

UPDATE 6/9/14 The latest project at N6CC is “restoring” a 1965 Collins 618F-1A VHF aircraft radio.  This radio was designed for light aircraft as an early frequency – synthesized radio […]

Field Power: Honda EX-1000 RF Noise Problems & Other Alternatives

UPDATED 2/1/17 Honda EX-1000 Generator: I have been running several field radio systems from a Honda EX-1000 generator for AC power. (Technically, it’s an Alternator, not a Generator and that […]

Ammo Box Radio !

UPDATED 3/14/16 Did you ever have a need for a particular piece of Military surplus equipment – only to find the Military never had such a device?  Much less “surplussed” […]

Solid State Dynamotor

UPDATED 1/2/13 When I got the A.R.C. Type 12 Radio Set working, I did not have a suitable dynamotor, let alone the correct one, a D-10A.  Anxious to get it […]

Other Field Expedients

A collection of field expedient stuff:  Improvise, Adapt, Overcome (Also see field expedient antennas in the Antennas sections) Field expedient keyer paddle: To go along with my quickie HF mobile […]