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End Fed Half Wave Wire Antennas

Updated: 8/7/2022 – A work in progress End Fed Half Wave wire antennas must be great. Everyone is selling them! Meh. The antenna engineer’s axiom: You can have high efficiency […]

PRC-174 HF Manpack Radio Set

UPDATE: 7/23/2022 I recently obtained a veteran RT-936/PRC-174 HF manpack radio from a fellow Ham (Thanks!). These were made by Tadiran from a design clearly originating from Hughes Aircraft, makers […]

Mil Radio Ops at FOB COVID 2020

The following is a brief After Action Report on Military Radio training operations at Forward Operating Base COVID, July 2020. Scheduling difficulties required delaying from the June 2020 ARRL Field […]

TRC-77A HF CW Transceiver

UPDATED 1/16/2022 A friend recently gave me an RT-654A/TRC-77. Also known as the TRC-77A.  The RT-654(*) is the basic component of the “AN/TRC-77” set. (“TRC” = Transportable Radio Communications. The […]

Fast Patrol Torpedo Boats / PTF-17

PTF-17, PTF’s in general and Coastal River Division 21 Ops: Updated – 6/13/2022 A Work in Progress.First, a little background: Why PTF’s?  The Green Water Navy. Despite what several Keyboard […]

The PRC-47 HF SSB/CW/RATT Transceiver

Updated 7/25/22 Some notes regarding the Collins AN/PRC-47.  This radio was designed by Collins and produced by them but they also subcontracted with Bendix to produce additional sets. All Collins […]

AN/GRC-109 “Special Forces” Radio Set

UPDATED 7/18/2022:  My favorite “Black Radio” even with its few quirks. The AN/GRC-109, AKA the “GRC-109” and “ANGRY 109”. Probably the ultimate “SHTF Radio” for trained (or trainable) personnel.Some research, […]

The RS-6 Radio Set

UPDATED 12/29/21 Another favorite Black Radio is the RS-6 set. (RS-6 = Radio Station number 6 per Central Intelligence Agency nomenclature.) Some other sites go into the technical details of […]

PRC-25 Radio Set

UPDATED 1/22/2022 The AN/PRC-25 (AKA “Prick-25”) had a relatively short but very successful history before it was soon replaced by the incrementally-improved but nearly identical AN/PRC-77. In 1967 General Creighton […]

AN/GRC-9 Radio Set

Updated 2/15/2022: US Marines of a Tactical Air Control Party with the First Marine Division in combat at the Chosin Reservoir operating an AN/GRC-9 transmitter-receiver.  Hand cranked generator, cold weather, […]