Yaesu FRG-7

FRG-7 is the designation given to a HF communications receiver designed and built by Yaesu of Japan in the late 1970s.

Popularly known as the 'Frog Seven', it was one of the first commercial SWL receivers to utilise a triple-conversion superhet circuit with the 'Wadley Loop' system - although such an architecture had been seen in earlier tube radios manufactured for government use, most notably in the Racal RA-17L.

Owing to its 'Wadley Loop' circuitry, the FRG-7 has outstanding frequency stability and proved vastly superior to most other comparable radios of that time.

It has a frequency coverage of 500 kHz to 29.99 MHz. It is analogue tuned and it may be powered by D batteries or from mains electricity.

There are also FRG-7 'clones' in existence by Sommerkamp of Germany and Sears of the U.S. - these are Japanese produced sets with different brand names.

The Yaesu FRG-7 receiver has a large following of enthusiastic owners with many sets still in daily use worldwide.

ee also

* [http://www.yaesu.com Yaesu website]
* [http://www.geocities.com/yaesu_frg7/ FRG-7] ¨Greg's Radio Site¨ - with FRG-7 information and upgrades.