überarbeitet am 2.11.2010
Yaesu has been founded by a Japanese radio amateur and started with the
production of ham radio transmitters. After the ham band only receivers
FRDX400 and FR-101, Yaesu entered the market 1977 with it's FRG-7.
The so-called FRoG was a solid state triple conversion allwave receiver,
using Wadley - Loop - technology and a preselector, it sonn became a very
popular allround shortwave receiver and is still considered as an absolute classic.
After the succeeding FRG-700 with a digital frequency display, the
FRG-7700 with it's PLL synthesizer circuitry,
optional internal 12 station memories and the optional external antenna tuner,
active antenna and VHF-converter was a very popular and successful set, too.
The good relationship between price and performance was later found in the
FRG-8800 and the slightly smaller FRG-100. It is obvious,
that the manufacturer has it's roots in the amateur radio business, the
receiver configuration can adapted and Yaesu never followed the bad habits
of coupling reception mode - IF filter bandwidth - tuning step automatically
together, the choice is left to the listener.
(1976): triple conversion, Wadley loop circuitry, AM 500 kHz
- 29,9 MHz, linear analog dial, AM, SSB, preselector
(1977): triple conversion, AM 250 kHz - 29,9 MHz,
digital frequency readout 1 kHz, AM, SSB, preselector, clock/timer
(1981): double conversion, AM 150 kHz - 30 MHz,
digital frequency display 1 kHz, AM, SSB, FM-n, clock/timer,
optional 12 memories, VHF- converter,
aktive antenna FRA-7700, antenna tuner FRT-7700
(1985): double conversion, AM 150 kHz - 30 MHz,
digital frequency display 100 Hz, AM, SSB, FM-n, 12 memories,
direct frequency entry keypad, scanning functions, clock/timer
(1993): double conversion, AM 50 kHz - 30 MHz,
digital frequency display 10 Hz, AM, SSB, FM-n optional, 50
memories, optional external frequency keypad, noise