SWL of shortwave radios in AM, Medium wave and Long wave, with WEB SDR in Europe by SWL F14368 Frank near Paris France. Information about radio receivers for SWL, antennas, etc. Organizer of SWL contest 2023, 2024 and 2025. This is my blog number ONE. Please visit my 2 other blogs for radios listeners. Thank you. 73

lundi 19 juin 2023

History of YAESU shortwave receivers

 Sako Hasegawa, JA1MP, established Yaesu Musen Company during 1959  



His first SSB Equipment had been manufactured under the General Television Co Ltd name in 1957. Sako Hasegawa's ambition appears to have been to design and manufacture modern HF single sideband equipment for the amateur radio and SWL



1966




1965



1974 to 1978


This receiver is also referred to as the FR101 or FR-101 Digital. A good receiver. The used value is suppressed because of the light demand for non-general coverage receivers.  








1971-1974

Supplied coverage: 1.7-2.3, 3.5-4.1, 6.9-7.5, 13.9-1 4.5, 20.9-21 .5, 27.9-28.5 and 28.5-29 MHz. Optional positions: 26.9-27.5, 29.5-30.1 and 9.9-10.5 MHz. The FRdx400 provides better than 1 kHz dial accuracy. Matches the Fldx400 Transmitter. Requires a speaker. Variants: Model FRdx400SD includes the 6 and 2 meter converters built-in s399 new.




1976-1980

Ranges: .5-1.6, 1.6-4, 4-1 and 11-29.9 MHz. The Fine Tuning knob was not featured on early production. The analog linear dial yields 1 O kHz dial accuracy. An excellent, durable receiver. Perhaps the best used receiver value under $350



1977-1980

The digital display and indicator lamps may be turned off to conserve power. Two remote jacks provide NO (normally open) or NC (normally closed) connections. The timer is one event with on and off. This first Yaesu digital general coverage receiver did not live up to the performance level of its predecessor, the venerable FRG-7



1981-1984



1985-1993

Three AA cells are required for memory backup. A small internal slide switch selects AUTO or MANUAL scanning. In MANUAL mode the Squelch is ignored. Tuning steps may be set for 25 or 500 Hz. The CAT Jack along with the optional FIF Interface Unit, permits control via computer, including interrogation of the S-Meter.



1994-1997

Display resolution is selectable at 10 or 100 Hz. Many programmable features including: 10 Hz frequency display, memory sort, CW offset, continuous or noncontinuous back lighting, custom tuning steps, etc. Extremely stable, highly accurate and very sensitive. An excellent RTTY/FAX receiver. A third-party wired keypad, made in France by BEEi plugs directly into the CAT jack on the rear panel.






2000-2010




1999-2010

Frequency range:0.1-1300 MHz (Cellular blocked in the US)
AM (10 dB S/N)
0.1-5 MHz: 1.5 uV
5-370 MHz: 1 uV
AM / FM / WFM / SSB / CW

https://www.rigpix.com/yaesu/vr500.htm


Yaesu had initially been formed with the intention to develop and manufacture commercial and amateur radio transceivers for the Japanese market, but only five years after its formation the company had signed foreign sales agreements for export to Australia and Germany.

In Europe, the equipment was sold under the Yaesu brand and the Sommerkamp brand. In 1963 the Swiss firm Sommerkamp imported Yaesu equipment and sold it using their own brand.

Yaesu's line of equipment was first imported into the US by Spectronics, Inc. located in Signal Hill, California, in 1965. Yaesu became an important presence in the U.S. amateur radio market with the introduction and improvement of its very popular FT-101 line of equipment in the 1970s. In addition, transceiver manufacture was outsourced to Henry Radio in Los Angeles.

Sako Hasegawa (JA1MP) died in 1993. Following his death, Jun Hasegawa took over as managing director.

Yaesu Musen acquired the STANDARD radio equipment brand from Marantz Japan in 1998 and changed the company name to Vertex Standard Co., Ltd. (株式会社バーテックススタンダードKabushiki-gaisha Bātekkusu Sutandādo) in 2000. In 2007, Motorola announced its intention to purchase 80% of Vertex Standard and form a joint venture with Tokogiken (a privately held Japanese company controlled by Jun Hasegawa), which would hold the other 20%. This deal was completed in January 2008.[2] The joint venture was dissolved effective January 1, 2012. The Vertex Standard land mobile division operates as a wholly-owned subsidiary headquartered in Tokyo, Japan.[3] The Amateur Radio, Airband and Marine Radio business was transferred to the new company "Yaesu Musen".[4]







  • FR-50(B) (HF amateur band receiver)
  • FR-101 (HF amateur band receiver)
  • FRdx-400 (HF amateur band receiver)
  • FRdx-500 (HF amateur band receiver)
  • FRG-7 (HF communications receiver)
  • FRG-100 (HF communications receiver)
  • FRG-7000 (HF communications receiver)
  • FRG-7700 (HF communications receiver) – An HF receiver for the radio amateur and for the commercial market. It is a metal-cased receiver with a polymer front and it is suitable for reception in the AMFMCW and SSB modes. Its frequency coverage is from 150 kHz – 30.0 MHz continuously in 30 switchable band segments. Its frequency readout is available in a traditional analog (dish) mode as well as in a digital display mode.[6] Called a “budget receiver”, the FRG-7700 was released in 1978 as successor to the FRG-7000 and priced at approximately US$450. This type was in production until 1982.[7] The FRG-7700 is a superheterodyne type receiver going up to 48 MHz in the Intermediate Frequency trap, followed by a fully synthesized local oscillator in the 1st and 2nd mixer unit and thus creating a VFO that is reasonably stable after warm-up.[8][page needed][9][page needed]
  • FRG-8800 (HF communications receiver)
  • FRG-9600 (VHF/UHF receiver/scanner)
  • VR-120 (Hand-held wideband communications receiver)
  • VR-500 (Hand-held wideband communications receiver)
  • VR-5000 (Base wideband communications receiver)





HISTORY of ICOM Receivers



HISTORY of KENWOOD Receivers



Please visit the SONY radios history











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