Yaesu FT-221

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The Yaesu FT-221 is a modular VHF 2M all mode (SSB, AM, CW and FM) amateur radio transceiver, built by the Yaesu Corporation in Japan during the 1970's.

Contents

[edit] Technical description

  • Frequency Range 144.0 MHz ~ 148.0 MHz
  • Emission: AM FM SSB (LSB and USB) and CW
  • Power Output:

The frequency is set by a 500KHz VFO being mixed with the product of a number of crystals and is displayed using a rotary display dial.

The top of the case is removed by opening 4 quick release fasteners, revealing a number of user adjustable trimmers and pots. The modular design of the FT-221, where removable circuit boards allowed radio hams to modify their FT-221 either by replacing specific components or even replacing the whole board [2]. One such replacement is the mutek replacement front end[3] board which improved the front-end sensitivity. The open format of the internal construction also allowed the transmit and receive cables to be brought outside the case to use a low-noise coaxial relay.

[edit] Other models

The FT221R is a model with repeater shift. The FT221RD also has a digital display.

[edit] References

  1. ^ http://pdf.textfiles.com/manuals/SCANNERS-S-Z/Yaesu-FT-221%20Instruction%20Manual.pdf Yaesu FT-221 Instruction manual
  2. ^ http://www.radiomods.co.nz/yaesu/yaesuft221.html Modifications for the Yaesu FT-221
  3. ^ http://www.ssbusa.com/mutek.html mutek replacement front end

[edit] External links

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