[Yaesu] VL-1000Stock VS MODIFIED (HIGH POWER!!!)

2002年9月02日 20:49:30 -0500

Bob, Would you be willing to tackle another one, and what would it cost?
Doesnt hurt to ask. Thanks- John W9RPM
[email protected] wrote:
>> The MRF150 is available, and replacement/substitutes are also available.
> THOMPSON makes an interchangeable transistor, and there are still quite a few
> origional motorola MRF150s available from RFparts and others, and although
> MOTOROLA has ceased making the part, its manufacture has not stopped, it has
> been TRANSFERRED, anong with many of the other motorola high-power RF
> devices, to other manufacturers, who will continue to make the parts.--A
> stock QUADRA VL1000 amp will normall exceed 1,200 watts output if driven by
> about 80 watts and no ALC control is used, however if operated in this
> manner, distortion products are likely to be much higher than at 1000 watts
> or less. The unit will operate with Non-YAESU radios, although it is not
> anywhere as convenient, because you will have to generate a carrier and push
> the frequncy set button each time you change bands with a non-yaesu radio.
> If you use a YAESU radio, such as the FT-767, FT-757, FT-747, FT-890, FT-900,
> FT-100,FT-990, FT-1000, FT-1000D, FT-920, FT-1000MP, or the FT-1000MPMK-V,
> you will find it a great joy to use, with fully automatic selection of band
> and antenna, just as fast as you can push the button on the exciter!---I own
> what is probably the worlds ONLY modified, FULL-POWER VL-1000 QUADRA amp, my
> unit using 8 MRF151G transistors, and a modified, higher amperage (80 amperes
> max.) power supply. MY unit is now capable of CW or FM power outputs on HF
> EXCEEDING 2,500watts, and over 1,500watts on 6meters! It also sounds GREAT on
> AM PHONE at the 1,500 watt Peak power level, running a carrier of 375
> watts.--When operated at the USA legal power of 1,500 watts output, it never
> gets too hot to touch ANYWHERE inside, (Except for RF burn danger!) and
> operates with distortion levels as low as and in most cases LOWER THAN the
> stock unit.--The modifications involved were/are extensive AND expensive, but
> I am glad I tackled the job, and I LOVE IT!!!--73s Bob Curry,
> KC3VO--(Motorcycle Bob, 1,500watts motorcycle mobile)
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