I have been operating for many years a Yaesu FL7000 and FT1000 without any
problem at all, with so many protections never failed, at my job we use to
keep the transmitters from the Mediterranean Coastal Station, 6 commercial
solid state 1Kw amps connected 24H a day, only have problems with direct
lighting, all logic boards ( for remote control ) failed. The amps where
working all together, some times at the same time, 3 amps on the same
vertical antenna, on near frequencies separated with a high Q network and no
problems, of course Rx antennas and receivers in other place 80 Km away and
operators on the mainland.
73, Jaime.
*-----Mensaje original-----
*De: owner-amps@contesting.com [mailto:owner-amps@contesting.com]En
*nombre de Peter Chadwick
*Enviado el: Thursday, March 01, 2001 09:55
*Para: Matrosow Sergej; amps@contesting.com; 'Jaime P.Ullivarri'
*Asunto: RE: [AMPS] IC-PW1 Acom2000
*
*
*
*Jaime says:
*
*>it woud be a nice amp for Dxing with 90 min delay!
*
*Well, nice for me if the competition had to wait so long!
*
*I am old fashioned, and have been working in the semiconductor industry too
*long. As a result, I prefer tube amplifiers. One advantage of the
*Acom is that
*it meets the new ITU Radio Regulations on harmonics - I'm not sure
*if the ICOM
*does (-50dB for powers over 5 watts)
*
*Has anyone on the reflector any experience with solid state amps
*and lightning
*induced EMP damage?
*
*Another possible problem if you are to operate a multi tx contest
*is cross or
*intermodulation in the solid state PA which can be far worse than
*tube PAs -
*partially because of the SWR protection circuitry operating from
*pick up. Having
*said that, it appears that 9M0C and D68C haven't had any problems in that
*respect, but I don't know how much spacing they have between antennas.
*
*73
*
*Peter G3RZP
*
*
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*
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