The 600's do work well.
The MRF-150 is a tried and true FET.
The only problem anybody ever complained about on the 1300 was the low
voltage (12V) power supply.
It had a ridiculous failure rate for about a year. That's been fixed.
The PS that ships with the 1300 is a switcher.
If I had one I'd run it at 1KW CW and SSB all day, 500W RTTY. I'd also
be saving $1K over the competition, the SPE Expert 1-KFA.
On 4/13/2014 6:59 PM, Roger wrote:
Do the 600s work well? If so, there is nothing wrong with using a
pair of them with dividers and combiners. It's a very good way to
double the power. Put 4 together and run them conservatively. It
might improve the IM. OTOH that's a lot of current out of a PS.
Most higher powered SS amps are 2 or 4 individual PP amps/sections
tied together with combiners. It works well with 2-meter amps There
used to be one that had 4 sections and ran 600 watts. I had one for a
while. The original owner talked me into selling it back to him. At
times I wish I'd kept it.
You can do the same with 2-meter amps. Just disable the keying in one
and let the remaining one key both. You do have to keep the phasing
such that the signal from one doesn't get back into the input of the
other and you end up with a high powered flip flop and the amps have
to be identical for the simplest setup.
R. Kevin Stover
Amps mailing list