Oh yes, indeed. I just take a look to the website. It costs 300 Euro
which is not to much. The whole kit looks very high quality and the
functions are FB. Also the power ranges. Normally i want to build my own
equipment but here i may become weak :-)
Also the PA design looks very interesting to me. They say 14V/5A for
60W, i.e. about 85% efficiency. The FETs is use are ordinary TO220
devices. Looks all very interesting. I will take the idea of the
"current mode class D PA" and play arround with it...
For this power level and frequency, ferrite transformaers can be very
small, unusual when coming from 2200m :-)
73, Stefan/DK7FC
Am 30.05.2012 19:45, schrieb Warren Ziegler:
Uwe,
The Juma 500 is a FB little transmitter, lots of built-in features
(synthesizer, keyer, swr bridge, receive preselector, receive
converter) in a very small package. It is capable of more than 60W
out, I have run it with 15vdc (which is in-spec) and with a 30 ohm or
so antenna impedance you can get 100W out all day and all night with
no complaints.
73 Warren K2ORS
On Sun, May 27, 2012 at 3:39 AM, Uwe Wensauer<[email protected]> wrote:
What do You think about the JUMA TX500 TransmitterI
In my eyes a small Rig with 60 Watt and built in Converter.
By the way, have a look at the filters in use – easy to built an duplicate
Uwe, dk1kq
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