Some of what Jiri describes could be ascribed to teething problems with a
new design. I've heard plenty of horror stories about amplifiers on the
market from all current manufacturers.
As I am interested in the HF-2500DX, the problems with tuning on 40 and 160
meters seem serious and fundamental. I would be interested in any comments
regarding good and bad points of this amp that this forum could provide.
Tnx W8KX
> 8.The PI tank is designed so that on 40m you can not tune it properly
there is not enough capacity on the antenna side of the PI, there is not a
position on the switch to add there some fix C. You might object it is a
question of the ant but if the Impedance we have on 7.045 is 50.3 Ohm+ 0j
and still you can not tune the AMP properly..... (the same on 160m - here
our ant does not have so great SWR but still well within 1:2 range - just
ther is the solution simple just add C). Solution in my case is simple -
never use the QRO on 40m.
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|