Hi Peter:
The PT9790 may be hard to find. Using the MRF429 may be satisfactory.
Replace them in pairs. You can tell how well the pair match the
circuit by feeling the temperature rise of the terminating resistor
of the associated port in the output coupler.
If the isn't excessive temperature rise, you made the grade.
Regards, Merit W6NQ
--
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
|