If you are seeing 7 watts out, sounds like it is working. ? ?However:
Setting RV1 to the top of its range (5.4v?) could easily blow the IRF510. ? Just slowly bring it up to 100ma of drain current into the IRF510.
There is no zener, perhaps you are referring to the LM78L05 3 pin regulator? ?Should be 5.0 volts, within a tenth of a volt or so.
Jerry
On Fri, Feb 3, 2017 at 06:08 pm, Faris Howat wrote:
When transmitting into a dummy load and speaking (constant) into the Mic & adjusting RVI for 7watts out, the current is 1.1 amps. ?I can hear myself fine out of another receiver nearby.
- Voltage at Zener is 5.4v, voltage at IRF gate is 0 to 5.4v (when adjusting RV1)
Not sure if IRF-510 is slightly bad ??
?
