why pa voltage rise quickly from 30V to 50V?

dear my friend regards:

I have a eni rf generator oem2000,when I set up the power output to
30W,
why pa(power amplifier) voltage rise quickly from 30V to 50V?
It is abnormal.normally it should be 30V.

could someone kindly give me a hand?

thank you
best regards to you all

 

[Baz]

--

<mikeotp@gmail.com> wrote in message
news:1163832074.022218.3780@b28g2000cwb.googlegroups.com...

dear my friend regards:

I have a eni rf generator oem2000,when I set up the power output to
30W,
why pa(power amplifier) voltage rise quickly from 30V to 50V?
It is abnormal.normally it should be 30V.

could someone kindly give me a hand?

thank you
best regards to you all

Hi

I had a similar problem many years ago, where a 20 watt 146MHz transceiver,
when keyed to transmit, made the metered input 12volts rise quite
considerably, when used on a home made PSU. I assumed this was due to my
home made power supply's metering curcuit, or the regulator itself being
sensitive to the RF signal. I never worried about nor persued the cause,
just used a different PSU. By the way my PSU's max output voltage was only
about 18volts. I think the metering may have indictated the max output. It
was a long time ago!

Your effect may be due to a similar cause. That is RF getting into the PSU.
If it's affecting the PSU regulator you may be in risk of damaging the pa.

Regards
Barry