JUMA Amateur Radio Forum

Matti,

i did see the fan modification, and did this this modification two years ago ,
we had some contact about that.

And as for modifications, i did an other one. I a made an switch in the front of the amp as i can not easily reach the backside to switch it on/off.

Thank you very much, flashed the firmware into the PA1000 and are now waiting for ~30 degrees ambient temperature.

JUMA PA1000, Please a hysteresis in the fan routine, now that temps go up my amp sits idle at about 30 to 31 degree, this means the fan keeps switching on/off all the time, every second or so. The fan is always very nervous on the JUMA PA1000, personally i would like a more steady curve not changing ...

Hello, I still got a 9th order LPF for 70MHz capable of handling 600Watts lying around here from another project I wonder if its possible to make a few hundred watts with the Juma PA1000 setting the band to manual and selecting “AllMHz” and connect the LPF filter behind the JUMA PA-1000 ? Except for ...

Hello, I few months back i became the owner of JUMA PA-1000, To keep the amp in sync with my transceiver i wrote a small program that send banddata to the amp from Omnirig. It does this using the Elecraft protocol so select that in the amplifier, match the baud speed. you can switch bands on/off as ...