Search found 3 matches
- Fri Jan 17, 2020 8:18 am
- Forum: 144 & 432 MHz
- Topic: MRF9120
- Replies: 0
- Views: 1295
MRF9120
Hi I got a 100w 2m amp from china this week and built it as per instructions I could set the bias OK without the FET in but now I have the FET in the bias is only 1.5 volts max and it doesen't draw any current. The dc resistance of the gate is 280 ohms and thats whey only 1.5 bias there is 470 ohm s...
- Thu Jan 16, 2020 11:09 pm
- Forum: Ancillary, Test Equipment, Components & Parts
- Topic: Cheap eBay 2m Amps
- Replies: 42
- Views: 24776
Re: Cheap eBay 2m Amps
Hi I bought one of these kit of parts I call it I followed GM4JTJ s description and without that I would have sent it back well got it assembled but the DC resistance of the gate of the FET is 180 ohms so cant set the bias to anymore than 1.5 volts and it wont draw any current I think the FET is cro...
- Tue Oct 22, 2019 7:23 am
- Forum: 144 & 432 MHz
- Topic: Mt Mobilin Beacon VK4
- Replies: 3
- Views: 2947
Mt Mobilin Beacon VK4
Any one heard it lately on 144.44