40 - 50 watt amp

radioman · Post by **radioman** » Fri Sep 05, 2014 6:08 pm

40 - 50 watt amp, 12- 15volts.
mrf237 driving a 2n6084

teckniqs · Post by **teckniqs** » Fri Sep 05, 2014 11:58 pm

That looks like it's been built for the higher end of the band.

sharky · Post by **sharky** » Sat Sep 06, 2014 7:12 pm

teckniqs wrote:That looks like it's been built for the higher end of the band.

I agree - looks like something you'd use for 144, however i've seen that layout before on a LDMOS device, think it'll go all the way down to 8v.. Very neat - well done

teckniqs · Post by **teckniqs** » Sun Sep 07, 2014 5:39 am

The main PA stage does definitely, modified for band II.

radioman · Post by **radioman** » Fri Sep 12, 2014 3:45 pm

The main amp was on 144 mhz.
The pcb output coil track was cut and replaced with a 3 turn coil,
The base was replaced with different capacitance to bring it down to work on the top end of the broadcast band.

ir8 pir8 · Post by **ir8 pir8** » Fri Sep 12, 2014 4:36 pm

Good stuff, keep them pictures coming...

40 - 50 watt amp

40 - 50 watt amp

Re: 40 - 50 watt amp

Re: 40 - 50 watt amp

Re: 40 - 50 watt amp

Re: 40 - 50 watt amp

Re: 40 - 50 watt amp