Showing posts with label 6m amplifier. Show all posts
Showing posts with label 6m amplifier. Show all posts

18 May 2012

Soon QRV

Amplifier
Bias-board, heat-transformer, relays and low-voltage-regulaters


Displays
Softstart

RF-deck


Four-compartments

1 Apr 2012

6/10m PA

Progress..HV-sup done! RF-deck is on the way..

1 Mar 2012

Project "NAC" PA (10 and 6m)

A new project is born. I have started to build a 10 and 6 meters PA for use in NAC. This PA will be 230v AC and "portable". Tube will be a single GS35b and transformer 2,550 kVA,

 The biasbord for PA, using 57kOhms for cut-off, a zenerdiod 33V for class AB. A 2N3055 will be on a separate heatsink.

Paracit and coupling capacitor, 50Ohms and 14W. 6mm copper diameter is aprox 6cm.