[AMRadio] Valiant carrier...

[Rick]

Thanks, Jim. 120 watt carrier seems a lot more sensible to me considering
the plate voltage. I've managed to get it over 100 watts now, so I think
I'll be content with that and concentrate on the audio. All voltages are
correct and it loads properly on all but 80 meters where I know I have an
improper loading capacitor in there until I get the correct replacement. It
should be a real work horse when complete.
Rick / K5IAR

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jim Wilhite
Sent: Wednesday, June 15, 2011 2:42 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Valiant carrier...

Rick, Johnson put ~600 volts on the plate of the Valiant and Viking 
series radios which is for Continuous Carrier operation.  Then with 330 
Ma. you get input of 198 watts and the best output I have ever seen from 
a Valiant is ~120 watts, which is about 60%.

The DX 100 radio has just two 6146s and gave the same power output. 
They put about 800 volts on the final which is Intermittent service.  I 
believe you will find that 70% figure is under certain circumstance you 
may not have in the Johnson, or for that matter in the Heath.

Jim/W5JO