You can probably use the same idea as was posted here a week ago about simply using a 12v transformer for the heaters and use a voltage multiplier stack to get to 150 volts or so.
I'm going to build the 24v version and try it on an arc5 receiver. I like the simplicity of it.
The radio will work ok with reduced voltage if the ground is removed from the screen grid voltage divider and allowed to float higher.
I suspect the voltage divider design may be similar on the R508.
BTW, I tried running an ARC 5 with the modified screen divider on 24 volts plate and it worked-poorly. The radio received , but there wasn't enough power to produce good audio output levels.
On Saturday, April 29, 2023 at 12:55:34 PM EDT, <[email protected]> wrote:
Not much to dop to convert it, give it power, put a tuning crank on it, and a speaker, and you are good to go. N6CC has sufficient info on his website to get you going: n6cc.comm/type-12-am-aircraft-system/
Has anyone converted an R-508/ARC using the article in the June 1965 issue of 73 Magazine ?. I would like to get this old girl running so I can listen in on out local airport Automated weather transmissions.
Jeff N2LXM Amateur Radio Operator American Patriot Proud Father of Two US Marines