[ARC5] R-508/ARC Conversion

[J Mcvey]

 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, <scottjohnson1 at cox.net> 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/

Scott W7SVJ


-----Original Message-----
From: arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> On Behalf
Of n2lxm at juno.com
Sent: Saturday, April 29, 2023 09:09
To: arc5 at mailman.qth.net
Cc: milsurplus at mailman.qth.net
Subject: [ARC5] R-508/ARC Conversion

Greetings All,


        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

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