Hello Frank I have an earlyRanger that has a keyer added. Your right, it is a small chassie supported by three long standoff and is positioned above the operate switch. Since the transformer on the Ranger 1 did not have taps on the transformer for the negative voltage supply, there were abunch of 10 watt carbon resistors in a voltage divider to feed the 6al5 to generate the -40 volts for the keyer.
If you considering modifications, look at W3AM and WA2HLR changes. I have made those changes and am within a week or so of completing then. BTW, they also have a PTT circuit if you going AM Byron, W3WKR ----- Original Message ----- From: "Frank" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 01, 2005 2:19 AM Subject: [AMRadio] Early version Johnson Ranger I > Happy New year to all. > > I am in the process of restoring a Johnson Ranger I. I obtained part of the > manual and a schematic. That's when I noticed that two of the tubes were > "missing." The tubes are the 6AL5 bias tube and the 12AU7 keyer tube. > > My mystery was solved when I learned that the earliest version of the > Johnson Ranger I used cathode keying and omitted the circuits around the > 6AL5 and the 12AU7. I have since downloaded the schematic for this early > version Ranger from the bama web site. > > I would like to obtain a manual for this early version of the Ranger. I > have written W7FG to see if he has them available. So far, no answer. > > So can anybody help me out? Obviously I'd be happy to pay for the copying, > postage and the trouble. > > A second question is whether I should refit this old Ranger to bring it up > to the later version standard. Makes sense from an operational standpoint, > but what's the feeling about keeping this Ranger preserved as the early > version. > > Thanks and 73, > Frank, W7ND > > P.S. The serial # on my Ranger I is 622. > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected]
