Jordan, Are you duplexing the radio to make a remote receiver with a UHF link, something like that? Are you sure you have made all the mods? How close is the transmit to the receive frequency if duplexing.
You do need to make that mod, if it's the UHF version you need to shield the bottom of the driver or predriver transistor, can't remember for sure but think it's the driver. I build mine out of brass shim-stock that's about 1/64 inch thick, there are several points around the transistor to fold over the corners to solder to ground. Place a piece of fish paper, the old plastic coated hard paper between the shield and the foil so it does not short out. Without the shield there is a slight amount of desense you have to contend with, with the shield it goes away and you can turn the transmitter up all the way if you want to with no problems. With that said, I have not tried to duplex a VHF PPL 6050. I need to try that! Paul -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of twoway_tech Sent: Monday, February 19, 2007 9:37 AM To: [email protected] Subject: [Repeater-Builder] Re: Johnson PPL 6060 manual needed Well, Speaking of EFJ PPLs, has anyone accually performed the repeater mods that are descibed on the repeater builder page? I have done one radio, but I am getting RF into the receiver. Jim Sharp (the author) mentions putting a shield around Q1, but the transistors are not labeled that way. I don't really see any EASY way to install any shield that would do much good due to the trace layout on the board. By-the-way, I tried to contact Jim Sharp and had no luck. Anyway, I am trying to use one of these radios for a remote receiver on 448.325RX and 433.050TX (radio tuned up fine). When the radio keys up, I get a squealing noise. Even when there is just squelch noise and no RX signal. It sounds like RF to me. If anyone has hints of ideas, let me know. Also I want to thanks Eric for the manual posting! -Jordan --- In [email protected], "Paul Finch" <[EMAIL PROTECTED]> wrote: > > George, > > The PPL series radios are very good as well as being easy to work on. You > can almost trace the signal path without a schematic even without > experience, I do but I worked on them when they first came out in the late > 70's early 80's. You can do a lot with these little radios. > > Paul > > > > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon > Sent: Saturday, February 17, 2007 5:10 PM > To: [email protected] > Subject: RE: [Repeater-Builder] Johnson PPL 6060 manual needed > > George, > > By an amazing coincidence, I am just now scanning a Johnson PPL-6060 Service > Manual into PDF for posting on the RBTIP. I can send you the same file this > evening. Some PPL-6060 info is already available here: > > <www.repeater-builder.com/johnson/index.html> > > 73, Eric Lemmon WB6FLY > > > > > -----Original Message----- > From: [email protected] > [mailto:[EMAIL PROTECTED] On Behalf Of George Henry > Sent: Saturday, February 17, 2007 2:08 PM > To: [email protected] > Subject: [Repeater-Builder] Johnson PPL 6060 manual needed > > Just picked up a bunch of these on eBay, 2 of which supposedly need > repair.... Anybody got a manual I can copy & return, or buy outright? > > George, KA3HSW / WQGJ413 > > > > > > > > Yahoo! Groups Links > > > > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.441 / Virus Database: 268.18.1/690 - Release Date: 2/16/2007 > 2:25 PM > > > -- > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.441 / Virus Database: 268.18.1/690 - Release Date: 2/16/2007 > 2:25 PM > > > > > <p class="style1">Visit <a href="http://www.ourphonelist.com";>OurPhonelist.com<br>It's free and you'll never lose track of a phone number again! </a></p> > Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/693 - Release Date: 2/19/2007 5:01 PM -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/693 - Release Date: 2/19/2007 5:01 PM <p class="style1">Visit <a href="http://www.ourphonelist.com";>OurPhonelist.com<br>It's free and you'll never lose track of a phone number again! </a></p> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
