Mike, Durn it Mike, you let the cat out of the bag! I feel the price of the old radios going up now! Good thing about it? I have 5 brand new in the box PPL 6060's to work with plus several used ones! Paul
_____ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike - W5JR (f/k/a N5FL) Sent: Thursday, February 22, 2007 10:01 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Johnson PPL 6060 manual needed Posted by: "JOHN MACKEY" HYPERLINK "mailto:[EMAIL PROTECTED] Re%3A%20Johnson%20PPL%206060%20manual%20needed"[EMAIL PROTECTED] HYPERLINK "http://profiles.yahoo.com/jmackey_usa_net"jmackey_usa_net Wed Feb 21, 2007 8:26 pm (PST) are you saying a 45-470 MHz PPL6060 will work in the 420 MHz range? Absolutely!! I've moved many an EFJ to 420 operation - 558, 559, 6060. And some of them began life as T-Band units, 470-512 MHz. In the RX, use high side injection xtals. Matter of fact, use your existing 440 or 450 xtals to test with. The radio will hear a signal -21.4 MHz lower than your current freq. You may have to add a 1/4 turn to each coil in the multiplier helical. In the front end, use a 1/4 turn for 427-433 range and a half turn for the low end. We used regular house wire, 10 ga I think for the 558/559 units, formed around the proper sized drill bit. Tack solder it to the end of the existing coils. They tune right up. Sometimes, 1/4 inch longer screws is all it takes. If they are T-Band, use more coil. On the TX, some padding in parallel with caps in the multipliers is needed to bring them in range, especially if TX'ing low. It is easy to get a doubler acting like a tripler, so be sure to have a spectrum analyzer on hand to verify what freq the RF is on. Same is true for the amplifier stages. Two of the helicals in the 6060 casting are for TX and may need the coil extension trick like the RX side. They make good 420 full duplex link radios, similar to a modified MVP. - mike - w5jr Visit HYPERLINK "http://www.ourazle.com"OurAzle.com It's free and you can talk about anything in Azle you like! -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/697 - Release Date: 2/22/2007 11:55 AM -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/698 - Release Date: 2/23/2007 4:39 AM <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>
