[Repeater-Builder] Re: Micor Pin Gunk
I haven't used Stabilant 22 so cannot speak to it's use, but have been using Deoxit for several years. It has been almost miraculous on many different items including Micor pins, squelch/ volume controls, and other items that had been contact cleaned many times with little effect. I am very pleased with it. Jon WA6KLB --- In Repeater-Builder@yahoogroups.com, w9srv tgundo2...@... wrote: Hi Guys! I am in the middle of rebuilding a receive site for one of the area repeaters and have come across some interesting Pin Gunk. I've been told that Motorola techs years ago used to apply some kind of goo to help with the connection on all the backplane pins, etc, but I don't know if this is what that is. This receive site has been developing some intermittant issues on several fronts, and maybe this explains them. The problem with this gunk is that is is non-conductive and a real bugger to clean off. DeOxit seems to work the best. I made this quick video last night showing this on the pins of the power control board. Here is the link to the video: http://www.youtube.com/watch?v=tmWumkQetdY Has anyone else ever come across this? Are there any other steps other than cleaning it off to ensure it will not be another problem in the future? Thanks! Tom W9SRV
[Repeater-Builder] 220 mhz EF Johnson ACSB Repeater
I just picked up a 220 mhz repeater with Johnson numbers on it, but Securicor labels on the modules. Where can I get a manual for it? I am mainly interested in the power amp. LX-RT23 Repeater 023-1220-045 Power amp 023-1220-055 Power Supply Thanks, Jon
[Repeater-Builder] Re: Arcom RC210 PTT LED on all the time
Hi, One way to help this is to use a reed relay or opto isolator to isolate the controller lead from the radio ptt. I am guessing that if you disconnect the ptt lead from the controller that the led goes out. The radio ptt circuitry is pulling the ptt lead low enough to draw current through the led. -Jon- --- In Repeater-Builder@yahoogroups.com, Glenn Maclean wa7...@... wrote: I am putting a 220 repeater together using an ICOM IC-RPP2210. The repeater is working except the PTT LED remains illuminated all the time. It goes ever so slightly brighter when the repeater is keyed up. I measure 1.56 volts dc at the PTT line between the controller and repeater un-keyed. I measure .67 volts dc when the repeater is keyed up. I have tried applying 12 volts to a 10k ohm resistor with the other end connected to the PTT line with no change. The PTT LED remains on. I even tried a 1K resistor in the same configuration. The PTT LED remains on. The repeater is transmitting and receiving just fine with the RC210 controller. Any suggestions? Thanks, Glenn
[Repeater-Builder] Re: 10 Volt regulator control from an master 2,i need a piece!!!!!!!!!
--- In Repeater-Builder@yahoogroups.com, gervais [EMAIL PROTECTED] wrote: Hi all, some month ago i sent a message about a part that i need on my 10 Volt regulator card from my master 2 repeater.I am sorry to say that i dont rememeber what anser i recieved,if you look at the Front panel of the card you will see a slide switch INTERCOM at her left there is an head screew which hold a transistor,a regualator,,i dont know but it is green/bleu but much more green anyway,, on it ,it is written 6375-1,,,under these number,,,274.i need to know what it is and what is his part number. Locally i dont have any GE supply radioshop so i am alone with it. it is an TO-220 style components can you help me again please?? thanks again,mostly apprecitated 73/s gervais ve2ckn Hi, this is a pnp transistor GE # 19A116375P1 that is driven by the ic to make the 10 volts. Any similar transistor rated at 40 volts and 3 amps or more should work. -Jon-
