That "blue stuff" that I use has what I call from the TV commercials for Dow bathroom cleaner, "scrubbing bubbles". It leaves a residue behind that keeps cleaning the contacts, and I think as well kind of seals them from the air. I use it on volume pots also. I have used it on contacts in GE stuff as well as the rows of contacts for the boards in micors. I used to work on railroad micor radios and the vibration and dirt were a pain. Started using this on the contacts, reduced my "headaches" a bunch. I always used it on the regency/wilson mic ptt swithes when they got intermittant. After i used it, never had any more problems.
Blue Stuff is made by Tech Spray Inc. in Amarillo, TX. www.techspray.com part# = 2411-12s Haven't bought any in a while, hope they haven't discontinued it. I figure they will since tv's haven't had tuners to clean in a few years. Mike ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ----- Original Message ----- From: Gran Clark To: [email protected] Sent: Thursday, October 30, 2008 6:54 PM Subject: Re: [Repeater-Builder] Mastr II internal connector reliability? Thanks Mike and Ken I must still have some reservation about cleaners because of the temporary job they did on TV tuners. I guess it is about time to throw out my tube of General Cement TUNERLUBE. I will check out your suggestions. Thanks for the help. Gran K6RIF At 08:43 AM 10/30/2008, you wrote: At 08:22 AM 10/30/2008, Gran Clark wrote: >If the pins are silver plated would moth balls be in >order? Remember the moth balls in the Centralab switch boxes to >prevent oxidation? <---I agree with Mike about the contact cleaner - I used to have some issues with one of my MastrII repeater connectors too until I cleaned 'em. Haven't had a problem in many years since. And on a side note - the contacts aren't silver plated, they're nickle plated. If they were silver then oxidation wouldn't be a problem as silver oxide is an excellent conductor of electricity! (why do you think they silver plate high current RF circuits?) Ken ---------------------------------------------------------- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net "We don't just make 'em. We use 'em!"
