At 12/5/2007 19:33, you wrote: >BTW, reflecting on a discussion about the Midland 13-509 radio for >repeater operation, these antennas are connected to a split apart 13-509, >built at the same time as the antennas. I know this is the kiss of death, >but other than a run away crystal oven (it gets very cold at 1500' in an >outdoor cabinet) the Midland repeater has had no failures after 25+ years >of service. We keep intending to modify a hi-band GE MVP, but as long as >the Midland keeps working, the project is low on the to-do list.
Ditto here. The system I maintain was built in the mid-70s by Bill Wood WB6FXJ (now W6FXJ) & hasn't had any problems with the RF hardware in over 30 years. The VHF Engineering IDer died last year - probably a dried-out electrolytic capacitor. I do want to replace it with a modified MVP only because the MVP is easier (for me) to maintain & interface with a multiport controller. I've received reports of problems with the front end helical filter response after modification (excessive passband ripple), so I've backed off until I get some free time to investigate this issue. Bob NO6B
