Fw: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz PA Conversi
John, I will take a look. Thanks a lot, Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, "WD7F - John in Tucson" <[EMAIL PROTECTED]> wrote: > > Forgot to addI never persued the SWR power reducing beyond the simple divider. Our converstion won't drop power all the way to zero when there's an SWR problem..yet. Once, the controller got confused and keyed the repeater over night at about 60 watts out without a problem. I think it's bullet proof in that respect. > > de WD7F > John in Tucson >
Fw: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz PA Conversi
> Forgot to addI never persued the SWR power reducing > beyond the simple divider. In your example it's probably more practical to detect high reflected power using a trailing device/circuit. And of course the external RF sample/detector device can/might be located before or after an in-line circulator/isolator. Of course the sampler would/could be setup to give both forward and reflected power levels. > Our converstion won't drop power all the way to zero when > there's an SWR problem..yet. Do you want zero power when the reflected power is not good but not yet a gross unacceptable amount? > Once, the controller got confused and keyed the repeater > over night at about 60 watts out without a problem. I have yet to see or hear about any of the whiz-bang external repeater controller that hasn't locked up at least one time. The lock to talk on-air carrier can make you famous... > I think it's bullet proof in that respect. > de WD7F > John in Tucson Reasonable proof you have enough heat sink and relative air movement with both the repeater amplifier and power supply sections. cheers, s.
