[Repeater-Builder] Mitrek VHF wide band noise on TX

I have a vhf mitrek that has been split for repeater operation. It has work flawlessly until now. When the TX is unkeyed the transmitter will stay keyed for approx 10 seconds. During this time it generates a wide signal +-1Mhz centered on the TX frequency with full power out. Once 10

Re: [Repeater-Builder] Mitrek VHF wide band noise on TX

Sean, Most Class C VHF power amplifiers have DC voltage provided continuously, and the TX keying is performed earlier in the chain at the exciter or one of the drivers. What you describe is a very serious problem: self-oscillation that is generating spurious signals at full power. Since this

Re: [Repeater-Builder] Mitrek VHF wide band noise on TX

@yahoogroups.com Sent: Sunday, January 16, 2005 8:00 AM Subject: [Repeater-Builder] Mitrek VHF wide band noise on TX I have a vhf mitrek that has been split for repeater operation. It has work flawlessly until now. When the TX is unkeyed the transmitter will stay keyed for approx 10 seconds

Re: [Repeater-Builder] Mitrek VHF wide band noise on TX

maxjam_99 wrote: I have a vhf mitrek that has been split for repeater operation. It has work flawlessly until now. When the TX is unkeyed the transmitter will stay keyed for approx 10 seconds. During this time it generates a wide signal +-1Mhz centered on the TX frequency with full power out.