[Repeater-Builder] MCS2000 intermittent transmit?

Howdy, Has anyone ever seen an intermittent transmit issue with an MCS2000? When I key up, it will key the transmitter for about one second then drop and then key up again and drop and then key up again until I let go of the PTT. I have tried using two differrent heads with the same issue and I

[Repeater-Builder] TKR-750 P/A Failures

Hi Group, Can anybody out there enlighten me on the power amp failures on the earlier Kenwood TKR-750 Repeaters? I recall that Kenwood was scrambling around changing these under warranty when the 750 was first released. I have just removed one from service that was only pushing 15 Watts @ 7

Re: [Repeater-Builder] 900Mhz MSF5000 Power Control Shut Down

First thing I'd do is pull the Uniboard and squirt some contact cleaner into the power control pot, then turn it back and forth a dozen times to clean it. Then squirt some into all the connectors between the Uniboard and the pins in the RF tray. Put the Uniboard back and repeat the cleaning

Re: [Repeater-Builder] TKR-750 P/A Failures

Gareth, Email me off the list with the serial number and i will see if we can get it covered under warranty for you. Mike -- Original message -- From: Gareth Bennett [EMAIL PROTECTED] Hi Group, Can anybody out there enlighten me on the power amp failures on the

[Repeater-Builder] Re: Amateur Radio Grade Equipment

--- In Repeater-Builder@yahoogroups.com, Bob Dengler [EMAIL PROTECTED] wrote: I feel the same way, except that in most cases commercial equipment is not an option for me. I need VFO mode, which the commercial radios just won't do. Being locked into a couple dozen channels isn't my idea

RE: [Repeater-Builder] TKR-750 P/A Failures

Gareth, Your statement about the receive sensitivity caught my eye. I have to wonder: Was the front end of your repeater's receiver ever aligned for optimum sensitivity on your RX channel? Of the several TKR-750 repeaters I have worked on over the years, only one of them was properly adjusted

Re: [Repeater-Builder] TKR-750 P/A Failures

At 04:09 AM 3/18/2007, you wrote: Hi Group, Can anybody out there enlighten me on the power amp failures on the earlier Kenwood TKR-750 Repeaters? I recall that Kenwood was scrambling around changing these under warranty when the 750 was first released. I have just removed one from

RE: [Repeater-Builder] MCS2000 intermittent transmit?

Have you checked for proper primary power connections. Sounds like a voltage drop problem. Poor power connections or shorted PA? Jeff -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike Lyon Sent: Sunday, March 18, 2007 12:15 AM To:

Re: [Repeater-Builder] MCS2000 intermittent transmit?

At 12:14 AM 03/18/07, you wrote: Howdy, Has anyone ever seen an intermittent transmit issue with an MCS2000? When I key up, it will key the transmitter for about one second then drop and then key up again and drop and then key up again until I let go of the PTT. I have tried using two differrent

RE: [Repeater-Builder] TKR-750 P/A Failures

Absolutely correct Eric. The TKR-750 comes factory tuned for wideband base station operation. The TKR-750 does NOT like anything but a good 50ohm load. The transmitter will go spurious. I have never had a problem with a version 1 or 2 with a properly matched transmit path. Maybe just luck. I have

RE: [Repeater-Builder] Coax for cabinet and for feedline - other than hardline

-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- [EMAIL PROTECTED] On Behalf Of George Henry Sent: Saturday, March 17, 2007 1:10 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Coax for cabinet and for feedline - other than

RE: [Repeater-Builder] TKR-750 P/A Failures

Jeff, You bring up an important point. While my previous post was about tuning the receiver, it is always necessary to avoid either overloading, overheating, or mismatching the PA in the TKR-x50 or in any other radio. That's why I put at least a single ferrite isolator at the TX output to