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Could very well be the antenna. All the Diamonds use fragile disc caps that are easily toasted, not that I ever recommend using a Diamond for repeater use, but if you do, replace the disc caps with

Which model power supply do you have? If it's the AC input high power supply make sure you have the ferrite bead on the power cable. Also check between Onan and Motorola versions. I also like to

Turn off the UHF repeater, remove the Comet diplexer, jumper the VHF path and run the VHF repeater alone - during a cracklie period. Rules out a diplexer issue on the VHF side. Chuck

(This is not a bash-the-brand post. Truly interested in what others have determined.) Anyone done any deep analysis and performance testing of DR1XFRs and DR2X units? Commentary:? Seems like the

My bad.......this only happens on the VHF side. UHF is always rock solid Let's start with the RF equipment list, all in the same enclosed rack VHF (R2) Quantar 125 watt Telewave TPRD-1556

The heatsink grease under the high power pallet and circulator was ok in the VHF amplifier I just took apart. [email protected]> wrote:

Let's start with the RF equipment list, all in the same enclosed rack VHF (R2) Quantar 125 watt Telewave TPRD-1556 duplexer Kenwood NXR-1800 TPL 90 watt UHF PA Phelps-Dodge 526-4-1 duplexer Comet

What's the likelyhood of the original heat sink compound becoming dried out after all these years. Would the silver compound used for uP chips be worth the cost? As this is only for the brick the

I've been considering having a spare PA on hand. Maybe this will give me the impetus to do so and go through it before deploying it. Thanks for the info I'm still trying to wrap my head around my

Kevin, i will read your email tonight, i am back from the hospital. 73 thanks for the help gervais ve2ckn ________________________________ De : [email protected]

One thing I've noticed in the PAs that I've worked on is that Motorola did not put heat sink compound under the small brick intermediate power amplifiers. The surface metal under them didn't appear to

I have an R2 VHF station in 2-meters running at about 55w without issue. I also worked with these stations extensively in the public safety world on VHF, and never had issues running them in the 30-40

I told you Dave, I'll only buy it if the site comes with it! :) -- Chris Baldwin, CETSr. (KF6AJM) Trustee - MetroNET Cal. Intertie (KB3PX)

Are the 125 watt VHF PAs known to be particularly finicky as to power level versus creating spurs? I've been trying to track down a temperature-based crackly on my 2 meter machine (that goes away

I guess it is still a thing.?? Here in an APX user guide.... -- The Real RFI-EMI-GUY

At 800 MHz, something like HEAR CLEAR but known as Flutter Fighter by the engineer who designed it. There was an attempt to implement it on the Dekalb County Smartnet Simulcast system (The first one

I do, but it comes with a complete repeater and link system.....

I was finally able to program the rangr with raw hex data. I used deltaprg and the nrhcpxp software to get the values I needed and where they needed to be. Of course, neither one of them were correct

Anyone got an RBI-1 for sale? I need to do something with these Kenwood mobiles laying around this place. Chris/KF6AJM (callsign at aol dot com) -- Chris Baldwin, CETSr. (KF6AJM) Trustee - MetroNET

On other instrumentation -equipment I've encountered in 50 year of Field Engineering, a FAN fault and the fan is spinning, can mean the control circuitry has failed --and the fan can be in an always