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Hello everyone Question regarding a NXR810 repeater, What cables & software are needed to reprogram the repeater, also dose Kenwood use an interface box like the older Motorola rib box?.

Nice clean work there. I'll make a suggestion, and it's not specific to this project, but one of those "makes perfect sense" things that applies in many cases where you have high-level RF through

About 3 years back I had one DB4332-B UHF low pass filer but needed two, so decided to reverse engineer it and build a clone. The variable piston capacitors are Johanson 0.8 - 10Pf rated at 150V. Back

Not a problem with 100w into the cable and only 30w dissipated over 18ft of RG-142, and the connectors would be usually be heatsinked to a chassis of some sort anyway. Belden RG-142 is rated up to

Unlike the CATV world, where splitters are common and a splitter can have a variety of different drop/tap levels, splitters are not as frequently used, and when they are, the are usually referred to

That loss is dissipated as heat. You may have issues if the connectors are soldered on. Glenn WB4UIV -- ----------------------------------------------------------------------- Glenn Little

On Thu, Apr 3, 2025 at 06:49 PM, Matt wrote: > > > > A preselector is simply a band pass filter. A splitter is….. a splitter. > > > > > > > > Matt > > > > AL0R > > > > > > > >

Mike: Thank you for your emails. I agree it would be great if the capacitors at 850 Mhz were adjusted to something less than half of their range, I could just install the same size coils as in the

Once you know current and needed capacitance you could probably pad the originals with a fixed value silver mica.

For a similar performing filter the inductance and capacitance would be about double if you cut the frequency in half. Question is, will the original capacitors adjust to about double the capacitance

DB Products was bought out by Comscopealong time ago. Les KeeganN4LPK?

A preselector is simply a band pass filter. A splitter is….. a splitter. Matt AL0R Sent: Thursday, April 3, 2025 18:21 To: [email protected] Subject: Re: [repeater-builder] UHF

I am trying to determine the values of variable capacitors in DB Products Low Pass Filters to see if I can convert an 800 Mhz LPF that I bought in a flea market to a 450 Mhz LPF by just changing the

Sounds like a plan. I have a few other repeaters around that are GMRS or back ups. But if you want to continue this thread, you can email me on my QRZ email, WI9HF. Don't want to tie up the list. Chad

I fully agree, you would basically just be changing out labels with the name on it. I am just keeping an eye out for a good deal for a spare for our system. I do not want to buy another brand new

Yeah, I figured the TPLM would work good for my purposes here so I'm gonna hang onto that, but there really isn't any need to sell one to buy another one that's almost kind of silly. Chad Nelson

Not sure what you budget is, I think you said UHF, have you looked at Bridgecom website? They have new Henry Radio Manufacture Amps. I'll link the UHF for easy

Hi, I will hang onto that TPL amp at this point. I was trying to find another amp, but I am trading apples for apples at this point. Will take advice and keep the TPL. Thanks for your interest.

They did. Sent: Thursday, April 3, 2025 6:11 PM To: [email protected] Subject: Re: [repeater-builder] Where did db Products go? I think Comscope bought them.

You guys convinced me to keep the TPL, so it is going to be put in service with the TK851. Some things I have never tried before make me nervous to try, sounds like I have gotten