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KC9UMR

Ramblings of yet another nerd...

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Latest Post

The Venerable SB-22x Amplifier Anytone 578 with BT01 Remote Head Another RT Systems Software Update… Anytone 578 – Internal GPS Antenna Xiegu X6100
MMDVM and DMR Radio and Electronics

RT Systems’ Anytone 578 Software: Initial Impressions

Jun 16, 2022 Ken Cechura

Initial Thoughts: I bit the bullet and paid $25 for the RT systems software for my Anytone 578, because, well, the Anytone software is junk…. but it’s the same look…

Radio and Electronics

Astatic RD104 “Road Devil” Battery Eliminator Mod…for radios with power at the mic jack

Apr 26, 2022 Ken Cechura

With the sunspot cycle coming to a point of good higher frequency propagation, I put a 10 meter radio in the car.   Why not?  The President Lincoln II+ has some…

Radio and Electronics

SteppIR Antenna and Station Integration (Update)

Jan 24, 2022 Ken Cechura

Well, the original configuration (SteppIR controller passing commands between the radio and PW-1) worked… for a while. I suspect there was some collision or synchronization that fell out of timing…

Radio and Electronics

Mini1300 Antenna Analyzer: Initial Impressions

Jan 19, 2022 Ken Cechura

I’ll spare the reader yet another glowing review for the Mini1300 analyzer. No I won’t – I’m still going to spew my thoughts on this thing.   I picked one up…

Radio and Electronics

SteppIR Antenna thoughts

Nov 22, 2021 Ken Cechura

Background Last year, I acquired a SteppIR “SmallIR 80” antenna… This is their “SmallIR” 20 – 6 vertical, with an additional coil for 30/40/80 meters. I don’t know if it’s…

Radio and Electronics

Icom 7300 Front Panel Interface Box

Sep 23, 2021 Ken Cechura

I love the Icom 7300 – it has a TON of features. One of the intriguing features is the voice keyer – the radio has 8 memory slots, four of…

Radio and Electronics

Semi-Smart 12V Power Panel: Design Details

Jul 26, 2021 Ken Cechura

For this project, the basic design was pretty simple. But now comes some details. This is where the design really needs to be broken into parts… inputs, outputs, extra features……

Radio and Electronics

Semi-Smart 12V Power Panel: Initial Design

Jul 23, 2021 Ken Cechura

With multiple station accessory devices (Headphone audio splitter, DSP unit, multiple radios, just to name a few) powered from 12V, I had a realization. There’s a LOT of wall warts…

EMI/EMC thoughts Radio and Electronics

EMI – some basics…

Jul 14, 2021 Ken Cechura

I’ve been an electromagnetic interference (EMI) engineer for… well… a bunch of years at this point. As such, I’ve learned a lot about how to tackle problems, and how to…

Radio and Electronics

Gear Junkie: My Digical workbench

Jun 21, 2021 Ken Cechura

Just like any other tinkerer, I want a completely instrumented workbench with scopes, analyzers, generators and power supplies…   but there’s generally a tradeoff.  Space, cost, accuracy….   Older equipment is less…

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Uncategorized

The Venerable SB-22x Amplifier

Feb 6, 2023 Ken Cechura
MMDVM and DMR Mobile Install Considerations Radio and Electronics

Anytone 578 with BT01 Remote Head

Jan 1, 2023 Ken Cechura
MMDVM and DMR

Another RT Systems Software Update…

Dec 29, 2022 Ken Cechura
MMDVM and DMR Radio and Electronics

Anytone 578 – Internal GPS Antenna

Nov 2, 2022 Ken Cechura

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