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KC9UMR

Ramblings of yet another nerd...

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Latest Post

Crosspoint Menus Another Crosspoint Update Update on the 8816 Crosspoint Switch Project Yet ANOTHER Project… the MT8816 Crosspoint Switch More 705 accessory updates
Radio and Electronics

Crosspoint Menus

2025-04-24 Ken Cechura

Less tech, more code. I need to test the power supply module I bought (+12 in, +/- 5 out)….. soon. I also need some real buttons to use for the…

Radio and Electronics

Another Crosspoint Update

2025-04-21 Ken Cechura

My brain’s been churning on this one. I want to drive the MT8816, which requires 8 different bits plus a strobe and reset, I need discrete inputs and outputs, I…

Radio and Electronics

Update on the 8816 Crosspoint Switch Project

2025-04-12 Ken Cechura

Finally got my SN74LV8153 chips. Did some coding in the background, but without this chip, it wasn’t value added to mess with it. Mouser is 20 or 30 miles away.…

Radio and Electronics

Yet ANOTHER Project… the MT8816 Crosspoint Switch

2025-03-14 Ken Cechura

This one’s been in the works for a long time. I’ve always wanted to play with some sort of audio routing device. I’ve worked on a number of different airplanes.…

Radio and Electronics

More 705 accessory updates

2025-02-10 Ken Cechura

In addition to the dewalt battery adaptor, I have also started using a 12 lithium jump start pack. In both cases, I had to kludge power cables…. This is a…

Radio and Electronics

Icom’s 13 pin DIN… another minor thing.

2024-07-14 Ken Cechura

Once upon a time, I bought some 13 pin DINs to wire my own cables for the Icom 706 (and also later radios). 13 pin solder cups, with my clumsy…

Radio and Electronics

Minor Modifications: Heil Icom Adaptor Cable

2024-07-06 Ken Cechura

I’ve had a Heil Proset Plus IC for quite some time – it’s comfortable, and the phase reversal switch is great for pulling weak signals out of the noise. I’ve…

Radio and Electronics

Updates… RUMLog, WSJT, WFView… MacOS

2024-06-29 Ken Cechura

It’s been a while since I’ve run RUMLOG…. but I’ve been using WFView and WSJT-X together with no issues. I wasn’t keen on the logging abilities of WSJT, so I’ve…

EMI/EMC thoughts Radio and Electronics Uncategorized

A new power supply for the Sprague 600A Interference Locator

2024-05-02 Ken Cechura

Many years ago, I was blessed to get a Sprague 600A Interference Locator from the estate of my Elmer, WB9KHR. As an EMI Engineer, this was just COOL. It was…

Radio and Electronics

Revisiting the cable modem spectrum analyzer

2024-03-28 Ken Cechura

I actually hit the front page of hackaday writing about this one, and I’m still being honest that this was NOT my discovery, I just made a few observations about…

Posts pagination

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You missed

Radio and Electronics

Crosspoint Menus

2025-04-24 Ken Cechura
Radio and Electronics

Another Crosspoint Update

2025-04-21 Ken Cechura
Radio and Electronics

Update on the 8816 Crosspoint Switch Project

2025-04-12 Ken Cechura
Radio and Electronics

Yet ANOTHER Project… the MT8816 Crosspoint Switch

2025-03-14 Ken Cechura

KC9UMR

Ramblings of yet another nerd...

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