If you own one of the Swann brand multi-camera surveillance systems (I maintain multiple systems at multiple locations) and it has one of these type power supplies (see figure 1 and figure 2), BEWARE! These power supplies are almost 100% guaranteed to fail. To make matters worse, before they fail completely they are very likely […]
This video is a demonstration showing the RF Power and VSWR Monitor & Alarm System I recently designed and built. The front panel and chassis used to be a Glenayre Power Monitor panel, but after being completely gutted, retrofitted, painted, etc., it is now a custom Arduino-based build. I finished creating and putting the front […]
Just sharing a few photos of the latest G.E./Harris Mastr III station to repeater conversion I’ve done. This one is for a SKYWARN group up in Northeast Alabama and will be going on a recently coordinated VHF frequency pair. […]
If you are interested in hooking up one of Scott Zimmerman’s incredible STM32_DVM multi-digital mode controllers to a Yaesu Fusion DR-1 or DR-1X repeater, then I have produced a webpage/article and information which was written for you; moreover, if you want to create an interface that is sure to work well and adds several other […]
As of 5/24/18 the 442.175(+) Gold Hill machine has been changed to full-time DMR operation. It is working fantastic and a bunch of us are enjoying having nice, clear DMR QSO’s using handheld radios to actually go through the repeater direct from distances we were not able to when it was running as an analog […]
I realize this isn’t directly ham radio-related. Well, actually it sort of is, because this project involves a subwoofer which is now part of the system I use for producing amateur radio-related instructional and informational videos, for monitoring DMR radio activity, and other fun stuff. Altec Lansing ATP3 subwoofer purchased at a thrift store but […]
It took me a while to gather the hardware and get everything ready to build this GMRS repeater for K6JFS, but I finally got around to getting it done this morning. It actually went very smoothly, expecially considering the fact I had to completely replace the original PLL type exciter with a non-PLL type and […]
An ICOM IC-706MKIIG came in with the owner wanting the MARS CAP modification done on it so that he can transmit on 60 Meter band. The mod is fairly simple, but involves removing a TINY surface mount component which is about the size of the ball in the tip of a ballpoint pen. The mod […]