No earth-shattering news to report on the blog, but a few little things to mention (hence the “junkbox” title). The CC-20 Beta 1 test is proceeding pretty much as planned. As of tonight, AA7EE has his receiver up and running now and a couple of the others are close behind. I’m eagerly awaiting the results… Read More Junkbox
As I’ve previously noted, the VRX-1 is a nifty little basic direct conversion receiver, but it has some shortcomings that could be problematic under certain circumstances. Here’s a story of one of those issues and the cure that was found. Dave AA7EE purchased and built a VRX-1 kit a while ago but was never fully… Read More Curing Common Mode Hum in the VRX-1
As you may recall in a previous post last December, I made a QSO with, then received a cool e-mail from Bob KE7GKM about his quest to make 100 QSOs using a lashup of a VRX-1 and a homebrew QRP transmitter. Bob kindly sent me an update on his progress: Hi Jason, This is just… Read More KE7GKM VRX-1 Update
Over the last few days, Jennifer has been off work, so I’ve been able to spend more time in the shack working on Project X. I only recently made my first QSO with the prototype rig (I think propagation was unfavorable for me when I was trying late in the evenings), so I’ve been leaving… Read More This Is What Radio Is All About
The VRX-1 receiver kit uses a TDA7052 audio amplifier IC, which is a bit different from your run-of-the-mill LM386. Because of its push-pull output, if you use a phones jack, you must isolate it from ground. This isn’t something you have to worry about if you use a non-conductive enclosure or if you have an… Read More DIY Isolated Jack
While I was away on my honeymoon, I noticed that the upcoming kit that I’ve been hinting about for months has finally been released. The Four State QRP Group announced availability of the VRX-1 direct conversion receiver. The VRX-1 is a simple 40 meter VXO-tuned receiver (crystal on 7.030 MHz), but it’s not your typical… Read More Introducing the VRX-1