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Dave Richards AA7EE

Tag: VRX-1

Written by AA7EEJuly 6, 2011November 15, 2016

Common-Mode Hum Issue With VRX-1 Fixed and YouTube Video Posted

In the last post I mentioned a hum issue that I’d been having with the VRX-1 that I bought as a kit from 4SQRP. When I related that it only happens on connecting the antenna, Jason NT7S told me it was probably common-mode hum. For a better description, refer to EMRFD, but my layman’s understanding […]

Written by AA7EEJuly 1, 2011July 2, 2011

First Forays Into Manhattan Construction – Crystal Oscillator and a Peaked Lowpass Filter

With the exception of NT7S’ VRX-1 receiver I’ve had no experience with Manhattan construction. Once the majority of my recent flurry of parts orders came in, I figured it was time to start building a few things Manhattan style, and to start with some simple circuits. I found a good supplier of PCB material. His […]

Written by AA7EEJune 19, 2011

No Commercial Rig In The Shack For Now And All Sorts Of Homebrew Plans

I sold my FT-817 just days after mentioning 2 posts ago that it was up for sale.  After a week on Craigslist, I was planning on putting it up in a few of the online ham forums and then on eBay. It didn’t come to that though. In fact my rig sold not because of […]

Written by AA7EEJanuary 11, 2010January 6, 2011

Software Defined or Hardware Defined – Which Way to Go?

The main project going on in the AA7EE  “shack” (for which read “main room of my studio apartment”) has been, and will continue to be, the monumental task of committing my sizable collection of cassettes, CDs, DAT tapes and broadcast carts to backed up hard drives.  This is an ongoing project which I expect to […]

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