Oh, geez, what to say about this 'episode.' In quotes.
This was just a Facebook Live session to let fans see how David W0DHG was progressing in his quest to duplicate Gary KN4AQ's ARVN Studio.
We would say this is hard to do, if Marty Sullaway KC1CWF, who busts in halfway through this episode, hadn't done it himself practically overnight. But that's the kind of thing that makes Marty the Newsline Young Ham of the Year (and our late friend Bill Pasternack WA6ITF should be in that title somewhere).
So there's a lot of screwing around, and a lot of reference to the video (really... shouldn't this all be just audio, and wouldn't it be a lot easier?), so a Radio Rating is hard to pinpoint. Somehow we continue this ramble for more than 90 minutes. And it really is just for diehard fans of the show. And it's here in the audio feed only because we've got the bandwidth here at the end of the month, and we don't hold anything back.
In Part THREE of the 2009 Hamvention SDR Forum, Scotty Cowling WA2DFI updates the state of the HPSDR Project. Then former ARRL President Joel Harrison W5ZN looks at SDR from the operator's perspective.
The HPSDR talk will probably be a little arcane.. ok, a lot arcane.. unless you're into that project. HPSDR was.. still is.. a set of boards that TAPR and HPSDR developed as kits that eventually built an SDR HF transciever. This was full direct sampling SDR before any manufacturer was doing it (years before). The boards included a receiver, transmitter, power supply, amp, audio I/O, control, a back plane, etc.
The system progressed over the course of almost a decade, and every year at TAPR forums and conferences, Scotty updated the progress until a whole radio was complete. Lots of slides with some text and some pictures of the boards. That part of the show gets a Radio Rating of C-, which you'll say is too generous if you're not into HPSDR, but you might say doesn't respect the historic nature of this forum if you are into it.
Joel's talk is more accessible to the 'average' ham. He's got some slides, too (text, charts), but for the audio listener, he gets a Radio Rating of B+.
In Part TWO of the 2009 Hamvention SDR Forum, FlexRadio's Gerald Youngblood K5SDR and Elecraft's Lyle Johnson KK7P square off on the two company's different approaches to implementing SDR.
At the time, neither Flex nor Elecraft did 'direct sampling' - they both used analog heterodyne stages and did their A/D conversion in the IF. The big difference was that the Elecraft radios looked like traditional ham equipment, with lots of knobs and buttons. The only Flex interface was a computer screen. Since then, of course, Flex has advanced to direct conversion, and added an option for a somewhat more traditional front panel. Elecraft has expanded their line of radios, but still uses analog conversion ahead of their SDR stage.
Both presentations have some useful slides, so the Radio Rating is B-.
Quickly trying to use-it-before-we-lose-it data quota with some archive material. Just couldn't get any of the DCC shows completed before the deadline.
This is Part ONE of an SDR Forum from the 2009 Hamvention®. Yes, there was SDR back in 2009. Michelle Thompton W5NYV will talk about the Microwave Engineering Project, and CQ's Doug Grant K1DG gives and early look at new rules for contesting that all the new capabilities of SDR necessitated.
Michelle and Doug have only a few slides each, so this is a Radio Rating of B.
Jeri Ellsworth, co-founder of the Augmented Reality company castAR (among many, many other things) had added ham radio to her list of accomplishments. She's now AI6TK. We spotted her at the Dayton Hamvention this year (AmateurLogic TV snagged the interview).
And she just attended the ARRL/TAPR DCC in St. Louis with her friend Amy Herndon KM6FZE. Over the past year, Jeri and Amy have jumped into ham radio with both feet, but even for these technically accomplished women, ham radio had a steep learning curve. We'll talk about that and lots more in this quick hour.
This is a sit-down, talking heads conversation, and while those heads are interesting to watch, you'll get 97% out of just the audio, so we award a Radio Rating of A. (YouTube?... YouTube?... we don't need no stinkin' YouTube...)