[HBR] HBR-17 On Youtube

[George N2APB]

What nice video of your newfound treasure in operation Scott!  I don¹t
recall seeing other videos of the HBRs in action ... Quite a motivation for
moving onward to complete my own Œ16, also with an Eddystone dial and an
(outboard) Q-multiplier.

Thanks for posting.

73, George N2APB



From: <whitebear1122 at comcast.net>
Reply-To: HBR Receiver List <hbr at mailman.qth.net>
Date: Thu, 26 May 2011 03:29:55 +0000 (UTC)
To: HBR Receiver List <hbr at mailman.qth.net>
Subject: [HBR] HBR-17 On Youtube


Out of the blue I was recently given an HBR receiver that the OT called an
HBR-17. He said it's Bill McKay's variation of the HBR-16 with the addition
of a Q-Multiplier and some other improvements. He also built it with the
rare Eddystone dial. In fact the receiver came with the Eddystone receipt as
well. Gosh those Eddystone dials are just fabulous albeit kind of a
mechanical pain in the butt to implement.

He had been looking for just the right ham to give the HBR to, one who knew
what it was and appreciated it. A mutual friend introduced us. When we met I
was sort of grilled about radios and the talk turned to the homemade radios.
Lucky for me I knew alot about the history of the HBR's and a little about
TC. The OT must have been satisfied because he decided to give it to me.

The OT's family had told him that his stuff would go into the trash when the
time came so the OT wasn't taking any chances.

It hasn't been used since 1973 and kind of looks like it too. It had been
sitting on the floor next to his operating bench all that time. I didn't
clean it all for the video so you're seeing it in all it's glory. The
receiver is coiled up for 20m in the video. I must say the Eddystone is
still smooth after all these unused years. It came with a complete set of
coils from 10m through 80m. I will mention that the coil box was marked
"Precious" and irreplaceable coils for the HBR receiver.

The youtube video is located at:
http://www.youtube.com/watch?v=kqRSI99g1x8

To power it after 38 years of being powered down, I brought it up over
several minutes in a variac. I wasn't trying to reform the capacitors, but
instead I wanted to avoid the sudden inrush currents that might occur from
just plugging it in and turning it on.

The receiver worked right off the bat and I found it to be completely
stable, very sensitive, good audio although the AGC audio was a bit low in
amplitude. I'm still learning how to use it.

So as I now own a Bill McKay HBR-17, I can hardly wait to build my own
receivers. I think I've finally nailed down the plan. I want to build an
HBR-11 first and then an HBR-13.

I'm still looking for a few of the unobtainium HBR parts. Looking for three
Miller 1709 or 1710 ( I have one so far), 100 KC IF, and two 1730 1800 kc
IF. 

73, Scott WA9WFA 


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