[HBR] overloading the HBR

[Bill Cromwell]

Hi Brian,

I'm pleased to see that you are NOT going to give up on the HBR.

73,

Bill  KU8H

On 02/17/2015 01:51 PM, Brian Burns wrote:
> Hello Bill,
>
> ~ Hey Brian, I thought you were going to build one yourself???  : ) Weren't
> you saving the parts for one???
>
> Yes, and I still am, but the pesky little business of making a living keeps
> getting in the way. Also, since my teaching business went into the tank
> along with the economy, I'm trying to do it by actually making guitars---a
> tough row to hoe.
>
> Yes, I am in parts-collecting mode, and thanks to the generosity of the
> members of the HBR list, I doing quite well at that. First priority for me
> is to get setup with a place to work, and with adequate test equipment.
>
> I spent my entire junior year in high school building a Byron Goodman double
> conversion band imaging design. That was in Redwood City, CA 1955-56, at
> Sequoia High School, which offered radio shop. I could never get it to work
> because the shop teacher was ignorant of superhets, and there was no test
> equipment outside of VOM's. I'm determined not to let that happen again.
>
> So far I have built a nice test bench from an old solid core door, with
> shelving above and below. I just got it wired for power this weekend.
>
> I've acquired a signal generator from Ian, and a scope from a guitar making
> student of mine, plus an Eico regulated power supply. Then there is the AADE
> L//C meter, a grid dipper, and a couple of VOM's. I've got a tube tester,
> and a beautiful old Hickok 209A VTVM that need to be restored.
>
> Though I am in excellent health for a 75 year old, I don't have the stamina
> I had as a younger man. When I take a break to rest I read articles on
> receivers, mostly downloaded from the QST archives from back in the day.
>
> One of the popular notions back then was the idea of attenuating strong
> adjacent channel signals in the front end, before they got amplified by an
> RF or IF stage, and before they could cause the usual havoc. I keep looking
> at the front end regenerative stages in the HBR series, and wondering how
> easily they might be overloaded.
>
> So, I'm likely to make only one communications receiver, and given that I am
> the slow, meticulous type, it's likely to be a several years long project.
> There are a lot of things to like about the HBR series, not the least of
> which is people on the HBR list like yourself that are willing to help.
>
> Cheers,
>
> Brian
>
>