[HBR] overloading the HBR

[Brian Burns]

Hello Bill,

I'm sorry if I gave the impression that I'm giving up on the HBR. It's still
very much in the works. But I am thinking about ways to increase front-end
protection against strong adjacent signals---tuneable bandpass filter
anyone?  

I said that I was likely to build only one communications receiver, but
since I'm in such (certified) good health at age 75, I'm likely to last long
enough build several. 

I attribute my good health largely to the low-carbohydrate diet. My "other
hobby" is promoting the low carb-diet, as it's the closest thing to a
cure-all that we are ever likely to come across. It cured my severe case of
type 2 diabetes in 5 months, without any medication. 

I've been on the low-carb diet for 14 years, and during that time research
has shown that the enormous increase in carbohydrate consumption in the last
100 or so years is the root cause of just about everything that kills us as
we get older. I would be happy to send info and links to anyone interested.

Cheers,

Brian

-----Original Message-----
From: HBR [mailto:hbr-bounces at mailman.qth.net] On Behalf Of Bill Cromwell
Sent: Tuesday, February 17, 2015 11:57 AM
To: hbr at mailman.qth.net
Subject: Re: [HBR] overloading the HBR

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
>
>

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