From brianburns1066 at gmail.com  Tue Jun  3 10:43:23 2014
From: brianburns1066 at gmail.com (Brian Burns)
Date: Tue, 3 Jun 2014 07:43:23 -0700
Subject: [HBR] Simplex Super and Super Gainer
In-Reply-To: <1401226541.16261.YahooMailBasic@web160106.mail.bf1.yahoo.com>
References: <1401226541.16261.YahooMailBasic@web160106.mail.bf1.yahoo.com>
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAAJSEAe3L0Z9EpnXWPyk/oSoBAAAAAA==@gmail.com>

Hello Ron and Bill,

At last a moment to answer your thoughtful replies to my question about the
regenerodyne as a practical station receiver.

~ By using a variation on the "regenerodyne" design, one CAN use a selective
bandpass filter, in front of the regenerative (2nd) detector.

 ~ This alternate scheme uses a tunable oscillator in the frequency
conversion (1st detector) stage. The regenerative 2nd detector stage
operates on a fixed frequency.

~ AFAIK, the original fixed IF frequency "super gainer" scheme was innovated
by Frank Jones, W6AJF, in the 30s. It used regeneration in both the 1st and
2nd detector stages. The 2nd detector was of the autodyne type.

The Super Gainer's allowing for added selectivity makes it seem the better
choice, so I got to looking at how far Frank Jones took the basic design.
His last article on it was in CQ November 1957. Grounded grid RF amplifier
and crystal filter no less! He did however say that the AM performance was
sub-par.

So, quite by coincidence, Dayle Edwards over on the regenerx list has come
up with a solution to the AM//CW//SSB problem in his fourth iteration of the
Super Gainer design. His work is very much in the practical style of Frank
Jones, and details are supposed to be coming soon.

 ~ Later, the ARRL handbook contained info on a basically similar design
(Simple-X Super, I believe it was called).

A few days before your post I got out the Simplex-Super article again, and
remembered why it doesn't quite make my "A list". A band imaging design
requires building a converter(s) for the higher bands. 

The stability of the extra conversion stage is attractive, just as it is
with the regenerodyne, but that is a good deal more complication. I'll see
if I can build a local oscillator that is stable enough to be useful on the
higher bands.

 ~ I have recently begun construction of a 3 tube superhet, but construction
has been put on the shelf, for now, for various reasons.
 
By all means keep us posted!

Cheers,

Brian


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From brian at lessonsinlutherie.com  Fri Jun 13 11:44:29 2014
From: brian at lessonsinlutherie.com (Brian Burns)
Date: Fri, 13 Jun 2014 08:44:29 -0700
Subject: [HBR] Coupling circuits
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAADIFexdCZvdCq29dLcG4FaABAAAAAA==@lessonsinlutherie.com>

Hello All,

 

A couple of weeks ago I sent out a copy of Max Robinson's I.F. transformer
work-around circuit to a bunch of people. Somebody responded with some links
to " coupling circuits" that could be substituted for I.F transformers. I
thought they looked like some really interesting sources of information, and
filed the email away in my Outlook database. 

 

Now, search as I might, I can't find them! If the kind soul that sent them
to me would be so good as to send them along again, I would be most obliged
(:->).

 

Cheers,

 

Brian Burns   Ex: W5BRO, K6UCD

 

 



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From brian at lessonsinlutherie.com  Sun Jun 15 12:55:42 2014
From: brian at lessonsinlutherie.com (Brian Burns)
Date: Sun, 15 Jun 2014 09:55:42 -0700
Subject: [HBR] Crystal filter article
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAAOwR934QCqtDolq0BLNz9FABAAAAAA==@lessonsinlutherie.com>

Hello All,

 

"Back in the day", which was mid 1950's for me, I was an avid reader of CQ
magazine. I also read QST, but for a kid who saved his lunch money to buy
parts, the QST projects were mostly beyond my means. 

 

Dennis Regan (K6ZJU) and I (K6UCD) built the $3.96 two element beam for 15
meters out of CQ, and with a borrowed cathode modulator had a ball! The beam
was made with bamboo poles wrapped with aluminum foil, and hose clamps for
connectors!

 

So I decided to take a sentimental journey back to the issues of CQ from
that era by spending $10 to sign up for a month's access here:

 

http://hamcall.net/cq

 

I've been printing out the table of contents page for each month to keep in
a binder for reference. In the November 1955 issue there is an article
titled "A Receiver Variable Selectivity Adapter". 

 

Now this is more like it! For the dedicated do-it-myselfer it has eight
pages of real how-to instructions, including crystal grinding to raise the
crystal frequency, and a simple copper plating method for lowering crystal
frequency. It is a combination full lattice and half lattice filter with
switching to three different selectivities, so you might not want to build
the whole thing, but the article has a lot of good info. 

 

Cheers,

 

Brian

 

 



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From radio at daileyservices.com  Sun Jun 15 13:13:25 2014
From: radio at daileyservices.com (radio at daileyservices.com)
Date: Sun, 15 Jun 2014 11:13:25 -0600
Subject: [HBR] Crystal filters and bamboo beams
References: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAAOwR934QCqtDolq0BLNz9FABAAAAAA==@lessonsinlutherie.com>
Message-ID: <A7527B68CB2541D9824238B978E04356@w0eaj>

Brian,

Downright cool.  I was a new Novice in '62, but was counseled by my Elmers 
to "Build it yourself; it's cheaper and if it doesn't work, you "get" to fix 
it"  A Footnote: - My old boss at Burstein-Applebee (BA) in KC was W0OSD sk 
(old stinky drawers). When John was on Munda in the Solomons during WW-II, 
they made a bamboo beam, painted in aluminum paint, 'cause in those days, it 
had LOTS of aluminum in it.  He said they mostly used it to listen to 
stateside stuff, but once the island was totally secured, they used a BC-610 
& BC-348 to "work home".. albiet somewhat illegally, as they'd communicate 
with military stations only.  He said it worked "swell" until a typhoon took 
it off the top of the palm trees, and the last time they saw it, it was 
making about 80 knots toward the Phillipines.

Tom - former RMC USN - W?EAJ 


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From brian at lessonsinlutherie.com  Wed Jun 18 17:14:54 2014
From: brian at lessonsinlutherie.com (Brian Burns)
Date: Wed, 18 Jun 2014 14:14:54 -0700
Subject: [HBR] Tried Max's circuit?
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAANFz6Q9sYDBMhTm/rhstD/0BAAAAAA==@lessonsinlutherie.com>

Hello All,

 

Somewhere around ten people from the HBR list requested a copy of Max
Robinson's I.F transformer work-around circuit. It's been several weeks now,
and I'm wondering if anyone has had a chance to try it out. 

 

Max is the moderator of the Yahoo group funwithtubes, and I've asked him to
come up with a simple Frank Jones type Super Gainer regenerative superhet
circuit. He was asking if anyone had tried the circuit. The Super Gainer
uses one I.F. tansformer, and would be relatively easy to build as a test
bed. I'm certainly open to other suggestions.

 

Cheers,

 

Brian

 

 



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From hbr at mailman.qth.net  Wed Jun 18 20:51:45 2014
From: hbr at mailman.qth.net (Ejparagi--- via HBR)
Date: Wed, 18 Jun 2014 20:51:45 -0400 (EDT)
Subject: [HBR] Tried Max's circuit?
Message-ID: <65f48.5f10d8da.40d38e21@aol.com>

Brian,
 
Is it too late to request a copy of Max's IF transformer work around  
circuit?  I must have missed the cue in the first post of the  thread.

73,

Ed  WB9RMA
 
 
 
 
In a message dated 6/18/2014 5:16:45 P.M. Eastern Daylight Time,  
brian at lessonsinlutherie.com writes:

Hello  All,



Somewhere around ten people from the HBR list requested a  copy of Max
Robinson's I.F transformer work-around circuit. It's been  several weeks 
now,
and I'm wondering if anyone has had a chance to try it  out. 



Max is the moderator of the Yahoo group funwithtubes, and  I've asked him to
come up with a simple Frank Jones type Super Gainer  regenerative superhet
circuit. He was asking if anyone had tried the  circuit. The Super Gainer
uses one I.F. tansformer, and would be relatively  easy to build as a test
bed. I'm certainly open to other  suggestions.



Cheers,



Brian







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From adrianjamesflynn at gmail.com  Thu Jun 19 12:18:34 2014
From: adrianjamesflynn at gmail.com (Adrian Flynn)
Date: Thu, 19 Jun 2014 12:18:34 -0400
Subject: [HBR] Tried Max's circuit?
In-Reply-To: <65f48.5f10d8da.40d38e21@aol.com>
References: <65f48.5f10d8da.40d38e21@aol.com>
Message-ID: <CAOtbafGb=jtGO_VsaregY3fdg6e23e=3akiqDGX3MOh6RGXe2g@mail.gmail.com>

here is the link.

http://www.funwithtubes.net/

he has a lot of interesting information on his site, but you do have to
search for a lot of it.

72/73
Adrian KF7DYU


On Wed, Jun 18, 2014 at 8:51 PM, Ejparagi--- via HBR <hbr at mailman.qth.net>
wrote:

> Brian,
>
> Is it too late to request a copy of Max's IF transformer work around
> circuit?  I must have missed the cue in the first post of the  thread.
>
> 73,
>
> Ed  WB9RMA
>
>
>
>
> In a message dated 6/18/2014 5:16:45 P.M. Eastern Daylight Time,
> brian at lessonsinlutherie.com writes:
>
> Hello  All,
>
>
>
> Somewhere around ten people from the HBR list requested a  copy of Max
> Robinson's I.F transformer work-around circuit. It's been  several weeks
> now,
> and I'm wondering if anyone has had a chance to try it  out.
>
>
>
> Max is the moderator of the Yahoo group funwithtubes, and  I've asked him
> to
> come up with a simple Frank Jones type Super Gainer  regenerative superhet
> circuit. He was asking if anyone had tried the  circuit. The Super Gainer
> uses one I.F. tansformer, and would be relatively  easy to build as a test
> bed. I'm certainly open to other  suggestions.
>
>
>
> Cheers,
>
>
>
> Brian
>
>
>
>
>
>
>
> ---
> This  email is free from viruses and malware because avast! Antivirus
> protection is  active.
> http://www.avast.com
> ______________________________________________________________
> HBR  mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help:  http://mailman.qth.net/mmfaq.htm
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>
> This list hosted by:  http://www.qsl.net
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> Please help support this email list: http://www.qsl.net/donate.html
>

From brianburns1066 at gmail.com  Thu Jun 19 13:14:13 2014
From: brianburns1066 at gmail.com (Brian Burns)
Date: Thu, 19 Jun 2014 10:14:13 -0700
Subject: [HBR] Tried Max's circuit?
In-Reply-To: <CAOtbafGb=jtGO_VsaregY3fdg6e23e=3akiqDGX3MOh6RGXe2g@mail.gmail.com>
References: <65f48.5f10d8da.40d38e21@aol.com>
	<CAOtbafGb=jtGO_VsaregY3fdg6e23e=3akiqDGX3MOh6RGXe2g@mail.gmail.com>
Message-ID: <!&!AAAAAAAAAAAYAAAAAAAAAO9WiXwKTRJMveKqmcXf97/CgAAAEAAAAPDbg8VYlwRFjmgNob8eKAsBAAAAAA==@gmail.com>

Hello Adrian,

Right, that's Max Robinson's group, and he is the guy that supplied the IF
transformer work around circuit.

Cheers,

Brian



here is the link.

http://www.funwithtubes.net/

he has a lot of interesting information on his site, but you do have to
search for a lot of it.

72/73
Adrian KF7DYU


On Wed, Jun 18, 2014 at 8:51 PM, Ejparagi--- via HBR <hbr at mailman.qth.net>
wrote:

> Brian,
>
> Is it too late to request a copy of Max's IF transformer work around 
> circuit?  I must have missed the cue in the first post of the  thread.
>
> 73,
>
> Ed  WB9RMA
>
>
>
>
> In a message dated 6/18/2014 5:16:45 P.M. Eastern Daylight Time, 
> brian at lessonsinlutherie.com writes:
>
> Hello  All,
>
>
>
> Somewhere around ten people from the HBR list requested a  copy of Max 
> Robinson's I.F transformer work-around circuit. It's been  several 
> weeks now, and I'm wondering if anyone has had a chance to try it  
> out.
>
>
>
> Max is the moderator of the Yahoo group funwithtubes, and  I've asked 
> him to come up with a simple Frank Jones type Super Gainer  
> regenerative superhet circuit. He was asking if anyone had tried the  
> circuit. The Super Gainer uses one I.F. tansformer, and would be 
> relatively  easy to build as a test bed. I'm certainly open to other  
> suggestions.
>
>
>
> Cheers,
>
>
>
> Brian
>
>
>
>
>
>
>
> ---
> This  email is free from viruses and malware because avast! Antivirus 
> protection is  active.
> http://www.avast.com
> ______________________________________________________________
> HBR  mailing list
> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help:  http://mailman.qth.net/mmfaq.htm
> Post:  mailto:HBR at mailman.qth.net
>
> This list hosted by:  http://www.qsl.net Please help support this 
> email list:  http://www.qsl.net/donate.html
>
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> Home: http://mailman.qth.net/mailman/listinfo/hbr
> Help: http://mailman.qth.net/mmfaq.htm
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>
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html
>
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