[HBR] What would W6TC do?
leecraner at aol.com
leecraner at aol.com
Sat Jan 8 21:37:46 EST 2011
Walt:
?
I actually think he did it.? From the publication of his first receiver in 1957 until his passing (1969 I believe) he continually worked on the HBR design.? He went to all miniature tubes, then went to multisection tubes to reduce the tube count.? He improved the 1st osc to a more stable Hartley oscillator and switched to solid state diodes.
?
Today, I'm sure he would provided coil winding for the WARC bands.? He'd probably provided for selectable sideband and perhaps a narrower bandwidth using audio filtering or a Q multiplier.
?
73
Lee WB6SSW
-----Original Message-----
From: Walt Hutchens <waltah at earthlink.net>
To: HBR Receiver List <hbr at mailman.qth.net>
Sent: Sat, Jan 8, 2011 5:29 pm
Subject: [HBR] What would W6TC do?
The question comes from thinking about some of the questions and ideas
posted here in the last few months. Specifically, what would Ted Cosby
do differently if he were designing an HBR today?
In order to keep the question 'pure,' I rule out whatever thoughts he
might have on integrated circuits, software defined receivers, and the
like: Perhaps like me he got frozen on vacuum tubes a few decades back
and wanted today to do a tube receiver along the old lines but using
the parts available for vacuum tube construction today.
I'm assuming the goals of 'you can build it' and 'it will outperform
most commercial sets of equivalent technology' would stay the same. I
think that would mean keeping the plug in coils.
Beyond that, however, things are less certain.
Thoughts, anyone?
Walt Hutchens
KJ4KV
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