Interesting article on crystal oscillators from March 1950 QST

https://www.wd8das.net/CrystalOscillators.pdf


Steve WD8DAS  
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Radio is your best entertainment value.  
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Mein Ohr ganz nah am Weltempfänger...




On Monday, August 19, 2024 at 07:08:00 PM HST, [email protected] <[email protected]> wrote:


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Today's Topics:

  1. Re: Just had to comment - chirp (Hubert Miller)
  2. Re: Just had to comment - chirp (Robert Nickels)
  3. Re: Just had to comment - chirp (howard holden)
  4. Re: Just had to comment - chirp (Hubert Miller)


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Message: 1
Date: Tue, 20 Aug 2024 01:41:49 +0000
From: Hubert Miller <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [Milsurplus] Just had to comment - chirp
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The Philmore NT-200 was MOPA ?!
Wow. The receiver was only a one tube 6SN7, was it not ?
-H


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Message: 2
Date: Mon, 19 Aug 2024 21:16:07 -0500
From: Robert Nickels <[email protected]>
To: [email protected]
Subject: Re: [Milsurplus] Just had to comment - chirp
Message-ID: <[email protected]>
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On 8/19/2024 7:59 PM, Hubert Miller wrote:
> Philmore had a one tube Novice type transmitter, but not many sold, quite rare.

Hue,

The Philmore NT-200 is a MOPA with 6V6 oscillator and 6L6 amplifier. ?
It keys nicely - you can get the entire pictorial manual from BAMA.

Did they make another ?

73, Bob W9RAN
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Message: 3
Date: Tue, 20 Aug 2024 05:01:56 +0000
From: howard holden <[email protected]>
To: Hubert Miller <[email protected]>, "[email protected]"
    <[email protected]>
Subject: Re: [Milsurplus] Just had to comment - chirp
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Hue just outta curiosity, what was the model number on the Philmore receiver?

Here's a link to a Philmore catalog, not sure of the date though. Sure looks 50s to me!

https://steampoweredradio.com/jim%20garrett/catalogs/Philmore%20Manufacturing%20Electronic%20Kits,%20Sets%20and%20Accessories%20Catalog%20Circa%201960.pdf

Didn't see any receivers using just a 6SN7.

The NT200 transmitter is on page 10.

The catalog sure looks like it was a parts goldmine!

Howie



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Message: 4
Date: Tue, 20 Aug 2024 05:07:39 +0000
From: Hubert Miller <[email protected]>
To: "[email protected]" <[email protected]>
Subject: Re: [Milsurplus] Just had to comment - chirp
Message-ID:
    <SN1PR20MB2029D8C6AF7562A5839A0106E48D2@SN1PR20MB2029.namprd20.prod.outlook.com>
   
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There was a Japanese WWII portable, i think it's in the TM 11-227-E, that's called the "TM Handy", that has like 3 or 4 simple tubes,
and for transmit, elaborate switching switches a tube or tubes between the receiver and VFO transmitter. Now, wouldn't that thing sound
just great on 40 or 30M ? Of course, "The bands were emptier then", not really true.
-Hue Miller


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End of Milsurplus Digest, Vol 244, Issue 44
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