[AMRadio] DX 60 mods


james.liles james.liles at comcast.net
Fri Jul 2 19:20:51 EDT 2010


Bob,
The Ht-40 used a neon indicator for over modulation announcement --- I 
believe it was the K level schematic.  Also, there were numerous audio 
changes made.  Kindest regards Jim K9AXN

----- Original Message ----- 
From: "rbethman" <rbethman at comcast.net>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Friday, July 02, 2010 5:22 PM
Subject: Re: [AMRadio] DX 60 mods


>  Jim - The HT-40 came out before zeners and leds unless I'm really out
> in left field.
>
> Bill Breshears', WC3K, modification used those components to give an
> over modulation "indicator" to adjust the mic gain with, and allow the
> operator to run with a clean signal.  Circa 1999 - 2002.
>
> Bob - N0DGN
>
> On 7/2/2010 5:55 PM, james.liles wrote:
>> Hi Bob:
>> I believe that over mod detection change originated in the latest version 
>> of
>> the Hallicrafters HT-40.  Look at the latest schematic and you will see 
>> some
>> very effective modulation changes to that radio.
>> Kindest regards Jim K9AXN
>
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