|[AMRadio] DX 60 mods|
james.liles at comcast.net
Fri Jul 2 19:20:51 EDT 2010
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
>> the Hallicrafters HT-40. Look at the latest schematic and you will see
>> very effective modulation changes to that radio.
>> Kindest regards Jim K9AXN
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