[AMRadio] DX 60 mods


rbethman rbethman at comcast.net
Fri Jul 2 19:30:24 EDT 2010


  Jim,

The manual copies I have do not show what series.

There is one neon lamp shown, and it is designated as the "pilot lamp".

They may indeed made a later version, however - I haven't seen it or one.

There have been way too many models of Hallicrafters for me to keep up with.

Bob - N0DGN

On 7/2/2010 7:20 PM, james.liles wrote:
> 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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|               AM Amateur Radio Operator    NØDGN                 |
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