|[AMRadio] DX 60 mods|
w9ac at arrl.net
Fri Jul 2 21:35:33 EDT 2010
Are the W3CK mods published on the web? Tnx!
----- Original Message -----
From: <johndtate at post.com>
To: <amradio at mailman.qth.net>
Sent: Friday, July 02, 2010 6:52 PM
Subject: Re: [AMRadio] DX 60 mods
>I have a DX-60 with the W3CK mods. It's AMAZING how many UNSOLICITED
> AWESOME AUDIO reports I receive. People simply are sometimes in awe
> that I am on a DX-60 (with the help of either an SB-200 or a Henry
> 2K4). These are usually more seasoned AMers too. These mods are not
> difficult and are very effective. The stock DX-60 is not bad at all
> however. As for worrying about holes... well... there are a LOT of
> DX-60's still out there. If you have a perfect example, then maybe you
> should leave it alone. My radio is not a museum shelf piece but a
> working transmitter.
> The over modulation indicator works spot on. When I see it flash more
> than just a very dim red on peak audio, I can be assured I am over
> driving the audio. A glance at the envelop on the scope confirms
> flat-lining on the negative peaks. It is very accurate.
> The carrier level adjustment is something I'm not sure I could live
> without now. It has become part of my tuning process. You see when
> you adjust it, you have to touch up the audio level and sometimes the
> loading and tuning to get everything "balanced". This ability is VERY
> handy when driving a linear amplifier. It's sort of difficult to
> explain but looking at a scope during tune up will clear that up.
> Bill also published a hint about the accessing the audio gain pot
> without taking the chassis cover off. I use a wooden "ka-bob" skewer
> bought in a pack of them from Wally-world (aka Walmart). They cost
> less than a couple bucks. I whittled one end into the shape of a
> flat-blade screwdriver. Looking down from the top ventilation holes,
> you can see the audio gain pot. The hole directly above it becomes the
> access with this long wooden "screwdriver". I just leave it in place
> with a half inch handle. Works great.
> Anyone wanna try some 40 meter AM tonight?
> 73, John KX5JT
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