|[AMRadio] DX-100 / Apache modifications on the Web|
wb3fau at hotmail.com
Wed Apr 17 11:44:29 EDT 2002
Mahlon, I will explain it one more time, as I have done it to my
own Apache. You need 2 parts- a cap approx 0.1 uf @2kv and a pot
500k 1 or 2 watt. Connect one side of the cap to the
500ohm tap of the mod transformer sec.- other side of cap to
one end of pot- tie the other 2 terminals of the pot together to make
a rheostat- connect this side of the pot to the cathode of the audio
driver tube 12BY7. Be careful! High holtage present here.
Start out with the pot fully closed- put transmitter on the air-
slowly open the pot- to the point of feedback- turn it back
just slightly. Thats it get audio rpts! Russ
>From: Mahlon Haunschild <mahlonhaunschild at cox.net>
>Reply-To: amradio at mailman.qth.net
>To: amradio at mailman.qth.net
>Subject: Re: [AMRadio] DX-100 / Apache modifications on the Web
>Date: Tue, 16 Apr 2002 17:10:19 -0500
>Haven't run across the Russ WB3FAU feedback mod before. Tell us more.
>Mahlon - K4OQ
> > Message: 5
> > Date: Mon, 15 Apr 2002 22:52:55 -0400
> > From: rbethman at comcast.net
> > Subject: Re: [AMRadio] DX-100 / Apache modifications on the Web
> > To: amradio at mailman.qth.net
> > Reply-To: amradio at mailman.qth.net
> > I have to agree with Mahlon implicitly. My Apache has under gone these
> > mods - PLUS the Russ WB3FAU feedback mod.
> > The 40 mtr "critical" ears, and the monitor scope bear out the results.
> > No more distortion - beautiful audio, and control through feedback make
> > operating a grand experience!
> > Bob - N0DGN Craf-T-Bob (Because I love Hallicrafters!)
> > Apache(2), Mohawk(2), HT-32A, SX-99, SX-101 mk III, R-390A
> > EAC, R-390A Collins, DX-60 w/HG-10
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>AMRadio at mailman.qth.net
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