Mods for Heath DX-100B and Apache

[k4kgw]

The audio on the TX-1 needs no modification.  The problem that most people encounter has
to do with the audio limiter in the rig.  The instructions in the manual are not as clear
as they should be, but if you read them over and over until you understand how it works,
you'll find they have magnificent audio.

BAsically, the max audio level is set by the infernal screwdriver adjustment that is
accessed thru the CW jack, and the amount of limiting is set by the front panel audio
control.  This was not a very good design, because it is almost impossible to access the
setting inside the CW jack without taking the rig out of the cabinet.

Keith

Larry Knapp wrote:

> Fern - There are quite a number of internet references to modifications for the
> DX-100/100B and TX-1, Apache, as well as many of the other well known
> "boatanchor" gear.  I'm sure there must be some references to the SB-10 as it
> was a very popular accessory; tho I am not aware of anything directly.  Some
> searches of the Internet could probably locate some.
>
> Some of my favorite links are:
> http://dmoz.org/Recreation/Amateur_Radio/Boatanchors/
> http://www.thebizlink.com/am/tech/htm/mods.htm
>
> In addition the publication Electric Radio has over the years (dating back to
> May 1989 to November 2000) some excellent articles on the old radios.  It is
> well worth the investment.  A index has been created by N900 for Electric Radio
> and is found at:
> http://www.qsl.net/n900
> Continue to look at Electric radio for I'm sure hopeful there will be an
> upcoming article on audio modifications to the DX-100/100B...as an aside.
>
> Also the AM Press exchange, on-line internet, has some excellent articles on
> modifcations to the old gear for AM usage; there are some references to the
> Apache and DX-100/100B.  Their address is:
> http://www.bigcountry.com/w5ami/ampx/ampx.htm
>
> The TX-1 and DX-100/100B are excellent heavy old boatanchors and still sound
> very good today.
>
> Hope this helps......Larry, KC8JX, St. Joseph, Mi
>
> --- Fern Rivard <crc at cyberlink.bc.ca> wrote:
> > I have two friends who have the DX-100B and Apache transmitters and they
> > would like to know of any mods done to improve the performance of both rigs.
> > Was there also some upgrades on the SB-10 sideband adapter? Best of 73's
> > from Fern
>
> =====
> May your days be full of sunshine and good thoughts fill your head.
> From: Larry Knapp, KC8JX, St. Joseph, Mi  49085
>   Best 73's
>
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