[Lowfer] TS450 BC Band mod didn't work !!

[Zack Widup]

I have an 850S and a 440S.  I've done the BC band attenuator mods on both. 
I've never had my hands in a 450 so I don't know what is involved with 
removing the attenuation on it.

I looked around on internet for info on this mod but couldn't find any.

I could download the manual for the 450 from ww.mods.dk but they make you 
just about jump through hoops to get anything from them anymore.

73, Zack W9SZ

On Sun, 13 Jan 2008, Andy Bell wrote:

> Well guys; my project weekend turned out to be a bust.
> Evidently the TS850S and the TS450S are not identical
> electrically. I did the 850 mod to bypass the BC Band
> atten. but all I gained was about 1-1/2 S-units,
> certainly not a 24+ dB gain, and the mod dropped
> everything from 499KHz down to the attenuated level.
> Evidently it tied the 2 circuits together. ( Big
> Disappointment ). Even tried reading the microscopic
> schematic in the service manual and bypassing a few
> resistors, but all it did was make the bandwidth so
> wide that listening to the BC Band was like hearing 3
> stations at a time. Ended up undoing all the mods
> tried, and putting it back original. Wasted a lot of
> time, but got to heat up the soldering iron. ( Love
> that smell of flowing solder ).
> Thanks to everybody for your input. 73, Andy - KU4XR
>
>
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