[Lowfer] 500 kHz. QRSS?

[Zack Widup]

When I added the chips to my 440 to make it capable of computer control, I 
also bypassed that attenuator according to several well-publicized 
instructions, as well as opened up the transmit to the full SW spectrum 
(mainly because I had a weird VHF transverter that used a 22 MHz IF). But 
removing that attenuator made a world of difference.

I did the same with my 850.  It's much easier to do on the 850. Same big 
difference in AM BCB reception.

73, Zack W9SZ

On Thu, 4 Oct 2007, k2ors at comcast.net wrote:

> Hi J.B.,
>
>      I have a TS-440 and I recall that the manual specifies that a 20dB attenuator is put in line on the AM BC band. Out of curiosity, I measured the ACTUAL attenuation - it turned out to be something like 45-50 dB !!!  I did the bypass mod and of course it is much much better now! My guess is that your attenuator is in fact many dB greater than the 20dB specified in the manual.
>
> Delta loop 111' on a side should rock, especially since you tune it!
>
>> Hi Warren,
>
>> That's exactly it.  My TS-440 is un-modified with regard to
> t>he attenuator, so I'm losing about 20 dB because of that.
>> The antenna is a Delta loop, 111 ft./side, apex up and
>> series tuned.
>
> 73, J.B., VE3EAR
>
> --
> 73 Warren K2ORS
> WD2XGJ     136-140kHz
> WD2XSH/23 505-510kHz
> WE2XEB/2   160-189kHz
> WE2XGR/1 505-515kHz
>
> FN42hi
> http://www.w4dex.com/wd2xgj.htm
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