Topband: Receivers, Noise Blankers and Key Clicks

[Tom Rauch]

It's because of the noise blanker fellows. I can make a FT1000 series or
almost any Yaesu test anywhere from 60- 80 dB for IM3 by fiddling with the
bias on the NB amplifier FET. That why the best policy is to turn the thing
off whenever the NB is off by changing the circuitry.

The distressing thing to me is despite telling them over and over again it
is a problem, they keep copying the same design into new versions. Talk
about a Ford Pinto gas tank syndrome!

73, Tom W8JI

>  >Can any one offer a reason why we get the following differences between
the
> MK5 and the Field:
>
>          Clive, I would also add the original MP to your query:
>
> Radio                        IMD               BDR
>
> FT-1000MP*                   78*               108
> FT-1000MkV                   69                100
> FT-1000Field                 60                 88
>
> *FT-1000MP IMD at 2 kHz and BDR at ~500 Hz per KC1SX.
>
> This has always puzzled me since they have similar designs.
>
>                                          73,  Bill  W4ZV
>
> P.S.  Copying Mike KC1SX at ARRL who may have an opinion.
>
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