[ARC5] Selectivity and the BC-455

[J Mcvey via ARC5]

Do you have a link to the article?



On Thursday, October 23, 2014 7:05 PM, DSP3 <jeepp at comcast.net> wrote:
 


Gents,

If I may say without seeming to toot a horn I just blew into..... The ER 
Article I did a few months ago on the R-26 and the BC-454 selectivity 
mod, I just did another R27 and it really did improve things, a lot.  I 
have not done the quantitative measurements, yet, but I can say that the 
40 meter band does sound a lot better.  Along with a non-destructive 
bracke- mounted Jackson drive, its a pleasure to tune, now.  Just a 
couple of thoughts.....

Jeep - K3HVG




On 10/23/2014 4:05 PM, Kenneth G. Gordon wrote:
> RE: our discussion a bit ago concerning the almost non-existent selectivity of
> the BC-455 and/or R-27/ARC-5, and the article in ER on using the "Q-5er" to
> help that.
>
> In doodling around on the internet the other day, I happened to find this
> video on youtube:
>
> https://www.youtube.com/watch?v=XlrPCR1IKlo
>
> To say I was more than a little surprised would be an understatement.
>
> There is something about this fellow which is familiar, but I can't put my
> finger on it. I am almost certain I have seen him in the flesh...
>
> Anyway, he adds a simple crystal-filter to the BC-455 in an old IF can. What
> it does for the selectivity needs to be heard to be believed.
>
> I would never have thought of this.
>
> Ken W7EKB
>

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