[Milsurplus] ARR 15, how to narrow selectivity???

wf2u at ws19ops.com wf2u at ws19ops.com
Thu Jun 4 11:53:19 EDT 2009


Yup, I use that too, especially on AM. It's not as hot for CW as the  
SCAF types.

However, the ARC-2 is still pretty touchy when 75 M is wide open on  
AM, a few  roundtables around 3885 become one...

73, Meir WF2U
Landrum, SC

Quoting Marty Reynolds <cosmoline at aa4rm.ba-watch.org>:

>
>
> Hey Meir  - was waiting 4 u to flog u old Radio Shark digital filter.  One
> that hunts
> & kills hetrodynes on AM.  But no, no mention & I LOVE mine
>
> Say mech filter buffs.  Try this:
>
>   2 6BH6s in fil-series* in a minibox octal-plug connected to 2nd 12SG7
> IF.  Ckt per
>   75A3 retro to 75A2.
>
>    Can't close cover if dyno inside - yawn
>
>    Did FB
>
> And only use ARC-2 on 3725 or 3885.  No CW stuff there.  Res Ipso Loquitor
>
> And an ARC-2 dyno out there anyone?  Like to retire the TV xfrmr/bridge
> hang-off.
> & love that giant hairdryer sound.
>
>   Marty aka aa4rm
>
> * so's current draw is .150ma @ 12v
>




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