[Racal] Re: RACAL L55 cores

[John Bernaerts]

Hi all,
Maybe you can try to contact Steven Whiting or Rob Filby at the following
links:

http://homepage.ntlworld.com/steven.whiting/RobFilby.htm

or
http://homepage.ntlworld.com/steven.whiting/racalidx.htm



>    1. RA17 L55 cores (G4GJL)
>
> --__--__--
>
> Message: 1
> From: "G4GJL" <G4GJL@btopenworld.com>
> To: <racal@mailman.qth.net>
> Date: Mon, 10 Feb 2003 18:50:43 -0000
> Subject: [Racal] RA17 L55 cores
>
> I am working on a RA17 which is showing continual drift in the second =
> VFO. Having eliminated all components bar the coil, L55 and the tuning =
> capacitor in the 2nd VFO box, I feel the problem might be the coil =
> itself.=20
>
> Another list member said he had this problem, and eliminated it by =
> changing out L55 complete.
>
> QUESTION 1 : Has any one else had the same problem? (might also affect =
> RA117)
>
> QUESTION 2 : Does any one know if Ferrite or iron dust cores can go =
> unstable with age?  (other than mechanical breakage of the slug or its =
> mount)
>
> 73
>
> Pete
> G4GJL=20
>
>
>  Message: 2
> From: "polkram" <polkram@it.pl>
> To: <racal@mailman.qth.net>
> Date: Mon, 10 Feb 2003 20:36:28 +0100
> Subject: [Racal] filters
>
> I have two RA 1772 receivers both in excelent conditions, one of them
> schould be equiped with 0.3 kHz cw filter (1.4 MHz). Unfortunately the 0.3
> kHz filter does not exist on the board.
> Where I can buy such filter,  or if anybody can offer me a spare one?
> Any help or suggestion welcome.
>
> Jacek Kubiak
> SP5DRH
> polkram@it.pl
>
>
>