[Milsurplus] RBO-2 "Escutcheon Cover" - Primary Source Information

[Nick England]

Well, I have to eat my words about it not being an RF shield. If I read you
correctly, it keeps RFI from getting INTO the RBO. I never thought about it
going that way.

Good detective work, Mike.

Thanks
Nick

On Sat, Jun 12, 2021 at 12:25 PM Mike Morrow <kk5f at earthlink.net> wrote:

> Nick, for two days the milsurplus list has not processed the several
> attempts I've made to post the RBO-2 information below.  If this attempt
> also fails, please post it for me.
>
> Thanks.
> Mike / KK5F
>
> -----Original Message-----
> From: Mike Morrow kk5f at earthlink.net
> Sent: Jun 11, 2021 7:36 PM
> To: milsurplus at mailman.qth.net
> Subject: RBO-2 "Escutcheon Cover" - Primary Source Information
>
>
> The Navy Type Number Book 900109 section 3.46 says this about that:
>
> CZC-46225 RBO-2 RADIO RECEIVER
> SAME AS CZC-46224 [RBO-1] EXCEPT
> (1) 6K6-GT TUBE REPLACED BY 6V6-GT
> (2) ANTENNA INPUT CIRCUIT MODIFIED
> (3) HiNGED COVER WILL BE FASTENED OVER DIAL ESCUTCHEON ON FRONT PANEL TO
> SHIELD AGAINST INTERFERENCE.
>
> It appears that the cover solved a shipboard RF interference problem to
> the RBO-2.  It also appears that the cover was only on the RBO-2 CZC-46225
> and RBO-3 CZC-46225-A.
>
> Mike / KK5F
> (Several earlier attempts to send this info since Thursday afternoon have
> disappeared.
>
>
> --
Nick England K4NYW
www.navy-radio.com
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