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

[Mike Morrow]

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.