[600MRG] ICOM R70 Receiver, continued

[Edward R Cole]

Frank,

Why not find out what the memory PS outputs (My guess is 
5vdc).  Break the line and add a rechargeable battery.

73, Ed

At 05:24 PM 7/1/2016, Frank Lotito wrote:
>TKS for the suggestions guys.  It looks like the successor model, 
>the ICOM R71 had a battery powered memory backup feature.  The R70, 
>which is my model, did not have such a feature.  The R70 schematic 
>does show two AC line operated power supplies. One of which is 
>titled "memory." If there is a rechargeable battery shown on the 
>schematic, I have yet to find it.  I can find no mention in the R70 
>manual of a back-up battery.
>
>
>Bill Isakson suggested that my receiver's loss in memory was due to 
>the manner in which I was turning off the receiver.  He asked if  I 
>was killing the line voltage to a power strip.  YES INDEED, that's 
>what I am doing!  I guess if the AC line was live, and I turned off 
>the receiver using the front panel power switch, the so-called 
>"memory power supply" would be live. Thus on turn-on, the receiver 
>would remember where it left off.  Mystery solved.
>
>
>However, in the interest of "safety," I will not discontinue the use 
>of the "big kill-all switch" in my shack. I'll spend the half minute 
>or so to redo the frequency and mode where I left off.
>
>
>Thanks again for your suggestions-
>
>
>   73 Frank K3DZ / WH2XHA
>
>
>
>_______________________________________________
>600MRG mailing list
>600MRG at w7ekb.com
>http://w7ekb.com/mailman/listinfo/600mrg_w7ekb.com

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     dubususa at gmail.com