[ARC5] BC-453-B dial accuracy

[WA5CAB at cs.com]

Skip,

My guess, as 6 KC is a bit much, is that it does not have its original coil 
rack.  What you could do, although it will be somewhat time consuming, is 
to find another coil rack (preferably a damaged one and for sure not a 
540-1500 one) and drill out the rivets so that you can have loose cans.  

Pull the coils out of the cans on the rack for your receiver, and plug them 
into the receiver individually.  Put the loose cans on over the coils and 
confirm that the receiver still works.  Then pull the can off of the 
oscillator coil and make a slight adjustment.  Put the can back on and see how much 
you moved it.  Repeat all afternoon.  :-)

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480

In a message dated 05/17/2017 21:35:35 PM Central Daylight Time, 
magnuson at mac.com writes: 
> First thanks to those of you who responded with suggestions and help.
>  I have reviewed the U-Tube videos, checked the settings on the padder 
> capacitors, and have redone an IF and RF alignment per the SCR-274-N manual.  
> The high side (520 kc) peaks right on but the low side (210 kc) peaks at 
> about 216 kc.  My check NDB is DPY at 365 kc and still reads about 8 kc high 
> on the dial.  Ken Gordon (often on this forum) helped me a lot in bringing 
> my 453 back to life told me the dial reading is usually very close.  So I 
> guess is still have some poking around for the cause.
> Kind of as a footnote, I am the FCC/FAA approved maintenance technician 
> for DPY having moved it from another airport (Felts Field, Spokane) to Deer 
> Park, WA, and got it all running.  I also fly and have used ADFs for years 
> so just for fun (?) maintain DPY.  I listen and log other NDBs just for fun 
> on the 453 also.
> 73, Skip W7WGM
> 
> 
> 
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