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 Post subject: Re: On AM radio alignment the bands end and begin dont match
PostPosted: Dec Fri 01, 2017 10:05 am 
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Location: SoCal, 91387
Kennynva wrote:
what is the upper left trimmer used for...lower right is oscillator, lower left and upper right is antenna adjust ,,,but nothing is for the upper left trimmer...

That's right Kenny; it means you don't mess with it. :wink:

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 Post subject: Re: On AM radio alignment the bands end and begin dont match
PostPosted: Dec Fri 01, 2017 2:26 pm 
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majoco wrote:
Yes, but it shows four circles on the back of the tuning cap "M2" but the top left 'trimmer' is not annotated nor mentioned in the alignment instructions - perhaps it would be mentioned in the two-band model as a trimmer for the marine band.

Perhaps they just used an available part that had one more adjustment than needed.....

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 Post subject: Re: On AM radio alignment the bands end and begin dont match
PostPosted: Dec Fri 01, 2017 10:46 pm 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 237
Location: shirley NY...Long Island
I would say so....that they just used up parts that fit other radio's like the 6519, that has the marine band...I would think it is not connected to anything...its just there...

Well, guess what guy's...I adjusted both ends as per alignment instructions...as 530 on the low end and 1650 on upper...and I am ok with it...after all this....

I have two of these rado's,,,one is a 6515, and the other 6515A, and I think the 'A" version seems to pull in stations better than the plane 6515. I dont know what changes they did to the A version...or it's just in my mind that it's better...

I also have the 6528 version that is much smaller, and uses 3 AA batteries...

Kenny


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 Post subject: Re: On AM radio alignment the bands end and begin dont match
PostPosted: Dec Sat 02, 2017 9:07 am 
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Location: SoCal, 91387
Kennynva wrote:
I have two of these rado's,,,one is a 6515, and the other 6515A, and I think the 'A" version seems to pull in stations better than the plane 6515. I dont know what changes they did to the A version...or it's just in my mind that it's better...


I have multiples of a number of Transistor models, and I can tell you that some just work better than others. I would believe that they all left their factories performing equally to each other, or close to it, but how they then spent the next half century is most likely the game-changer.
I speculate that those in damp or cold geographic areas may have had their Transistors deteriorate more so than those kept in warm, dry climates.

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 Post subject: Re: On AM radio alignment the bands end and begin dont match
PostPosted: Dec Sun 03, 2017 12:18 am 
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Joined: Dec Tue 08, 2015 12:53 am
Posts: 237
Location: shirley NY...Long Island
I totally agree.............and whether(I guess that is how it is spelled) played wide open..or battery leakage, or just sitting like you said...I would think the damp, cool environment is the killer for germanium...transistors..and caps..


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