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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 20th Sep 2018, 10:55 pm   #1
Sparky67
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Default Park Air PAE 5100 Frequency Selection

Hi all,
Can anyone help with the calculation / settings for the five hex switches to set a particular freq on a PAE 5100 air-band Rx please?
Thanks,
Martin
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Old 21st Sep 2018, 2:40 pm   #2
dodgy-dxer
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Default Re: Park Air PAE 5100 Frequency Selection

Look up previous Park Air threads

There is another Martin, living in Thailand, who helped the last person

Fred
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Old 21st Sep 2018, 8:30 pm   #3
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Default Re: Park Air PAE 5100 Frequency Selection

I used to work for Park Air but retired 5 years ago.
I was the sole person repairing them in the factory as customer services enginer.
Even I couldn't get any information after I left. As soon as you leave, that is it. The support was discontinued soon after I left anyway. So it is pointless even asking them.
You will need to look up the pll info and reverse engineer it if you can.
Nice radios though.
Good luck.
Rob
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Old 22nd Sep 2018, 1:58 am   #4
Damien VK3RX
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Default Re: Park Air PAE 5100 Frequency Selection

PM sent.
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Old 22nd Sep 2018, 10:32 am   #5
Sparky67
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Default Re: Park Air PAE 5100 Frequency Selection

Thanks gents, and for the PM Damien. A copy of the service manual has now been sent over from Thailand. Your help is much appreciated.
Cheers,
Martin
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Old 22nd Sep 2018, 10:45 am   #6
Damien VK3RX
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Default Re: Park Air PAE 5100 Frequency Selection

Glad to hear
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Old 23rd Sep 2018, 6:18 pm   #7
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Default Re: Park Air PAE 5100 Frequency Selection

If it helps anyone in the future, the answer to my original question for 12.5kHz-spaced sets is...

(a) Divide (Operational receive frequency + 21.4 MHz) by 12.5 kHz
(b) Convert the result of (a) into a Hexadecimal code.
(c) Subtract the result of (b) from Hexadecimal code FFFFF.
(d) Enter the result of (c) into the Hexadecimal switches 3 to 7 on the synthesiser.

The synth, RF converter and IF may then need realigning following a freq change.

Martin
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