Technical Topics > Part 15 AM and FM Station Operation

DIP SWITCH PROGRAMMING

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TimL:
Hi everyone!  I'm a complete dunce when it comes to DIP switches and math in general. Does anyone know of a really dummies guide to programming an 8 switch? Or assist generally?  Many thanks.

ThaDood:
Unfortunately, that's a fairly broad question, since that all depends upon the circuit designer, and the type of PLL IC's used. Panaxis had their own scheme, with a DIP switch Chart for FREQ setting. Ransey Electronics Kits did that math equation with X100, X10, and X1, with Motorola PLL IC's. And, from what I'm told, those newer Chez Pocasters and, (I'm brainfarting on the Part 15 TX MFG'er...), still uses the DIP switch scheme. So, with the lack of documentation, may I suggest loading to a dummyload, with an attenuated RF sample OUT, to a FREQ counter and try it that way. BTW, there were several Two-Way radios that could be programmed that way as well. Hmmmmmmm... Back to transmitters, with DIP Switch FREQ settings, I probably should upload the Panaxis manuals to my Archive.org site.  Anyway... I hope that this helps. Oh yeah... Progressive Concepts may have manuals for their Part 15 transmitters.  https://progressive-concepts.com/product-category/am-transmitters/    Ah!!!! Rangemaster!!! That, was the one that escaped me.

ThaDood:
https://www.tompolk.com/radios/frequencysynthesizer/freqsynth.html   This page should help. THANK YOU Boomer!!!

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