DAVE MCKAY G1JWG

RACAL COUGAR PRM4515 PROGRAMMING

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The PRM4515L is normally programmed using the PRM4073 Programmer. However these are rare and not normally available. The Radio uses a standard 93C46 EEprom. It should be possible to desolder the EEprom and put a socket in so the EEprom can be removed for programming or it can be reprogrammed in situ.

To this end Jacob PE2CJ has been doing some work on reverse engineering the code in the EEprom in the PRM4515L radios released on the Dutch surplus market.

His Cougar site (in Dutch) is here  

http://www.amateurtele.com/index.php?artikel=193

He has also produced an Excel spreadsheet for working out the code

http://THIS SITE IS NO LONGER BEING UPDATED
MY NEW SITE IS AT
WWW.RADIOHISTORY.UK /Cougarnet/amateurtelecom_PRM4515L_frequency_programming_20160831V2.xls

Another Dutch Ham Dave PA5DOF has been succesful in programming the PRM4515 using an Arduino Nano, the result of his efforts can be found here.

http://pa5dof.blogspot.co.uk/2017/01/program-racal-cougar-part-1.html

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 D. J. MCKAY G1JWG 2017