Re: [Drakelist] DRAKE R7A problem on change frequency band.
It could also be as simple as the molex pins on the digital readout board. Pry the board out a bit and re-seat them. Look the pins over for any cracks in the solder. Good luck! Darrel, N0DBX On 08/23/2018 11:49 AM, DW Harms (Dick) wrote: Ciao Demis, your PLL needs adjustment I think 😉 You know how to do that? 73, Dick PA2DW Op 23 aug. 2018 om 18:29 heeft Demis Bertoni het volgende geschreven: Hello! I've a Drake R7A with a problem on changing frequency band. What happens is shown below: BAND SWITCH DISPLAY 0-0.5 0-500 OK 0.5-1.0500-1000 OK 1.0-1.5 1000-1500 OK 1.5-2.0 99500-0 ? 2.5-3.0500-1000 ? 3.5-4.0 1500-2000 ? 5.0-5.5 5000-5500 OK 7.0-7.5 5000-5500 ? 14.0-14.5 11500-12000 ? 21.0-21.5 21000-21500 OK 28.5-29.0 26500-27000 ? Please someone who can help me solve the problem? Thank you and 73! Demis IZ4ORS IZ4ORS - Demis Bertoni Via Rebecchi, 13 - 41015 Nonantola (Modena) - Italy ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] DRAKE R7A problem on change frequency band.
Dennis: Have you tried reseating all of the boards. The R7's and TR7's suffer from oxidation on the board connectors. Simply removing and replacing each board typically fixes problems like you are experiencing. Do the same to each of the cable connectors to each board as well as the power supply board hiding behind the antenna switch on the right side of the front panel. 73 es GL Lee WB6SSW -Original Message- From: Demis Bertoni To: drakelist Sent: Thu, Aug 23, 2018 9:30 am Subject: [Drakelist] DRAKE R7A problem on change frequency band. Hello! I've a Drake R7A with a problem on changing frequency band. What happens is shown below: BAND SWITCH DISPLAY 0-0.5 0-500 OK 0.5-1.0500-1000 OK 1.0-1.5 1000-1500 OK 1.5-2.0 99500-0 ? 2.5-3.0500-1000 ? 3.5-4.0 1500-2000 ? 5.0-5.5 5000-5500 OK 7.0-7.5 5000-5500 ? 14.0-14.5 11500-12000 ? 21.0-21.5 21000-21500 OK 28.5-29.0 26500-27000 ? Please someone who can help me solve the problem? Thank you and 73! Demis IZ4ORS IZ4ORS - Demis Bertoni Via Rebecchi, 13 - 41015 Nonantola (Modena) - Italy ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] DRAKE R7A problem on change frequency band.
Ciao Demis, your PLL needs adjustment I think 😉 You know how to do that? 73, Dick PA2DW > Op 23 aug. 2018 om 18:29 heeft Demis Bertoni het volgende > geschreven: > > Hello! > I've a Drake R7A with a problem on changing frequency band. > What happens is shown below: > > BAND SWITCH DISPLAY > 0-0.5 0-500 OK > 0.5-1.0500-1000 OK > 1.0-1.5 1000-1500 OK > 1.5-2.0 99500-0 ? > 2.5-3.0500-1000 ? > 3.5-4.0 1500-2000 ? > 5.0-5.5 5000-5500 OK > 7.0-7.5 5000-5500 ? > 14.0-14.5 11500-12000 ? > 21.0-21.5 21000-21500 OK > 28.5-29.0 26500-27000 ? > > Please someone who can help me solve the problem? > Thank you and 73! > Demis IZ4ORS > > > > IZ4ORS - Demis Bertoni > Via Rebecchi, 13 - 41015 Nonantola > (Modena) - Italy > ___ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist ___ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
