Portsdown PTT and band switching

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
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g8gtz
Posts: 1776
Joined: Wed Apr 07, 2010 6:26 pm

Portsdown PTT and band switching

Post by g8gtz » Tue Jan 31, 2017 10:24 am

The wiki has been updated with details of a circuit to decode the GPIO pins to perform band switching as seen on the KLB show on 29th January :D
https://wiki.batc.tv/PTT_and_band_switching

We are currently proposing that this will be built on strip board or home made PCB but the BATC shop could stock a blank PCB if there was enough interest.
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G4OHV
Posts: 37
Joined: Sat Oct 08, 2011 10:31 pm

Re: Portsdown PTT and band switching

Post by G4OHV » Tue Jan 31, 2017 2:25 pm

I would be interested in a blank PCB

Col
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rossi44
Posts: 4
Joined: Fri Jun 05, 2015 4:01 pm

Re: Portsdown PTT and band switching

Post by rossi44 » Tue Jan 31, 2017 3:32 pm

YES Please put me down for 2 boards.
Steve
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cashy666
Posts: 57
Joined: Mon Aug 10, 2015 9:53 pm

Re: Portsdown PTT and band switching

Post by cashy666 » Tue Jan 31, 2017 11:25 pm

Me too.....need all the help I can get!!!!!!!
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keng8vdp
Posts: 145
Joined: Tue Mar 15, 2016 8:51 am

Re: Portsdown PTT and band switching

Post by keng8vdp » Fri Feb 03, 2017 7:16 pm

Add me please
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g8gtz
Posts: 1776
Joined: Wed Apr 07, 2010 6:26 pm

Re: Portsdown PTT and band switching

Post by g8gtz » Wed Feb 08, 2017 12:29 pm

EDIT PCBs are on order Not true - got confused with another board.

But the wiki has been updated to include a simple circuit using relays and diodes to use the band outputs to steer the PTT line to the correct PA etc. https://wiki.batc.tv/PTT_and_band_switching
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