Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
Yes please Dave to pictures and a circuit diagram when you're ready. It's a grey area of the Portsdown project. I've been working with the suggestion on the band switching page of the Wiki because I don't know any better!
Regards
David M0YDH
Regards
David M0YDH
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
Will do David, it's a little way from finished yet but I've uploaded a short video to Youtube of first test. From left to right the LEDs are;
Blue = power
Green = power to bias tee
Yellow = RX line grounded
Orange = aerial changeover to TX
Red = TX amp enabled.
https://youtu.be/pibFievDoKw
73 Dave
Blue = power
Green = power to bias tee
Yellow = RX line grounded
Orange = aerial changeover to TX
Red = TX amp enabled.
https://youtu.be/pibFievDoKw
73 Dave
...are you sure I can't use a pair of 813's?...
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
Some pictures of my sequencer as promised. I'll draw up the circuit at some point this week.
73 Dave
73 Dave
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- 092018122832.jpg (134.97 KiB) Viewed 2850 times
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- 09201812296.jpg (233.04 KiB) Viewed 2850 times
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- 092018122921.jpg (254.98 KiB) Viewed 2850 times
...are you sure I can't use a pair of 813's?...
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
...are you sure I can't use a pair of 813's?...
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
OK here's the circuit diagram - not showing the coax relays (don't forget back emf diodes) or the on off switches (power and preamp power). I'm sure you can work the rest out for yourselves. As seen in the photo's I just used veroboard.
73 Dave
73 Dave
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- sequencer001.jpg (438.06 KiB) Viewed 2802 times
...are you sure I can't use a pair of 813's?...
Re: Developing the G8ADE sequencer [CQ-TV 125] for Portsdown
Very impressive Dave.
I connected the Portsdown to my relay sequencing circuit and was able to trigger the Mini-kits amplifier. 3 amps drawn. No power output. Next problem
I connected the Portsdown to my relay sequencing circuit and was able to trigger the Mini-kits amplifier. 3 amps drawn. No power output. Next problem