Pico tuner help

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
cashy666
Posts: 57
Joined: Mon Aug 10, 2015 9:53 pm

Re: Pico tuner help

Post by cashy666 » Mon Aug 19, 2024 12:27 am

Hi all,

now working, Dave, Brian, Keith, Gareth and Mike.....thanks for all your help...
Reinstalled the software with a different SD card

Dave, the lightning bolt only started showing since I connected the Picotuner..will investigate...


Regards
Dave
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g6hfs
Posts: 294
Joined: Thu May 26, 2022 3:13 pm

Re: Pico tuner help

Post by g6hfs » Mon Aug 19, 2024 9:32 am

HI Dave,

Glad it's all working for you, perhaps see you on qo-100 sometime.

Brian

g4eml
Posts: 731
Joined: Thu Apr 26, 2018 9:36 am

Re: Pico tuner help

Post by g4eml » Mon Aug 19, 2024 10:31 am

The Picotuner (actually the NIM in the Picotuner) does take quite a lot of current if powered from USB. Technically it is more than is recommended for a USB device and may be pulling down the power supply you are using for the Portsdown.

If this proves to be a problem then the Picotuner can always be powered externally from 12V.

Colin G4EML

cashy666
Posts: 57
Joined: Mon Aug 10, 2015 9:53 pm

Re: Pico tuner help

Post by cashy666 » Thu Aug 22, 2024 1:31 am

Hi Colin,
thanks for the info....it did the trick..no lightning bolt!!!!

Brian, thanks for all your help....at the rate I build QO100 is a long way off....

Dave

G4HTZ
Posts: 237
Joined: Sat Aug 02, 2014 4:21 pm

Re: Pico tuner help

Post by G4HTZ » Sat Feb 01, 2025 4:30 pm

deleted due to my error
Last edited by G4HTZ on Fri Feb 14, 2025 9:07 am, edited 1 time in total.
Steve G4HTZ

ASHEN nr Sudbury JO02GB52 90m ASL

PORTSDOWN and a RYDE …

g0mjw
Posts: 2497
Joined: Sat Sep 20, 2014 9:15 am

Re: Pico tuner help

Post by g0mjw » Sat Feb 01, 2025 5:10 pm

D8 is just a diode and D6 is a TVS diode on the PCB, in the Schematic and in the BOM - are you reading the right files for V3?

G4HTZ
Posts: 237
Joined: Sat Aug 02, 2014 4:21 pm

Re: Pico tuner help

Post by G4HTZ » Sat Feb 01, 2025 5:26 pm

Deleted due to my error of reading circuit
Steve G4HTZ

ASHEN nr Sudbury JO02GB52 90m ASL

PORTSDOWN and a RYDE …

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