portsdown 4

[joefran7300]

Hello
I build the portsdown 4 and i like to connect (I am using the GPIO board also) the PE4302 variable attenuator, can any one tell me the connections please..
73's Joe 9H1GT

[radiogareth]

Does this help Joe?
https://wiki.batc.org.uk/Output_Attenuator
Gareth

[joefran7300]

Hi
Many thanks for the link..i will try to connected and tested..
73's Joe 9H1GT

[g6hfs]

These are good and work well.

https://www.ebay.co.uk/itm/256509851311 ... R4T3iJ6JZA

Brian

[joefran7300]

Hi Brian
Many thanks for the link and information..i will buy one off them..
Just like to ask one more question i build the portsdown with the Pluto and tested on my spectrum analyzer on 2.4Ghz and i can see the output of the pluto but when i put the modulation on carrier i do not any out put. May be i am doing something wrong as i am mew to the portsdown and i need to learn more on it..
73's
Joe 9H1GT

[radiogareth]

Joe, Have you got the correct firmware in the PD4? https://wiki.batc.org.uk/Portsdown_4_Pluto tells you what's needed, it can be checked from the PD4 menu system.
Gareth

[joefran7300]

Hi
I have to see and check as i am new to the portsdown..
many thanks
Joe

[joefran7300]

DATV i have output but on carrier no..

[joefran7300]

I think i found the reason why no carrier out put as it needs modulation to transmit as i found it on the PD4 from the BATC information on the PD4.

[joefran7300]

Hello
I am building the Ryde receiver and i have a problem how to connect the GPIO board to the Raspberry PI 4 as i can not understand the pins written
on the circuit diagram of the Ryde and the pins on the PI 4.
can any one give me some information please..
many thanks
Joe 9H1GT