Now for the waffle, I was in Bolton some 19-20 years ago now in the Blackburn area. I wonder if I passed details of some surplus microwave kit on to you Mike many years ago. I worked for Pye Telecoms when it existed, then for a Motorola style company called Pennine Comms, then one that got taken over several times, (Tactico, National Telecomms and finally Alcatel) before moving to an independent for 27 years in Leyland, Lancashire. Worked along side companies like Granger years ago, one amongst several other companies. I found being a radio ham and doing radio as a job and being asked to do repairs or "can you get, do you have" to be soul destroying so I dropped the hobby and every thing with it completely.
But I have retired and I am looking back to the original interest for myself, location is in a valley, so looking to the sky for assistance.
Hello John, yes I remember you from many years ago, last time I saw you was in a caravan if I have the correct person? Not had contact with any of the old crowd literally since that period. Robin, Melvin? Peter. Alan and a guy that broke electronics down to components and scrap metal. In fact I would probably have done most things to stay away as said I dropped the hobby completely. The last real time i can remember was playing 70 cms am ATV.
Purchased the POTY KIT and assembled as instructions.
Double check the 3mm spacing between plates all looking good.
My dish is a prime focus 1.8M F/D Ratio 0.38 Focus Length 68.4cm
I am using a 2 turn Helix dual feed with my Octagon LNB which is working well.
The dual feed POTY patch antenna doesn’t come close the 2 turn Helix on TX and on RX works better with the lens attached which instruction say isn’t necessary on a prime focus dish.
Hope someone who can help.
Willi, HB9PZK did an analysis:
10 GHz without a lens:
I suffer with dyslexia and couldn't see anything wrong.
Now having compared with other pictures and can see the problem.
I will correct the construction and try again.
Thanks for your help.
What did you do wrong? This is interesting as if you had it configured for the wrong polarisation - i.e patch upside down and it matched but worked really badly, that is really good to know as it would imply the polarisation is circular, just the wrong sense.
Nevertheless. and So next to do is a simple adaptor for 40mm and give it a try. I think the 105mm disk may fowl the support arm in which case a rethink on the support, but I want to see what difference it makes to RX comparing the beacon.