Monitoring Military Satellites With Scrap Metal Antenna

I've listened in on US Military Satcom in the past, but I wanted to try building a more permanent antenna for this frequency range. I'm following an old guide from Monitoring Times magazine, which you can find here: http://electronicsandbooks.com/edt/manual/Articles/Antennas%20Homemade/UHF_SatCom_omni_antenna.pdf
Update: Apparently that link is dead, but another source is here (2 parts):
https://diebastelkammer.wordpress.com/wp-content/uploads/2014/07/satcom-part-1.pdf
https://diebastelkammer.wordpress.com/wp-content/uploads/2014/06/satcom-part-2.pdf

You can find the handheld radio I'm using here: https://amzn.to/49MMOYd
And the HackRF One SDR here: https://amzn.to/4b0lZC9
Or a cheaper SDR option here: https://amzn.to/49Hd71P

You can listen to satcom pirates via WebSDR here (search for 260mhz receivers): https://rx-tx.info/map-sdr-points

Some of my prior Satcom videos:
https://www.youtube.com/watch?v=PDwiKLkGMjo
https://www.youtube.com/watch?v=EUuQwPAPR-E
https://www.youtube.com/watch?v=HT2i7mFpFxM

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