144 Mhz Cubical quad SSB end - UK Vintage Radio Repair and Restoration Discussion Forum

Malcolm T · 5th Aug 2022, 7:19 am

I'm back on it again a year later! Hoping to get this aerial working for some SSB operation on a lift, there have been some reports of some very good VHF propagations during this hot weather.
However following a design page where the frequency is typed in and you magically get the correct dimensions and spacing it flopped dramatically. I adjusted the driven element so it is now 70mm longer in total length and re-spaced the gamma match, it now appears to work well but i'm not sure about adding a tuning stub to the reflector or how this thing should be adjusted as a procedure ie steps 1 2 3 etc .
So are there any VHF gurus out there who have cubical quad experience?

rambo1152 · Yesterday, 11:11 am

I love it when the empiric triumphs over sums

5th Aug 2022, 7:19 am	#1
Malcolm T Hexode Join Date: Dec 2018 Location: Lugo, Spain Posts: 268	144 Mhz Cubical quad SSB end I'm back on it again a year later! Hoping to get this aerial working for some SSB operation on a lift, there have been some reports of some very good VHF propagations during this hot weather. However following a design page where the frequency is typed in and you magically get the correct dimensions and spacing it flopped dramatically. I adjusted the driven element so it is now 70mm longer in total length and re-spaced the gamma match, it now appears to work well but i'm not sure about adding a tuning stub to the reflector or how this thing should be adjusted as a procedure ie steps 1 2 3 etc . So are there any VHF gurus out there who have cubical quad experience?

Yesterday, 11:11 am	#2
rambo1152 Dekatron Join Date: May 2010 Location: Manchester, UK. Posts: 3,355	Re: 144 Mhz Cubical quad SSB end I love it when the empiric triumphs over sums __________________ -- Graham. G3ZVT