TV antennas are another thing where size matters. Yes a 9" round antenna will receive DTV signals... depending on how far you are away from the station and how high the TV xmit tower is. The Shakesphere 2030 is 22" round, also with a built-in preamp. I have found that the Shakesphere 22" still received the (Baltimore) TV stations nearly twice as far away as the 9" UFO antenna as I sailed South down Bay toward Norfolk. I had the UFO mounted on my mizzen spreader already and had just purchased the 22" Shakesphere in order to improve my tv reception
at my St Michaels home port. I have mast steps up my mizzen and being a retired communications engineer
and a avid ham radio
person I'm always adding/ changing experimenting with various amateur radio
antennas on my midden 'radio tower.' So I temporarily rigged the new 22" antenna on the opposite side of the spreader and ran coax temporarily through the step holes and into a aft hatch
to and A/B switch to make the test easier. When I saw the difference, I moved the Shakesphere up to the top of the mizzen.
This required removing my existing top mounted back-up VHF
marine vertical and making a 30" X 3" X 1/4" aluminum
arm with three antenna mounts (typical 1" threaded mounts)... the 22" round TV antenna took center stage and up on an addition 12" extension (TV antennas need a little elbow
room to work best). The former VHF
marine vertical took the port end and my current
2 meter/ 440 ham antenna took the starboard end. I now get 60 TV program streams (some 'channels' squeeze 3 or 4 program streams in their bandwidth when not transmitting HD.
One more thing... as you travels take you into new areas, you must do a rescan on your tv for it to find where/ who all the new market TV stations are or it will be stuck trying to tune the now too far away stations and you won't get anything.
What's nice about these 'sub-channels' is many tv stations now use them to transmit a 24/7 local wx channel with live wx radar
and many have either a (old) movie
or old sit-com sub-channel.
My brother installed the same Shakesphere 22" antenna on his mizzen and goes down ICW
to Ft Lauderdale every Winter. He gets all the main networks and 3-4 independents every place they anchor
along the way.
I've helped others install the same antenna on a sloop
rig and like you they didn't have much real estate at top of mast. For these I had a local weld shop make a curved 'side mount' bracket with 13" side arm w/ typical 1" threaded antenna mount at its end. OK... might look a little strange but they all get great TV reception.
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