Sirio 827 Radials

[thundercat]

Hello All
Ive currently got a Sirio 827 installed but haven't bothered with the rather long Radials (reason being i would have to lift it a fare bit to clear the roof of my house) do i need to install them? what benefits would i get if i did?

[ch25]

Without radials this antenna won't work.

[thundercat]

Without radials this antenna won't work.

No worries I’ll pop them on then, thanks for your reply

[The Collector]

You could always just put the ones on that don't interfere with your roof tiles etc. You might just lose 2 or three at most then which shouldn't make that much of a difference. Otherwise, hoik the aerial up another couple of feet if you can

[thundercat]

You could always just put the ones on that don't interfere with your roof tiles etc. You might just lose 2 or three at most then which shouldn't make that much of a difference. Otherwise, hoik the aerial up another couple of feet if you can

Good shout, I’ll try that before lifting it

[stanogs68]

Or remove a few roof tiles that are in the way ,just remember put them back if it rains

[thundercat]

Or remove a few roof tiles that are in the way ,just remember put them back if it rains

Living up norf I’d have to be quick

[The Collector]

If leaving a few 'planes out does the job, just ensure that the empty holes don't lead into the coil or anything, or you'll have to seal them up with some stubby bolts or some silicone sealant

[thundercat]

If leaving a few 'planes out does the job, just ensure that the empty holes don't lead into the coil or anything, or you'll have to seal them up with some stubby bolts or some silicone sealant

I’ve got all but two fitted and looking at the extra height I need to fit the remaining two, I’ll get it with a 5ft pole and mast joiner

[bigpimp347]

the 827 will work perfectly fine without radials.
they are mostly there for show and to help radiate the signal across the ground
if you mount it at it's correct height, a 5/8th off ground so around 20ft it will use the ground as it's ground plane.

[stanogs68]

thought they was for ssb

[thundercat]

the 827 will work perfectly fine without radials.
they are mostly there for show and to help radiate the signal across the ground
if you mount it at it's correct height, a 5/8th off ground so around 20ft it will use the ground as it's ground plane.

Is that 20ft to the tip of the aerial?

[ch25]

the 827 will work perfectly fine without radials.
they are mostly there for show and to help radiate the signal across the ground
if you mount it at it's correct height, a 5/8th off ground so around 20ft it will use the ground as it's ground plane.

You have no idea what you are talking about.

[bigpimp347]

the 827 will work perfectly fine without radials.
they are mostly there for show and to help radiate the signal across the ground
if you mount it at it's correct height, a 5/8th off ground so around 20ft it will use the ground as it's ground plane.

You have no idea what you are talking about.

nope of course not..
i've got two 827's (and thirty or more other base antennas) i build my own antennas.
maybe try it and see..
get an 827 remove the useless there for show radials and see what happens..
it still works.. what do you think the coil is for ? , it's matching system as you described in the 'silver rod' post.
the radials, like on a lot of Sirio antennas pretty much do bugger all..

[bigpimp347]

the 827 will work perfectly fine without radials.
they are mostly there for show and to help radiate the signal across the ground
if you mount it at it's correct height, a 5/8th off ground so around 20ft it will use the ground as it's ground plane.

Is that 20ft to the tip of the aerial?

no to the base..
the idea is use an antenna (without radials) a wavelength it is off ground,
so if it's a half wave, then 17ft, a 5/8th then around 20ft.

Cushcraft used the idea years ago on various VHF antennas where line of sight is more important
they just made the antennas ground a matched wavelength below it.