discone aerial

Post by **nitromad** » 27 Jun 2006, 14:17

Hi all
i just got my discone aerial off ebay it came with an short plastic pole that fixed to hub where to plug cable in ,my question is there any reasion why i can replace that with an longer metal or aluminum pole one i got in mind is off an old cb aerial it 32" long

so can or can't i ?

thanks for any help or advise given
Gavin

Post by **Andy** » 27 Jun 2006, 18:01

Yup - you can attach it to a nice long metal pole, Nitro. The higher up it goes, the more you'll receive.

Post by kc » 28 Jun 2006, 12:13

Use decent coax though.
RG58 will lose too much signal, especially at UHF.
I found that I was receiving things on my handheld antenna that I was not on the discone until I upgraded the coax.

Post by **nitromad** » 28 Jun 2006, 13:30

yeah i heard that about cable i ordered some low loss cable just waitting for the thing to come in post
EDIT i ordered normal RG58 cable not low loss

AHH any way what do you think of this stuff ???? http://cgi.ebay.co.uk/RG213-50-Ohm-Low- ... dZViewItem

thanks
gavin
EDIT END

YouTube · Post by **Transmission1** » 28 Jun 2006, 18:25

RG58 is fine for HF up to 30 MHz but the stuff you are looking at on ebay is much better for UHF, the only downside is the thickness of the cable, it's not very flexible and a bit of a pain to bring into the house unless you have some air vents with large holes that you can feed it in with.

I have used a reel of this stuff before: http://www.truck-king.co.uk/xcart/custo ... =36&page=1
it's got similar properties to RG213 but It's called Mini RG8/U and it's much thinner.

Regards
Simon

Post by **Andy** » 29 Jun 2006, 08:42

At the risk of scaring the horses, I've been using CT100 satellite cable on my scanner antennas for years. It's only a bit thicker than RG58, it's flexible and it has very low loss up to about 2GHz.
It's 75-ohm, but that soesn't make a jot of difference - the loss due to mismatch is only a fraction of a dB.:

RG58 : 7.6dB loss per 10m at 1000MHz
RG213: 2.6dB loss per 10m at 1000MHz
CT100: 1.8dB loss per 10m at 860Mz and 2.7cB at 1700MHz.

Post by **nitromad** » 30 Jun 2006, 08:40

Transmission1 wrote:
I have used a reel of this stuff before: http://www.truck-king.co.uk/xcart/custo ... =36&page=1
it's got similar properties to RG213 but It's called Mini RG8/U and it's much thinner.

Regards
Simon

i ordered some mini rg8/u off ebay it pain in butt to get pole up never mind aerial on top not going do more than once

discone aerial

discone aerial

ordered wrong cable

RE: ordered wrong cable

Re: RE: ordered wrong cable