What's the best small diameter (0.25) low loss coax? I need to run
about 30' from my GPS antenna to a TBolt.
Best,
Dick
If the antenna has a pre-amp, then just use satellite TV cable, even
though the losses and impedance aren't quite what you might like.
Cheers,
David GM8ARV
--
SatSignal
What's the best small diameter (0.25) low loss coax? I need to run about 30'
from my GPS antenna to a TBolt.
Best,
Dick
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If your antenna has a preamp, then most any coax will do, but if you must, try
LMR-240.
73, Dick, W1KSZ
-Original Message-
From: Dick Moore rich...@hughes.net
Sent: Jun 12, 2011 12:33 PM
To: time-nuts@febo.com
Subject: [time-nuts] Lowloss cable?
What's the best small diameter (0.25
We used to use RG-9 at Odetics/Zyfer. What gain is your antenna?
Rob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Dick Moore
Sent: 12 June 2011 8:34 PM
To: time-nuts@febo.com
Subject: [time-nuts] Lowloss cable?
What's the best
High Dick,
Without giving away the bank, the LMR series of coax is pretty good. But in
reality a high quality version of the
RG-6 Cable TV coax used by the better Cable companies is quite acceptable. If
your local Cable company is one of
those, you can usually tag one of the work trucks and
LMR-240 is a good choice. Attenuation is ~10dB/100'. But if you can
tolerate larger diameter, LMR-400 will cut that in half.
On Sun, Jun 12, 2011 at 3:33 PM, Dick Moore rich...@hughes.net wrote:
What's the best small diameter (0.25) low loss coax? I need to run about
30' from my GPS
I got a T-bolt from i.fluke. The antenna came with a length of
50 ohm rg58. I added 75' of TV style rg6 and it works fine
with no amplification needed beyond that in the antenna.
It did not seem to mind the 50 to 75 oh mismatch.
I did notice with the first T-bolt I got that it could not see
Dick wrote:
What's the best small diameter (0.25) low loss coax?
How nuts do you want to get? You shouldn't need anything better than
a good RG-59 (75 ohms) for a 30' run. For that, I'd probably use
Belden 1426A if I were restricted to 0.25. Good foam RG-6 (also
75 ohms) like Belden
rich...@hughes.net said:
What's the best small diameter (0.25) low loss coax? I need to run about
30' from my GPS antenna to a TBolt.
There are two sources of attenuation. One is the dielectric losses. The
other is resistance, primarily skin effect on the center conductor.
Most modern
-
From: Hal Murray hmur...@megapathdsl.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, June 13, 2011 1:38 PM
Subject: Re: [time-nuts] Lowloss cable?
rich...@hughes.net said:
What's the best small diameter (0.25) low loss coax? I need to run
On 6/12/11 7:57 PM, Dave Brown wrote:
For a given OD the centre conductor will be SMALLER diameter for 75 ohm
cable wrpt 50 ohm cable.
Google for the whole minimum loss/highest power xfer capability etc
issue as regards coax cable diameter and impedance. All std textbook
stuff. Or used to be!
On Sun, Jun 12, 2011 at 12:33 PM, Dick Moore rich...@hughes.net wrote:
What's the best small diameter (0.25) low loss coax? I need to run about
30' from my GPS antenna to a TBolt.
Low loss and a 0.25 diameter don't go together. The loss generally
depends on the diameter. The way to figure
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