-Original Message-
From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED]
Sent: Sunday, March 28, 2004 5:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] UHF link
I've never had experience on UHF. any experience how far would a 50
watts UHF link (440 MHz) can get? Antenn
I can't help you much with the connection method, but I can give you an
example of how much power is needed to link repeaters. My IRLP node, located
at my house, is linked to the repeater using small beam antennas over a
distance of about 12 miles. Even with an intervening hill, it is done using
on
Line of sight should give you 100 miles with only 5-10 watts. I've done 65
miles with one watt.
Chuck
WB2EDV
- Original Message -
From: "Richard" <[EMAIL PROTECTED]>
To:
Sent: Sunday, March 28, 2004 9:31 PM
Subject: RE: [Repeater-Builder] UHF link
> I can&
Well I don't know how far one can link with 440. However I have a link of 50 miles with 10 watts. Fred KF4QZN - Original Message - From: dy3lmk143_13mhz Sent: Sunday, March 28, 2004 7:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] UHF link I've never had exp
Here in Southern California & the surrounding border-areas, there are
several systems with long paths on 420MHz (the same as 440MHz path
behavior). One of the longest is ~165 miles @ 13W before duplexer/feedline
losses. 10-20W is quite typical for links, and 50W is overkill for most.
Most of t
ake out the 927 repeaters and
links.
Very best of 73,
Russ, W3CH
- Original Message -
From: "Tedd Doda" <[EMAIL PROTECTED]>
To:
Sent: Monday, March 29, 2004 10:41 AM
Subject: Re: [Repeater-Builder] UHF link
> On Mon, 29 Mar 2004 09:31:02 -0500, russ wrote:
>
> >W
On Mon, 29 Mar 2004 09:31:02 -0500, russ wrote:
>We are going to change it from 420
>MHz to 927 MHz over the week end of April 4th.
Hi Russ:
What are you using for radios? Also, any foreseen problems
from cordless phones?
Thanks,
Tedd Doda, VE3TJD
Lazer Audio and Electronics
Baden, Ontario,
Message -
From: <[EMAIL PROTECTED]>
To:
Sent: Sunday, March 28, 2004 10:31 PM
Subject: Re: [Repeater-Builder] UHF link
>
> Here in Southern California & the surrounding border-areas, there are
> several systems with long paths on 420MHz (the same as 440MHz path
> behavior).
ril 4th.
> We will keep every one posted as to how we make out the 927 repeaters and
> links.
> Very best of 73,
> Russ, W3CH
>
> - Original Message -
> From: "Tedd Doda" <[EMAIL PROTECTED]>
> To:
> Sent: Monday, March 29, 2004 10:41 AM
> Subj
are linking at 2.5 all through a Link-Comm
controler. But it should work. Smile.
Thank you for the heads up.
Very Best of 73
Russ, W3CH
- Original Message -
From: "Pete Dziomba" <[EMAIL PROTECTED]>
To:
Sent: Monday, March 29, 2004 8:08 PM
Subject: Re: [Repeater-B
I doubt if you would get repeater council approval to link at that power
level, most linking is done 15-20 miles with 3-5 watts and then someone
might turn it up to 10 watts to overcome foliage and insure a reliable
path in horrible weather.
dy3lmk143_13mhz wrote:
>
> I've never had experience on
Why? (why don't you think it would get approved?) You are only talking
about a 10 dB difference. (7 dB over 10W) That's not a lot of overhead.
Joe M.
Virden Clark Beckman wrote:
>
> I doubt if you would get repeater council approval to link at that
> power level, most linking is done 15-20 miles
You can try lowering the antenna.
You can try a better antenna, one with a better front to back ratio
and better side lobe rejection.
If that does not work, you can try something that we do to our
microwave dishes when we receive off axis interference, place a
shield near the side of the yagi
Although it really only masks the problem, you can use CTCSS tone to avoid
hearing the distant transmitter. Of course, the repeater you're linking to
must encode CTCSS, and your link must decode it.
A more technical approach is to use a modest-gain Yagi antenna pointed
directly at the offending t
> For now I received permission to link directly on their input until
> the club installs a remote base and yagi next spring.
>
> There repeater is about 20 air miles away. I am using a 5 element UHF
> Yagi about 45 feet up a 170 Rohn 65 at my hub site!
>
> The Yagi is facing due West. The link
Len
Try orienting the yagi horizontally. That should increase side rejection of
the offending signal.
Jeff - - NJ5R
--- On Sun, 9/28/08, n2len <[EMAIL PROTECTED]> wrote:
From: n2len <[EMAIL PROTECTED]>
Subject: [Repeater-Builder] UHF LINK ANTENNA QUESTION HELP NEEDED!
To: Repeater-Builder@yahoo
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