Ok John.
Just Curious. Not trying to be a Smart a--.
Will you be at the Dayton Convention?
----- Original Message -----
From: La Rue Communications
To: [email protected]
Sent: Wednesday, May 12, 2010 3:35 PM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
Wesley -
I am the Web Sales Guru. Knox is teaching me the two way stuff. I am
gradually being trained to do the two way stuff (I know how to program and do
basic bench checks). Since he does all the servicing and repairs himself. I
only do a smidgen of the radio repairs, but I am on hand for the IT and Web
stuff. I learn about the equipment on my own since Knox is always busy and out
of the shop. The majority of our repair work are in the Analog radios - but
even now its surprisingly quiet with all our Agriculture clients out in the
field. Its only a matter of time before someone runs over their MaxTrac with a
plow or drops their portable into a big puddle. :-)
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
----- Original Message -----
From: Wesley Bazell
To: [email protected]
Sent: Wednesday, May 12, 2010 12:23 PM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
John,
Do you have any time to repair Radios? When I worked for a Motorola Shop.
sure didn't have time to play.
Wesley AB8KD
----- Original Message -----
From: La Rue Communications
To: [email protected]
Sent: Wednesday, May 12, 2010 3:00 PM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
Thanks Bill!
I was initially curious because I have a few Microwave Test equipment
pieces here in the shop that I have no idea what to do with. Specifically a
6GHz Pre-Amp and a Vintage Motorola Microwave Modulation Tester. (Not sure what
freqs the tester handles. Need to look again).
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
----- Original Message -----
From: Bill Smith
To: [email protected]
Sent: Wednesday, May 12, 2010 11:26 AM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
Microwave is having a resurgence in popularity. with the demand for
wireless data increasing and cellular networks becoming all digital, Microwave
is being used where it will be cost-prohibitive to install fiber. Companies
like Fiber Tower are providing microwave backhaul for some cellular companies
and instead of paying tens or even hundreds of thousands to pull in fiber, they
throw in a microwave link for $10,000-$15,000.
The microwave equipment of today is nothing like it used to be. The 11
GHz links I have are tower mounted radios and bolt right onto the back of the
dish. They have four separate radios built in for redundancy and only need a
single cat-5 cable to feed power and signal to them.
------------------------------------------------------------------------
From: La Rue Communications <[email protected]>
To: [email protected]
Sent: Wed, May 12, 2010 11:50:28 AM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
So in a nutshell, microwave is a band of precision and pinpoint
accuracy? Common sense that people shouldnt use wood for anything outside that
demands long-term stability. Not only do the elements cause warping, but also
prone to termites, etc. Wow!
Thanks for all the good input!
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
----- Original Message -----
From: DCFluX
To: [email protected]
Sent: Wednesday, May 12, 2010 9:43 AM
Subject: Re: [Repeater-Builder] Just curious... Microwave frequencies
Generally microwave is used for point to point communications such as
intercity links for telephone and studio to transmitter links for television
and radio stations.
The power generated by the transmitter is fairly low in the 10-100mW
range but the antenna gain of a dish is extremely high 30-40dB depending on
frequency and size of the dish, making a 100mW transmitter have an ERP that is
100 - 1000W. With that being said it is probably not a good idea to hang around
the appreture of the dish while one of these systems is running.
These frequencies are a challange because of the water vapor and rain
really like to absorb them and with antenna gain that high the beam width is
extremely narrow. I have a 6ft cookie that is .8 degrees wide. Longest path I
saw was 65 miles on 12 GHz, had 15 foot dishes on both ends.
Normal towers have a tendency to twist depending on wind and
temperature variations so its a good idea to mount the dishes with super thick
poles directly into the ground with concrete.
The local cable company put a system on 24 GHz that went 1 mile.
worked great until it rained and got humid, they mounted the dishes on wooden
phone poles and they twisted to the point where the link quit working.
On Wed, May 12, 2010 at 9:32 AM, La Rue Communications
<laruec...@gmail. com> wrote:
With that being said, how popular is the rest of the microwave
band? Is it one of the more dangerous bands if used improperly?
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl. com/2dtngmn
----- Original Message -----
From: DCFluX
To: Repeater-Builder@ yahoogroups. com
Sent: Wednesday, May 12, 2010 9:27 AM
Subject: Re: [Repeater-Builder] Just curious... Microwave
frequencies
No 800 band for hams, closest is 902-928 which is the 33cm ham
band, it is also used by ISM type devices such as cordless phones, baby
monitors, 802.11 internet and wireless video senders.
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl. com/2dtngmn
