riginal Message -
From: "Mario Pommier" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Sunday, March 18, 2007 11:19 AM
Subject: Re: [WISPA] LMR600, LMR900, Heliax
Bob (or anyone),
Can you explain why 7/8 heliax isn't appropriate for 5Ghz?
Thanks for the po
Bob (or anyone),
Can you explain why 7/8 heliax isn't appropriate for 5Ghz?
Thanks for the posts.
Mario
Bob Moldashel wrote:
OK.Lets talk cable
1. You can't use 1 1/4 or 1 5/8 heliax at 5 Ghz anything. Can't use
7/8 heliax there either. You canbut it won't work right
I thought that there was some formula like that out there. Thanks for
posting it!!
marlon
- Original Message -
From: "Eric Albert" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Saturday, March 17, 2007 8:10 PM
Subject: RE: [WISPA] LMR600, LMR900, Helia
Sorry I am not quoting inline- it was getting a bit cluttered.
Good points, Bob.
The brand new cell tower surplus isn't that readily available here. Oh I
see it... cut into 20 ft lengths at the recycling place. Saw some
elliptical waveguide there last week. Made me sick, but I couldn't have
aff
: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of George Rogato
Sent: Saturday, March 17, 2007 11:56 AM
To: WISPA General List
Subject: Re: [WISPA] LMR600, LMR900, Heliax
What about 5 gig
Are you doing long runs and amps at 5gig?
Blair Davis wrote:
> We use both methods, depending on how h
Original Message -
From: "Bob Moldashel" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Saturday, March 17, 2007 8:06 PM
Subject: Re: [WISPA] LMR600, LMR900, Heliax
Inline
Ralph wrote:
If EVERYONE is misled, then EVERYONE needs a lesson in ra
chnology that was designed for in-building LANS and doing
>remarkable things with it. A few years ago it was a pipe-dream to be able to
>do this stuff. Now we do it with off the shelf devices and do a damn good
>job.
>
>Let's just make sure we set the good example!
>
>
&g
the shelf devices and do a damn good
job.
Let's just make sure we set the good example!
(wow- I feel like Patrick)
-----Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of JohnnyO
Sent: Saturday, March 17, 2007 8:32 AM
To: 'WISPA General List&
e
stander.
Ralph
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Marlon K. Schafer
Sent: Saturday, March 17, 2007 5:46 PM
To: WISPA General List
Subject: Re: [WISPA] LMR600, LMR900, Heliax
Not all amps are illegal guys. Sheesh.
Yes they have to be included
y, March 17, 2007 5:46 PM
To: WISPA General List
Subject: Re: [WISPA] LMR600, LMR900, Heliax
Not all amps are illegal guys. Sheesh.
Yes they have to be included in the system certification and can't be mix
and matched like antennas.
But that doesn't make them illegal!
marlon
--
WISPA
"WISPA General List"
Sent: Saturday, March 17, 2007 3:04 PM
Subject: Re: [WISPA] LMR600, LMR900, Heliax
As for AMPs
If we put aside the fact that the AMP will result in a non-certified
system Shiren (allrfcables.com) makes a real cool AMP.
Its inexpensive, and tiny. Its got an ou
any tower installs, due to the fact that
he is doing unsafe construction methods on towers...
Regards,
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 5:47 PM
To: 'WISPA General List'
Subject
; way to do
things. Therefore I call it B *cough cough* S
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 5:47 PM
To: 'WISPA General List'
Subject: RE: [WISPA] LMR600, LMR900, Heliax
If EVERYO
Broadband
- Original Message -
From: "JohnnyO" <[EMAIL PROTECTED]>
To: "'WISPA General List'"
Sent: Saturday, March 17, 2007 8:31 AM
Subject: RE: [WISPA] LMR600, LMR900, Heliax
Jeez Ralph - your post is misleading to EVERYONE that is reading this.
able things with it. A few years ago it was a pipe-dream to be able to
do this stuff. Now we do it with off the shelf devices and do a damn good
job.
Let's just make sure we set the good example!
(wow- I feel like Patrick)
-Original Message-
From: [EMAIL PROTECTED] [mailto:
ashel" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Saturday, March 17, 2007 5:15 PM
Subject: Re: [WISPA] LMR600, LMR900, Heliax
OK.Lets talk cable
1. You can't use 1 1/4 or 1 5/8 heliax at 5 Ghz anything. Can't use 7/8
heliax there either. You can...
OK.Now for the lesson in CABLE :-P
You can't use 1 5/8 heliax above 2.5 Ghz. Its not rated for it. And
forget 5 Ghz. Won't work.
5/8 heliax MAX at 5 Ghz and above.
-B-
Ralph wrote:
You can buy them at Tessco, I'm pretty sure. Stick with Heliax (r) type
cables (hard lin
OK.Lets talk cable
1. You can't use 1 1/4 or 1 5/8 heliax at 5 Ghz anything. Can't use
7/8 heliax there either. You canbut it won't work right
2. You can use 5/8 heliax at 5.8 Ghz and below.
3. LMR900 is the largest Times cable you can use at 5.8Ghz.
4. You can use 1 1/4 H
The damn Yankee Bob M uses heliax and 5.8ghz all the time...
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of George Rogato
Sent: Saturday, March 17, 2007 10:56 AM
To: WISPA General List
Subject: Re: [WISPA] LMR600, LMR900, Heliax
What about
m: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 8:38 AM
To: 'WISPA General List'
Subject: RE: [WISPA] LMR600, LMR900, Heliax
You can buy them at Tessco, I'm pretty sure. Stick with Heliax (r)
type
cables (hard line) for those distan
ion is completely
different and the only reason JohnnyO decided to take on this mule
headed post :)
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 8:38 AM
To: 'WISPA General List'
Subject: RE: [WISPA
ed to take on this mule
headed post :)
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 8:38 AM
To: 'WISPA General List'
Subject: RE: [WISPA] LMR600, LMR900, Heliax
You can buy them at Tessco, I'm pretty su
reason JohnnyO decided to take on this mule
headed post :)
JohnnyO
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Ralph
Sent: Saturday, March 17, 2007 8:38 AM
To: 'WISPA General List'
Subject: RE: [WISPA] LMR600, LMR900, Heliax
You can buy them
Thanks for the reminder. As with most of life, there is no one right
answer.
On towers over 100' or so, radios at the top and pay the climbers as needed.
For shorter towers, which server smaller area anyway, I am looking at
higher power, more sensitive radios at the bottom to offset the cable
You can buy them at Tessco, I'm pretty sure. Stick with Heliax (r) type
cables (hard line) for those distances, and use 1 5/8 minimum. The loss is
amazing at anything above 450 MHz. Look at any cell tower and you will see
what you need to use, then count on twice the loss if you use 2.4 or many
I'm sure you've already checked all the numbers, but even with LMR900 at
5.8ghz there can be a great deal of loss:
LMR-600 going 100ft at 5.8ghz = 8db of loss
LMR-900 going 100ft at 5.8ghz = 6db of loss
We have switched some of our backhaul links to this same setup (radio
inside, LMR-400 cable
Yep, that is where I want head. Where do you get your cables?
Mario Pommier wrote:
Smart move!!!
When at all possible, we do that: active elements inside, inactive
antenna outside.
Design your grounding properly (NOT A MINOR ACHIEVEMENT!!!) and
you're set: EVERYTHING goes to 1 common groun
Smart move!!!
When at all possible, we do that: active elements inside, inactive
antenna outside.
Design your grounding properly (NOT A MINOR ACHIEVEMENT!!!) and
you're set: EVERYTHING goes to 1 common ground, coax lightning kits
(outdoors) and in line lightning arrestors (indoors) go to di
Scott Reed wrote:
Who supplies pre-terminated (N connectors) cables in the 70 to 150'
range using LMR 600, LMR900 and/or Heliax? Looking to move radios to
the bottom of towers.
You can buy them preterminated from electro-comm.com
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