Has anyone setup a wireless internet community where a group of users
can use uhf radios and/or repeaters to communicate with a base station
to access the internet instead of phone lines
http://groups.yahoo.com/group/Wireless-Internet/
and what types of speeds can you expect?.
I have a
Thanks kevin
Thank You,
Ian Wells,
Kerinvale Comaudio,
www.kerinvalecomaudio.com.au
---Original Message---
From: Kevin Custer
Date: 03/12/06 22:50:44
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] internet via uhf commercial radio
Has anyone setup a
Well Mike depends on which one you want ..
Motorola
EF Johnson
General Electric
Midland
Mac Guires ( did I spell this wrong ? )
Kenwood
Icom
Moto also has some GR8 courses on training on their recent goodies such
as the Smart Zone tm , Convetional Digital repeaters some
A post from my echolink group
snip
From: Bob [EMAIL PROTECTED]
Date: Sat Mar 11, 2006 9:57 am
Subject: Vertex VXR-7000 Repeater Question brradioman
I have a Vertex VXR-7000 UHF Repeater,My Question is When my repeater
times out it does not reset untill i reset it manual.I know its got
Hi
Iam in the UK and Iam looking for a Motorola P200
on 50Mhz
Reason is Iam building a 6mtr amateur rptr using 2
Ge Rangrs
and NHRC controller. It is on test at present and
seems to work well. I need a handheld to do some tests, so if any one has one
for sale, pls email me direct.
73
John [EMAIL PROTECTED] wrote:
Hi,
I have just had a TKR-820 donated to our group. It came
with a set of Sinclair cavities.
You folks did real well. You didn't say the location, but
we/I will assume the cavities are external to the repeater
cabinet.
But there is no operational manual.
We I had set up 2 antenna with horizontal seperation of 100ft apart however without any band pass filter even 5 watts TX power will not do. We are planning to have 147.825 RX and offset -0.6mhz TX at 147.225mhz, would you highly advise to use a duplexer.Another thing is that the
Mike,
Assuming 5 watts of TX power and an RX sensitivity of 0.3
uV, at your specified frequencies,a horizontal separation of 100 feet
provides about 1.2 dB of isolation. Even at the low power of 5 watts, you
need about 79 dB of isolation, according to my CommShop program's
calculation.
we have a 900 duplexer available
for them what wants a classy commercial type
system rather than an amateur system. nothing
like doing it right the first time 708-681-0300
mon-fri
mdm
--- Bob M. [EMAIL PROTECTED] wrote:
I think the best answer is:
it depends.
They tend to serve different
It takes a lot of horizontal separation to achieve the
90 or so dB of isolation you need for a repeater.
Hundreds of feet. Vertical separation gives you a lot
more isolation for a lot less distance; 50 feet might
be plenty.
But with only one antenna, you'll need a good 4 or 6
section duplexer.
I have a 4 bay vhf antenna, with each antenna straight and not
folded. The harness is old and cracked. Some one has used
electrical tape on some of the harness. There is no label or
markings anyplace to know what brand it might be. If I made a new
harness, can I use T connectors? Each antenna
Sounds like an old Cushcraft AFM-4DA array. Bad news.
--- Jeff
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Sunday, March 12, 2006 3:10 PM
To: [EMAIL PROTECTED];
You have a Cushcraft 4-pole. This is not a particularly good antenna.
Yes you can use Tee connectors. Don't place this antenna in service on
anything that is critical, would be my suggestion.
Chuck
WB2EDV
[EMAIL PROTECTED] wrote:
I have a 4 bay vhf antenna, with each antenna straight and
Does anybody have the formula for the harness on a Decibel DB-4060-WOC-C?
Its a 4 can VHF duplxer. It used to be up around 155Mhz and I need to
get it down to 145.23/144.63
It will tune the 145.23 but 144.630 just won't notch right. I suspect
the inter-cavity harness.
Any help would be
When bringing commercial duplexers down try a trick that I use. Temporarily
lengthen the cables by inserting 'right angle' adapters in each line. Not exact
but does lengthen each cable by a half inch or so. Good test to see if longer
cables are going to help.
W8AK
I agree- i've successfully used connectors many times to see if I'm going in
the right direction !!
Jerry VE3 EXT
Yahoo! Groups Links
* To visit your group on the web, go to:
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* To unsubscribe from this group, send an email to:
Hello,
I have the same antenna, however the main elements is only about 8, I
think this is UHF???
Does anyone know the band limits of this antenna, is it any good for
low power repeater?
-Thanks, Rob
Yahoo! Groups Links
* To visit your group on the web, go to:
Dear Eric,Thank you for you advise and really appreciate that...73 v8mqmEric Lemmon [EMAIL PROTECTED] wrote: Mike,Assuming 5 watts of TX power and an RX sensitivity of 0.3 uV, at your specified frequencies,a horizontal separation of 100 feet provides about 1.2 dB of isolation.
take a wander over to Cushcraft to see if the manual can be downloaded.
m
[EMAIL PROTECTED] wrote:
I have a 4 bay vhf antenna, with each antenna straight and not
folded. The harness is old and cracked. Some one has used
electrical tape on some of the harness. There is no label or
markings
Hi Rod,
Might be the Cushcraft antenna or one by a number of
other people/companies selling that design (Hustler
for another) some years back. The part number for the
commercial four pole masts antenna is PF-156DA for
the 150 MHz version and PF-457DA for the UHF version.
The amateur
Skipp,
Thanks for the response. I'd like to pick your brain on this. I havejust
finished a GE MastrII Exec VHF conversion and I've been in the comm
field for 30 years so I have some experience (just to let you know I'm
not a novice)
Yes, the cavities are external, they are a 4 can Sinclair
I
John [EMAIL PROTECTED] wrote:
Thanks for the response. I'd like to pick your brain
on this.
Not too much... don't have many cells left after disco
and some 1970's through the early 1980's bad habits.
But just to get me going I'd like to ask you the following
I turned the unit on and get
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