Currently just upgraded my home built GMRS Maxtrac repeater to a new 6.5db Gain
Tran-Max antenna. Says SWR should be 1.5 - 1 or less and I have a reading of
2.5 - 1. I'm using LMR 400 ultra low loss cable at 40 ft putting in 40 watts of
power. The antenna is mounted on 40 ft tower old 3 legged s
Im looking for radios motorolla vhf gm 300 and maxtrac 300 used radios thank
you william saiz..
To: Repeater-Builder@yahoogroups.com
From: ka3...@att.net
Date: Thu, 21 May 2009 22:07:22 -0500
Subject: Re: [Repeater-Builder] OT - Tower Photographs needed
If you don't get any other o
If you are trying to do a paging system on the repeater then no you
can not do this, if you plan on using a method that encrypts the
message.
I would sugesst that many radios now come with the ability to CTCSS
tone page, and use this method. Only radios on and set to that page
code you pick will a
I can't say for certain, but have you checked the antenna prior to
putting it on the tower?
I have a high gain antenna ion a twoer, need to get the heliax
connected to it, but i tested in on a post before I put it on the
twoer
Also, LMR400 is not recommended for full duplex use. that type of
c
The two nearest NOAA weather transmitters to here
are 50 miles away, in adjacent counties. The NOAA
site shows coverage to about half of our county to be,
"0dBuV to 18dBuV: picking up a signal is possible but unreliable"
A NOAA antenna at about 45 feet and a Radio Shack
receiver allows us to auto
Has anyone used one of these 5600 Series repeaters for amateur service and
interfaced it to a external controller. We use the Arcom RC-210 controllers.
It looks all do-able but thought if anyone had, there is no sense in
re-inventing the wheel.
Anyone know of a source of both the radio and cont
There is no legal difference between using CTCSS tone paging vs audible
tone paging. Both are the same thing. I have a pager on my repeater. It
alerts me to site conditions that require attention (alarms), and is
used by others if they are trying to get hold of me and I'm not
monitoring at the
I would like to thank everyone for their input, suggestions, comments, etc. I
know that some people may still post on this and that is fine with me, but I
consider this now a done deal.
I would also like to pass along this link that was sent to me. I just
downloaded it and will be looking at
Got a VHF repeater in my area. In the last several weeks it has started making
a noise like that of a steam whistle. It doesn't do it all the time. It seems
random. I have not been able to make any connections yet with regular
occurances. It doesn't do it until someone talks through the repeater
Could be someone playing "games" with the users.
Chuck
WB2EDV
- Original Message -
From: "NORM KNAPP"
To:
Sent: Sunday, May 24, 2009 5:12 PM
Subject: [Repeater-Builder] Strang new noise in repeater
> Got a VHF repeater in my area. In the last several weeks it has started
> making a
No, I don't think it is malicious or deliberate. It is almost as if the
repeater is getting into itself. It is not a ham repeater, it is a local
Sheriffs dept.
- Original Message -
From: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Sent: Sun May 24 16:03:48 20
A few years back the exact same thing was happening here on a VHF simplex
Sheriff system. Solution? Take the toy train whistle away from the deputy.
I'm not kidding.
Chuck
WB2EDV
- Original Message -
From: "NORM KNAPP"
To:
Sent: Sunday, May 24, 2009 5:24 PM
Subject: Re: [Repeater-Bu
Norman, we had a similar situation many years ago with a Ham repeater that
would
lock up with a distant repeater using the reverse pair frequencies ! It was
a sound like
a hollow tunnel howling and growling.happened during periods of
inversion.
John VE3AMZ
- Original Message -
F
Thanks!
It doesn't sound that much like a toy. I have heard it several times. The
radios have a asci type identifier at the end of their tranmissions. No
identifiers after the whistle sound.
- Original Message -
From: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Now that is more likely. They have a really weird splinter frequency and a DPL
code. That is still very possible. There has been a good bit of ducting lately.
Thanks, I will start listening to the repeater input.
- Original Message -
From: Repeater-Builder@yahoogroups.com
To: Repeater-B
You could do a frequency search and see if you could find a user on the
reverse pair. However, I've never heard it sound like a steam whistle - the
description of howling in a tunnel (or drain pipe) is what I've heard when
reverse pair repeaters lock up. And they can stay locked up until one ti
Well. The tunnel thing is a better desciption. There is kind of a heterodyning
effect to the sound. Like a drain pipe hollow sound. Good desciption.
- Original Message -
From: Repeater-Builder@yahoogroups.com
To: Repeater-Builder@yahoogroups.com
Sent: Sun May 24 16:39:07 2009
Subject: R
Is paging legal?. A careful reading of Part 97 [sections 97.3(a)(10), 97.1 1
1 (b)(2), 97.305(c), and 97.307(f)
(5)] makes it clear that digital paging is allowed for VHF and UHF
operations. One-way transmissions are
made every day by amateurs to establish communications with other amateurs,
even
On May 22, 2009, at 6:08 AM, Chuck Kelsey wrote:
> Nate -
>
> Were these dual-dipole arrays - a total of 4 elements? Or were they
> two
> elements - one mounted over the top of the other?
>
> Chuck
> WB2EDV
2-elements only, vertically mounted one above the other.
http://www.sinclairtechnolog
On May 22, 2009, at 2:31 PM, Mike Morris WA6ILQ wrote:
> Does anyone have a suggestion for such a product ?
I have two of the small "wall wort" Battery Tender Jr.'s from these
guys, and use them for tons of stuff... the RV battery in the family
shared "pop-up" trailer, the battery in the fa
Does this repeater have a digital audio delay in it? It could be
getting into ITSELF...
Output to input PIM or other sources like that with a digital audio
delay, will sound like that... a hollow "echo" chamber, often with any
tones or low level noises really amplified... like stage PA syst
> >A Home Brew 224 MHz Repeater Project.
> >Let's talk about the coax connector being an RCA jack on the
> >exciter PC Board. Why bother with a box chassis mount connector
> >added to the path
> n...@... wrote:
> Why? To maintain proper shielding.
No, to eliminate the extra loss of two addit
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