At 06:43 PM 11/21/2008, JOHN MACKEY wrote:
Yes,,, but,,, RF (analog) guys tend to be quicker to understand networking
(digital) issues and certainly take less for granted.
---I've always maintained that RF is as much as art form as it is
science. You either have a feel for it or you don't.
Ken
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ
[EMAIL PROTECTED] wrote:
At 04:13 PM 11/21/08, you wrote:
I know this subject has been kicked around in the past but I need a
Thanks Mike.
Am I correct in that you are describing the hardware at the
connection of the coax harness to
These are not 90 watts TX out. They top out at about 50 watts.
You can run an out board amp, but that is not advised as it is another part
to break and their reliability is sometimes suspect.
If you are connecting a 3rd party controller like a Linkcom, Scom or such to
it, there are sometimes
The Yaesu may have problem. It should be -119dbm or about .3 to .25 uv with
a service monitor if tuned and working correctly.
Those repeaters were never well known for good front ends.
I would have your coax sweep with a Anritsu Site Master or some kind of coax
testing device (not just a watt
Seal the connector with a layer of the 3m rubber tape and then the 3m type
88 tape. Extend beyond the connectors about 2 inches and before you put the
type 88 tape on use the warmth of your hands and pressure to mold the
rubber tape down on the connectors and coax for a final seal.
Scotchkote is
On Sat, 22 Nov 2008, n9lv wrote:
The tried at 110' was not enough signal, -80 dbm was best, at 120' we
hit -72 dbm so that is where it had to go. What I am looking for is
possibly a filter that will solve the problem and allow them both to
survive on the same tower.
We've had a number of
When you check the terminal connections, be sure to back off the outer nut
before verifying a good torque on the nut that tightens onto the aluminum
element, then replace the outer nut and tighten it onto the terminal lug. A
stainless steel toothed lockwasher should be under each nut. I recently
On Fri, 21 Nov 2008, kf0m wrote:
I have a friend who had a similar problem trying to get enough signal
from the main site to his house. The Internet company guy was ready
to say it just couldn't be done for his location and distance. He
asked the guy to come back the next day for one more
I am wanting to install a cheep, very cheep phone service VoIP at the
repeater site using the second IP I have available to me. I would like to
have a service that uses an ATA that can be configured to work with the
service I end up going with. I have herd that the Magic Jack will not work
since
Mike,
I was doing some research for another project and came across this:
http://www.asterisk.org
It's a PBX style piece of software. You will need to do MUCH more research to
figure it out. I ran across it while looking at software that runs on a Linksys
Network Storage Link (slug). It's
John,
I have a total of six MTR2000 repeaters in service, in both Amateur and
commercial applications, with two more to be added in a few months. I have
learned what options are necessary or desirable, and which can be deleted to
save money. In order to provide you with a ballpark figure, and
I suggest a Linksys PAP2-NA (an unlocked ethernet-based ATA)
I personally use vitelity.net for my business's voip service. I tested
Teliax with good results also. If all you need is termination (outgoing
calls) you're only billed per minute (and it's not like the average
autopatch is THAT
Eric,
Your questions are answered below.
1. What transmit frequency (within 1 MHz) will the repeater use?
Answer: The repeater TX frequency is 448.375 MHz. RX is down 5 MHz.
2. Do you want a 40 watt or 100 watt transmitter?
Answer: I'd like to have 90 watts out but it doesn't have to come
At 11/22/2008 07:54, you wrote:
Brands to stay away from
Hamtronics
Maggorie (sp)
Spectrum. IMO the worst by far.
Bob NO6B
John,
I certainly can't dispute the fact that an MTR2000 repeater is far more
expensive than a TKR-850 repeater, nor can I dispute the fact that a BMW is
far more expensive than a Yugo. The MTR2000 is a high-tier, heavy-duty,
very reliable unit that can operate continuously. The TKR-850 is a
Motorola GR1225 Desktop UHF 444-475 40 watt repeater. Like brand new,
extremely low hours. Built in late 1999, factory duplexer, narrow
band/Expand capable, DPL or PL, CW ID . Photos on request. Located
in Los Angeles County, can program/tune duplexer. Ready to go to work!
Any feelings on the ACS/MCS/Kendecom dynasty? I'm trying to decide
whether or not to spruce up the club's old repeater as a spare or look
for something different for a spare. I've never had to deal with their
RF units before... Only the Mark IV controller, which I was not real
pleased
Makes a nice wheel chocke for a B-17
No really
Anything that is not a commercially made repeater made by one of the main
stream makers...
Motorola
GE/MaCom
Midland
Icom
Kenwood
Tait
Vertex
Maybe EFJ (don't care for them too much).
Should be stayed away from. A prime example is the
I've got an old Mark IV on a fairly active site running with a CAT-1000
controller and it's been flawless. Audio is great and it's just generally
been well behaved.
I also have another Mark IV running with the original on-board controller.
This is our spare and despite suffering a lightning
After reading the replys, get the Motorola, either new or used.
There is an old saying the public safety radio world
No one ever got fired for buying Motorola
Paul,ZW
On Fri, Nov 21, 2008 at 12:36 PM, John Transue [EMAIL PROTECTED] wrote:
To help me determine whether the Motorola
Hi, i am in need of a repeater hangtime circuit, iv reviewed the one
on repeater builder website, but was wondering if there is one that
someone has made with a 555 timer IC?
Thanks,
jeff-kg6uyz
Can anyone tell me if there are ANY fixes for co-channel interference?
What is the use of a PL tone if it isn't able to block out the co-
channel users? Is it because the co-channel user is transmitting with
more power and is able to break the PL tone? What are the expectations
of a PL tone?
I have an SCR-1000 that was being used as a local repeater and then
was replaced. I am looking for information on the control circuits,
how to program the IDer, a service and or users manual and any other
info I can find. The unit is VHF (not sure if that matters).
There have been a number of
From my limited experience I'd have to suggest you give a serious look at
the Maggiore Hi-Pro.
As non-commercial units go, those are pretty good. Don't hold a candle to
Motorola and cost a little more new than a used Motorola repeater but you
also don't need the Motorola software, cables, etc to
How are you going to put a duplex channel in the DTRs' ie. make the DTR rx on
channel 1 and tx on channel 12 with just a PTT, for the portables in use on
the farm?
Hello to all and thanks for reading.
I am looking to buy your unwanted Hamtronics R302 receiver for a 2
meter ham application. Would prefer a working radio, but will consider
all, as long as it hasn't been fried by lightning. Please state price
and condition in first email.
Thanks, Howard
Mathew,
Don't give up, look for another site if possible for the machine, if the
interference issues can't be resolved..Would hate to see this happen. Hope all
is well otherwise.
Dan N9WNH
--- On Thu, 11/20/08, n9lv [EMAIL PROTECTED] wrote:
From: n9lv [EMAIL PROTECTED]
Subject:
I am new to the sinclair line of duplexers. I have a set of used vhf
duplexers setup in the high vhf range. current freqs are 165.2375 and
165.1375. Has anyone had luck changing the coax harness to the longer
36cm and getting the duplexers to tune down to the two meter band?
Thanks
-Jason
Jim,
But it will work on the Motorola DTR (digital) FHSS handheld?
I am worry about the FHSS.
Thanks
- Original Message -
From: Jim Brown
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, November 18, 2008 1:19 AM
Subject: Re: [Repeater-Builder] GM-300 Repeater (was
At 11/22/2008 18:12, you wrote:
Any feelings on the ACS/MCS/Kendecom dynasty?
Oops, forgot Kendecom. 2nd worst. The RXs are OK provided you bypass the
defective squelch circuit add a Micor squelch. Still, there are problems
with either IF filter leakage or IF amp overload, resulting in
John,
I would have to agree with James here on this topic. A MTR2000 is
pretty spendy for most clubs.
For my money a MSF5000 is very hard to beat and I have found the
software to be a little more flexible for having the programming
options that work well for amateur radio use.
I would recommend
At 11/21/2008 20:03, you wrote:
I am new to the sinclair line of duplexers. I have a set of used vhf
duplexers setup in the high vhf range. current freqs are 165.2375 and
165.1375. Has anyone had luck changing the coax harness to the longer
36cm and getting the duplexers to tune down to the two
At 03:22 PM 11/22/08, you wrote:
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Hey Everyone, I know there is a mix of Hams and commercial guys here
so I want to ask all of you about SWR meters.
I am a beginning ham and would like to build some VHF and UHF
antennas. I am also on a budget. (Isn't everyone these days) I need a
decent SWR meter for VHF and UHF use. I don't
I have one of those critters also, but no book. Spectrum wants a small
fortune for it. As for the ID unit, it is a burned chip that is not really
available. I would suggest an after market one.
That is what I know so far...
73
Mike - N7ZEF
- Original Message -
From: Keith Foor
Albert,
I've had friends joke about MFJ standing for mighty fine junk, but I have
nothing but good things to say about my MFJ 259 antenna analyzer.
If you're building antennas, the MFJ 259 (HF/VHF) or 269 (HF/VHF/UHF) are
really handy. If you're trying to find the resonant frequency or set up
These repeaters got a bad reputation in part because of hams who tuned them be
peaking rather than using the procedure in the manual. The PA was fairly
efficient, but not unconditionally stable, and could produce spurs if not
properly tuned.
One other issue was the combination of Spectrum
Morning crew,
Been looking for a duplexer that will do the 0.600 split for a mobile repeater.
Space is a big consideration for this project. If anyone has any suggestions
please email me and let me know.
Thanks
Peter Summerhawk
How about the 15KHz coming down the audio lines?
ACC also had a situation where they took a 15KHz clock pulse train
from the microprocessor circuitry, amplified it with an LM386 audio amp,
rectified it, filtered it, and used it as the raw negative voltage supply into
the negative voltage
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