On Nov 23, 2007, at 3:55 PM, Derek wrote:
I've used the DB-408 antenna and am happy with it's performance, but
am
wondering about significant difference in using a DB-420 for future
repeaters. Also considering the RFS 1151 (Tessco # 435830) fiberglass
antenna. It is tuned for 440-450
On Nov 23, 2007, at 12:04 PM, Jim Brown wrote:
We have a wireless ISP at this site, and the ISP
provider decided to take away the public IP address
and assign us a private IP address, which no one can
reach from the internet. We can do everything we need
to do on the internet, but packets
Hello
I would loke to know what type of radio this is and how do I program
this unit. Thanks
Roger KG6TZT
I am looking for a schematic for a Motorola HLN 3948 repeater
controller. This is a small controller that can be placed between to
radios in order to make a repeater.
Eric.
Sounds like a Spectra model number. You'd need the
Spectra RSS, a RIB, and associated cables. The A9
tells me it has an A9 control head and is trunk-mount,
high-power.
There should also be an ID number that's 12 characters
long; this will let you find a lot more info.
Bob M.
==
---
Eric,
The HLN3948 is the basic repeater controller that is in the HLN R*I*C*K
(Repeater Communications Interface Kit), which is used to connect two GM300
mobile radios and create a GR300 Repeater. Other radios can be used with
the appropriate cables and changes in jumpers and I/O functions.
Tony, et al
I read through many of the comments everyone has posted, all equally
reasonable, and justifiable. I would like to comment on this.
Back in 2004, June QST or somewhere around that time, a Correspondence article
was published by the ARRL entitled Use what we have. To this day, I
Thanks!
'JK
--- In Repeater-Builder@yahoogroups.com,
Repeater-Builder@yahoogroups.com wrote:
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the Repeater-Builder
group.
File: /Combiner.jpg
Uploaded by :
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the Repeater-Builder
group.
File: /2 RX selector schematic.png
Uploaded by : no6b [EMAIL PROTECTED]
Description : 2 RX combiner with controllable priority/disable
As has been pointed out by a couple of folks now,
change the part number for the IC from CA4011 to
CD4011. It is a CMOS quad two input NAND gate. Also
I have uploaded a much more readable version of the
schematic along with the free download site of the
viewer for the schematic.
73 - Jim W5ZIT
I have been told that if there are cooling fans on both sides of the
repeaters heat sinks it's the 25-100 unit(uhf). Is this correct. No
cooling fans would indicate 40 watt units or just remote receivers.
That is partly correct. The presence of fans does indicate that the station
is in the 75-100 watt class, but it tells you nothing about the frequency of
operation. Here is a list of fan-equipped MTR2000 power amplifiers:
CLN1224/TTD1791 132-154 MHz
CLN1225/TTD1792 150-174 MHz
CLN1228/TTX1010
Hi Bob,
Thanks for the information this will help a great deal. I have the rss and
I'm getting the rib box I just have to find a diagram for the cable then I'm
set
Thanks again
Roger KG6TZT
Bob M. [EMAIL PROTECTED] wrote: Sounds like a
Spectra
Roger, You can find the diagram of the cables here
http://www.batlabs.com/speccbl.html And probably on this Group , I was not
brave enough to try and make one and smoke My radio So I Bought one on
E-Bay .
Good Luck
Don KA9QJG
Well, since you obviously know about the
repeater-builder Yahoo Group, have you ever visited
the www.repeater-builder.com web site? I bet if you
looked in the Motorola section - the company that
makes the radios, you'd find some info on Spectras,
and, wonder of wonders, maybe even an itsy-bitsy,
The MTR2000 contains a very capable controller which includes the
power-reduction feature when on battery backup, along with an optional alarm
tone to advise users of the condition. The programming software package
contains a fairly good tutorial about how to program the station. I will
gladly
Here in Florida near a beach we have found exposed dipoles like the DB224 are
destroyed by the salt air. They last 6-10 years. This is most often withing a
couple miles of a beach although I've seen a number die when mounted at longer
distances.
I prefer the fiberglass larger ones like the
Hi Eric,
I make no secret of my disdain for bells and whistles like clever courtesy
tones, autopatch, and voice announcements. I work primarily in commercial
and public-safety radio systems where such features have no place.
That's certainly an understandable take, but keep in mind
Although many logic, including NAND gates, operate in linear mode, but not for
audio. They simply switch from/to logic 0 or 1.
The 4066 is an analog switch and works very well. One must bias its inputs
somewhere in the middle of the power supply voltage so any audio signal will
not work
400 AA and 100 AAA batteries for $56.99!
http://www.batteries.com/productprofile.asp?appid=407612
--- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote:
I don't think the comments about where you want to put your signal
apply as much as some folks would have you believe. Even though the
408 pushes more gain to the horizon, it still is rated for something
like
The Linker IIa is a 2 port controller with a seperate control receiver
input.
The control receiver input has priority over RX1 and RX2, RX1 has
priority over
RX2.
The COS inputs can be programmed for + or - polarity as well as trigger
levels.
I am not sure if this is exactly what you are
Gee Jim, I don't think that I have ever seen an ISP providing a
private IP address to a drop. Are you sure that some one local
hasn't added a router to your set up? try opening a web page and
type in the first three octets of your IP address that you have and
for the last Octet use .01 if you
Not so Ron. Give it a try - you might be surprised.
I have been using the 4011 CMOS logic in audio
circuits for 30 years and have not been disapointed in
the audio quality in any of the circuits I have used
them in. That feedback resistor from the output to
one of the inputs converts it to a
Actually it must be pretty common on the wireless
distribution ISP systems. I know of one in San
Antonio that was set up that way, and one in New
Mexico that had a public IP address for customers till
they lost a port and it went to private. The one here
gave us a public IP address for a couple
On Nov 25, 2007, at 8:19 PM, Laryn Lohman wrote:
Hi Larry, yeah... reading back through it I transposed 408 and 420.
Nate, perhaps you could clarify that paragraph...
Anyway, I was just comparing published vertical beamwidth numbers for
various bands/manufacturers/gains. Within a degree or
At 11/25/2007 18:51, you wrote:
The 4066 is an analog switch and works very well. One must bias its inputs
somewhere in the middle of the power supply voltage so any audio signal
will not work outside its rails.
Very true; I know some who swore off the 4066 as unreliable poorly
performing
At 11/25/2007 19:50, you wrote:
The Linker IIa is a 2 port controller with a seperate control receiver input.
The control receiver input has priority over RX1 and RX2, RX1 has priority
over
RX2.Â
Can it mix RX audio from ports 1 2?
Bob NO6B
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