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Re: GE Ranger for 6 meters?

Chuck Wood
 

THE RANGER WONT MAKE A RPT UNLESS YOU USE TWO OF THEM. HOWEVER THEY ARE ONE
OF THE BEST SIX METER RADIOS GOING. IF YOU HAVE A CHANCE TO GET THEM DO.
ALSO ARE THEY AVAILABLE TO OTHER PEOPLE OR WHAT?

AGAIN DONT LET THEM SLIP BY THEY ARE AN EXTREMELY GOOD RADIO.


73S CHUCK WD6APP

-----Original Message-----
From: Tedd Doda <lazer@...>
To: Repeater list <repeater-builder@...>
Date: Sunday, February 28, 1999 1:31 PM
Subject: [repeater-builder] GE Ranger for 6 meters?


From: "Tedd Doda" <lazer@...>

Hi people:

Thanks for all the replies about the Mitreks and Master II's.

While at the Hamilton, Ontario fleamarket, a friend found
some GE Rangers on 6 meters. They come with the 990 control
head, and all 64 memories programmed. We can get them for
$150 CDN ($100 USD).

Has anyone tried these for repeater use? I would be worried
about the PLL noise, but don't know if it would be a concern.

Would it be possible to use the internal CTCSS (PL) encode
AND decode at the same time (again, for repeater use).

Thanks for any input.


Tedd Doda CET

packet va3sed@va3sed
e-mail lazer@...



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Re: Member Update

 

On Mon, 01 Mar 1999 18:35:57 -0800, Cristobal Inos wrote:

I am glad I found and joined this list...I am equally happy to know that
membership has grown in such a short time. I just would like to know how
far (geographically) membership extends. I am located at 15 mira
14-08-28W 145-11-12E
Located about 60 miles south-west of Toronto, Ontario (EN93).
Our club, The Kitchener-Waterloo ARC ()
maintains a number of repeaters including 2m, 220, 440, and
the soon to be released 6 meter.


Tedd Doda CET

packet va3sed@va3sed
e-mail lazer@...


Re: List of subscribers

JoeD
 

Oops, sorry, I posted to the wrong list!!

Sorry guys.

Joe (wa4nwo)


List of subscribers

 

To answer Bob's question about getting a list of all the subscribers: YES!

On your member center page ( go to < and login, then click the "Member center" button) click on the USS_Chicago link under "List Center" then select "Member Profiles". Finally, run outside and rotate the tires on your car.... No wait, skip that last step...

This should give you a list of all the users on the list (24 at last count)

Joe


Re: Member Update

Kevin Mitchell <[email protected]
 

Hi Chris, and the Group,

I am getting this group from down here in New Zealand, and if this group is anything to go by, it should be going into every country, thanks to Kevin
for adding it to the newsgroups.

On the subject, Kevin mentions that this server will accept attachments, so hopefully we might see some circuits being posted.

Hope to catch, or hear from everyone as the group grows more and more.


Regards

Kevin, ZL1UDD.
Owner, Operator South Auckland Repeater Group.
29.64, 145.775, 147.325, 438.250, 428.575, 1291.100.
Using Link-Comm RLC-2a and RLC-3 controllers with DVR and Remote Auto-Patch.

PS. I am looking for equipment to run on 1296MHz as a repeater, I understand there is a mod to convert 430MHz equipment up to this freq.
Come to mention it, I am always on the look out for reasonable priced equipment to use as portable repeaters and full duplex links.


Cristobal Inos wrote:

From: Cristobal Inos <soni@...>

Kevin K. Custer W3KKC wrote:

From: "Kevin K. Custer W3KKC" <kuggie@...>

The Repeater-Builder List now has 211 members.
This all has happened in just 14 days!

Carry on........

Kevin Custer
List Owner

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I am glad I found and joined this list...I am equally happy to know that
membership has grown in such a short time. I just would like to know how
far (geographically) membership extends. I am located at 15 mira
14-08-28W 145-11-12E

thank you

chris inos
wh6um

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GE Custom MVP Rptr Mods

Randy Nelson
 

I understand this model converts very easily to a repeater.
Has someone published modifications for use as a repeater?
Nothing fancy, just a simple COR would do.

73's, Randy, WB0VHB


Member Update

Kevin K. Custer W3KKC
 

The Repeater-Builder List now has 211 members.
This all has happened in just 14 days!

Carry on........


Kevin Custer
List Owner


Re: Member Update

 

I'm in Spanaway , WA... 470222N x 1222250W, Grid CN87TA.

73, Gary, W7NTF


Model

Chuck k
 

Hello to all

Can some one tell me what a motorola C74gsb-610_ _at
That is the # that i can read

Thanks
chuckk


Model

Chuck k
 

Hello to all

Can some one tell me what a motorola C74gsb-610_ _at
That is the # that i can read

Thanks
chuckk


Re: service monitors

Kevin K. Custer W3KKC
 

Dean wrote:

From: Dean <deant@...>

Has anyone had any experience with the ramsey or the build your own
spectrum analyzers kit's ? there really cheap? but will it work?


Go here for a really neat analyzer that won't bust your budget.
I have built two of them and they work ok.

Kevin


Re: service monitors

Kevin K. Custer W3KKC
 

Dean wrote:

From: Dean <deant@...>

Has anyone had any experience with the ramsey or the build your own
spectrum analyzers kit's ? there really cheap? but will it work?
Their stuff is usually not worth a damn.

IMHO of course.

Kevin


service monitors

Dean
 

Has anyone had any experience with the ramsey or the build your own
spectrum analyzers kit's ? there really cheap? but will it work?


GE Ranger for 6 meters?

Tedd Doda
 

Hi people:

Thanks for all the replies about the Mitreks and Master II's.

While at the Hamilton, Ontario fleamarket, a friend found
some GE Rangers on 6 meters. They come with the 990 control
head, and all 64 memories programmed. We can get them for
$150 CDN ($100 USD).

Has anyone tried these for repeater use? I would be worried
about the PLL noise, but don't know if it would be a concern.

Would it be possible to use the internal CTCSS (PL) encode
AND decode at the same time (again, for repeater use).

Thanks for any input.


Tedd Doda CET

packet va3sed@va3sed
e-mail lazer@...


Re: Moto R2009 service monitor

Mark Sihlanick
 

thats for the tip. I emailed amtronix but they indicate they have too much
of a back log and referred me to Communications Signaling.

Mark

At 07:02 AM 99/02/26 -0500, you wrote:
From: DPW <dpw@...>

Mark,

Since you are in 2 land, I would try Amtronix. Rick Bowman has always
been fair and honest with me. Find them at:


Thanks,
David Waters, AC4JF


Mark Sihlanick wrote:

From: Mark Sihlanick <n2qt@...>

I've got a Motorola R2009 service monito that's now got display problems.
Is there a better choice for repair than direct with Motorola?? (or are
there some quick checks that I should do first?)

Mark
n2qt

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Re: used service monitors

Kevin K. Custer W3KKC
 

Can anyone tell me where I could find LOW priced used service monitors,
maybe something simple like signal gen and audio scope?
IFR or wavetek ? any idea's ?
I would go to the local Two Way shop. Many times they have one ready to sell
for a good price because of a recent upgrade. I have gotten several this way.

Also try this place


Kevin


Re: used service monitors

Tedd Doda
 

Hi Dean:

On Sat, 27 Feb 1999 20:11:21 -1000, Dean wrote:

Can anyone tell me where I could find LOW priced used service monitors,
maybe something simple like signal gen and audio scope? IFR or wavetek ?
any idea's ?
When I was in the market for one, I contacted the areas cellular
provider. I picked up an IFR 1500 that was about 7 years old
for less than $2500 (Canadian...about $1700 USD). The unit
was maintained yearly and is still in operation.

currently using cushman CE-5
getting kinda flukieeeee.....
Your Cushman is turning into a Fluke (hi hi). Wish one
of my IFRs would turn into a Motorola........


Tedd Doda CET

packet va3sed@va3sed
e-mail lazer@...


used service monitors

Dean
 

Can anyone tell me where I could find LOW priced used service monitors,
maybe something simple like signal gen and audio scope? IFR or wavetek ?
any idea's ?
AH6IF Dean
currently using cushman CE-5
getting kinda flukieeeee.....


Re: VHF Antenna Design

John Hackman
 

Oh, what a wonderful place to put a repeater! What's the frequency going to
be? I'll look for it the next time I head down that way.

IMHO, you do NOT want to use a gain antenna! Gain antennas get their gain by
flattening the radiation pattern; the effect of using a high gain antenna at
that site will be to put 95% of the radiation over the heads of the users. I
would suggest a DB Products 4-element antenna mounted as far off the tower
as you can get with the factory standoffs; second choice would be a Celwave
Stationmaster [fiberglass - more prone to static discharge and wind noise]
with same mounting.

Regards,

.....John WB4VVA

-----Original Message-----
From: Terry Bartholomew NQ4Y <terry@...>
To: repeater-builder@... <repeater-builder@...>
Date: Saturday, February 27, 1999 5:03 AM
Subject: [repeater-builder] VHF Antenna Design


From: "Terry Bartholomew NQ4Y" <terry@...>

I am on a fact finding mission, gathering information about
the pros and cons of a particular antenna design/configuration.
This antenna will be used on a VHF repeater (Monteagle, TN.)
We need near 360 degree coverage. The repeater is at 2300
feet HAMSL if downtilt should be a consideration.
I have narrowed the choices down to either an 8 or a 16 element
dipole array.

1) Would a folded dipole have more gain than a "gamma matched"
dipole? I was told that a folded dipole has 1.5dB more
gain than a standard dipole.

2) What is the best way to orient the antennas on the tower
(Rhon 25G?)
a) put them all on the same side of the tower and point
them toward the tower...
b) put them in two groups of 8, back to back...
c) start at the top and mount them down the tower, turning
each 90 degrees from the previous...
d) put them in two groups of 8, first group of 8 over the
second group of 8, point the lower group of 8 180 degrees
of the first 8?

3) Has anyone had any experience with the Maxrad 4 element dipole
array? Or would it perform like the old cushcraft 4 element
dipole?


All comments welcome!

-Terry NQ4Y


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Re: VHF Antenna Design

Kevin K. Custer W3KKC
 

Terry Bartholomew NQ4Y wrote:

I am on a fact finding mission, gathering information about
the pros and cons of a particular antenna design/configuration.
This antenna will be used on a VHF repeater (Monteagle, TN.)
We need near 360 degree coverage. The repeater is at 2300
feet HAMSL if downtilt should be a consideration.
I have narrowed the choices down to either an 8 or a 16 element
dipole array.

1) Would a folded dipole have more gain than a "gamma matched"
dipole? I was told that a folded dipole has 1.5dB more
gain than a standard dipole.
I don't know if it is a full 1.5 db, but due to matching efficiencies, it is
better. One thing that is definitely better with a folded dipole is
operating bandwidth, a Gamma match fed dipole is limited in bandwidth as
compared to a true folded dipole.

2) What is the best way to orient the antennas on the tower
(Rhon 25G?)
a) put them all on the same side of the tower and point
them toward the tower...
See below for an explanation.

b) put them in two groups of 8, back to back...
c) start at the top and mount them down the tower, turning
each 90 degrees from the previous...
d) put them in two groups of 8, first group of 8 over the
second group of 8, point the lower group of 8 180 degrees
of the first 8?

3) Has anyone had any experience with the Maxrad 4 element dipole
array? Or would it perform like the old cushcraft 4 element
dipole?

All comments welcome!

-Terry NQ4Y
Since you said you need "near 360 degree coverage", I'll suppose you could
stand a slight null in one direction.
In exposed dipole arrays the mounting pole has an effect on coverage. In a 4
bay array with all elements in the same direction there is a null in the
direction of the pole. In an effect to counter the null... one can turn the
elements in all four directions to try to overcome this. As you know
(because of the laws of constructive and destructive interference's)
"maximum gain" can only be achieved by having the wave frontal hit all the
elements at the same time. In low band this theory works well, but on 2
meters there starts to be a compromise in available gain when the elements
are positioned around the pole due to the wave front hitting the elements at
unequal times thus being slightly out of phase. This situation really
becomes a problem at UHF because as the frequency gets higher the phase
shift is more due to shorter wavelengths. This problem does not exist in a
"stationmaster" style antenna due to the stacking of all elements on top of
one another.

I have had much better luck when using a 4 element dipole array on 2 meters
(in omni) using the DB products theory of positioning the elements in the
north south east west approach than the north east south west approach, for
what ever reason.
[Image]

A compromise to the compromise.
If a "double dipole" style exposed array is utilized, the effect of
staggering the elements is less. Why? As I have read in my "Antenna
Engineering Handbook" (by Johnson and Jasic) the concentric center of a
double dipole array is more so the -mounting pole-. The DB 304 for 2 meters
and the DB 420 style antenna for uhf utilizes this approach and are proven
performers.

You stated that downtilt may be a consideration. If the antenna gain is 5 or
6 dBd there may be no advantage in utilizing downtilt since the -3 dB point
would be fairly close to the repeater site. As antenna gains increase, there
are advantages in using downtilt. Downtilt can be achieved in two ways.
Mechanical and electrical.
Mechanical downtilt works well when a repeater only needs to work in one
direction. (multipanel arrays not withstanding)
Electrical downtilt works well in omni patterns but there is a loss in
overall gain. A typical 10 dBd stationmaster on uhf will only have 9 dBd
when built for downtilt. 10 db commercial stationmasters in the 450-460
range work great on 440 repeaters especially when vertical beam downtilt is
required. For more info on understanding vertical beam downtilt.. Go to


Top mounted fiberglass antennas suffer from precipitation static more so
than exposed dipoles do. Go to for
more info on precipitation static.

I use a DB Products 4 bay double dipole array on a 2 meter machine. I feel
there is no advantage to this antenna over a super stationmaster except for
the lack of precip. static. [Image]

My suggestion:
Since you seem to be leaning toward the dipole array, and not knowing if you
have the availability to the top or side of the tower for mounting please go
to

The DB 228 is an antenna with many advantages you are looking for. (no image
available)

There is a load of information on mounting and expected patterns on this
site. There is also a calculator and software section at

Very useful.

The DB 228 can be set up for omni directional coverage. Because this antenna
utilizes all elements in the same direction, a whole bunch of gain is
obtained. This style antenna is used on a repeater I do some work on that
the other moderator to this list operates (Dan Ruhe KE3UC) If specific
questions need answered they can be directed to either him or I through the
list.

Hope this helps,
Kevin