Thanks for the response Russ.
I got an email stating that all DB-411's were out of production. I still see
it listed on their website though. Is anyone using a 450 version on a ham
repeater? My site is on the side of a hill so an omni would just dump half
the power into the hill. I think
Anyone know if it's possible to mod a 25w UHF Maxtrac PA to the 2w version?
Can the final be removed/bypassed so just the driver is being used?
I'd like to use it for a link but the darn thing folds back the power output
after about a minute of TX no matter where I set the power level at in the
Not a good choice. It would take two radios and the SX doesn't have a tight
front end.
Chuck
WB2EDV
- Original Message -
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, May 24, 2005 8:54 PM
Subject: [Repeater-Builder] delta sx uhf mobile radio as repeater
Are you sure that you want to use a Hustler Spirit and 7/8 hardline?
I would consider a high quality antenna so that you don't have to do this
again in the near future. I'm not saying that the Spirit is a particularly bad
antenna, just that you want the best you can afford. You don't want to
Russ is right on the nose with this reply. I have utilized several
binary fed dipole arrays originally cut for over 150 MHz and have had
absolutely no problems at all. They duplexed well and provided
reasonable SWR.
Kevin Custer
Russ wrote:
I had a DB-224 cut for
151.955 from
Greetings;
I'm new to the list. Just purchased an E.F.Johnson LPI (Low Power Industrial)
UHF Repeater Johnson part number 242-3450-105. Has a 4 cavity compact Celwave
#633-A-2 duplexer (50Db), and power out is 2 Watts. This unit's crystals are
set up for receive - 466.7625Mhz, and transmit -
I belive in December 2003 DB stated that all of the ham cut
antennas were to be dropped from the line. Not sure if it was VHF and UHF
but
I know for a fact UHF was. They may have worded it as all custom cut at
the time.
I bought several of them for a project and ended up with some extras. I
I just bought a DB-411 in April for one of our receiver sites (Voting) they
still made it then. They drop things faster then I have time to keep up
with. The good thing is Andrew is trying to sell DB as they did with the A/S
mobile line. This could be a good thing if they (who ever buys DB) where
We put a DB 224 up after loosing 2 Diamond 510 antennas and a
station master to lightning about 5 years ago. We replaced the
fiberglass antennas about 1 every year, the DB 224 is DC grounded
and doesn't seem to mind the lightning!
I aded 1 5/8 inches of aluminum to each loop to get the SWR
Being the CHEAP S.O.B. that I am, I was rather shocked at the price
of the DB-411 and similar antennas when I got tired of replacing the
old fiberglass types every year. These fiberglass colinear antennas
were easily damaged by lightning and corona from the severe storms we
get here in the
Steve,
I use the same radios as links as well. I turn them down to 8-10wt but no
lower than that since they can get unstable.
Mike
Oregon Repeater Linking Group
Mike Mullarkey
6539 E Street
Springfield, OR 97478
[EMAIL PROTECTED]
www.orlg.org
-Original Message-
From:
On Wednesday 25 May 2005 09:02 am, Gary wrote:
I made the elements out of 1/4-inch brass so I don't have
to worry about a weap hole to drain water. The supporting
element for the dipole is 1-inch aluminum square tube.
The harness was built from RG- 11 coax.
That is very interesting Gary.
I seem to recall that was only for small orders, and
larger orders (100 or more) were still being shipped.
Joe M.
Rich Garcia wrote:
I belive in December 2003 DB stated that all of the ham cut
antennas were to be dropped from the line. Not sure if it was VHF and UHF
but
I know for a fact
how about the manual???
mdmBill Cole [EMAIL PROTECTED] wrote:
Greetings;I'm new to the list. Just purchased an E.F.Johnson LPI (Low Power Industrial)UHF Repeater Johnson part number 242-3450-105. Has a 4 cavity compact Celwave#633-A-2 duplexer (50Db), and power out is 2 Watts. This unit's
This is a little off topic but I could use some help.
I am working on a fire truck that is getting interferrence on the VHF
(156.075mhz) from the trucks wiring.
If I put an HT near I get the interferrence on the HT. When I disconnect the
battery it goes away.
We removed one fuse at a time
DB and the Ham cut. There new policy is you have to buy 50 of each antenna
to get it in the Ham band. you can still get the DB-404,408 and 420 in the
Ham band as long as the dealer you are dealing with is welling to buy 50 of
each and sit on them till the next Ham buys one.. It is the same way on
Russ wrote:
Thank goodness there are still dealers out there that will still stock Ham cut
antennas.
Ed and Kathy Cook is one dealer that still carries them:
http://www.repeater-builder.com/cook-towers/
Here's a deal I have set up with Cook Towers for you folks... Mention
you seen their
http://share.shutterfly.com/osi.jsp?i=EeAN2zFsxbN2zFeg
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have you tryed one of the old micor/mitrek line isolation filters you know the
old black box under the hood?
___
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do not forget to properly ground the feedline.
___
Get Juno Platinum for as low as $4.97/month!
Unlimited Internet Access with 250MB of Email Storage.
Visit http://www.juno.com/half to sign up today!
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Hello Gary - I wonder if I could impose on you and ask you how you built the
harness for
the folded dipoles. I recently built a 4 element two meter version, thinking I
knew what I
was doing, and found out that I had built a very nice beam antenna. This
antenna has a tre-
mendously sharp null
Hello Paul,
As I recall the end to end length of the dipole was
11-1/2 inches with 1-3/8 spacing within the dipole
element and 1-3/8 spacing from the dipole to the
mounting pole. The 1-inch square dipole mounting bar
was cut 6 long and attached with a U-Clamp to the
vertical mast. The distance
Nice pictures guys.
- Original Message -
From: Kevin Custer [EMAIL PROTECTED]
To: Repeater Builder Repeater-Builder@yahoogroups.com; Repeaters List
at Yahoo [EMAIL PROTECTED]; Repeater List
[EMAIL PROTECTED]
Sent: Wednesday, May 25, 2005 12:16 PM
Subject: [Repeater-Builder] (OT?)
Looks like it was a blast!!!
Hey Kevin, how much will one of those T-shirts cost me? Would be cool to be
sportin' the colors at field day..
mike
K5JMP
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of vmckever
Sent: Wednesday, May 25, 2005
The going commercial rate for the below install would
be about $1200 to $3000 plus any parts. Depends on
the event and actual location.
Half the battle is getting someone to show up
as promised (day and time), charging the original
quote amount, using legal help, having enough
insurance,
I saw a Sinclair demo at IWCE Las Vegas last
month about intermod from new re-used
hardline connectors.
Wrong re-use assembly of a typical hardline
connector can be a serious IMD Generator, both
new and used. Who would have thought..?
The major idea that I can pass along to most of
you
I will have to ask my wife. See's the one that designed and made them. I
have forwarded this to her.
Scott
Scott Zimmerman
Amateur Radio Call N3XCC
612 Barnett Rd
Boswell, PA 15531
- Original Message -
From: Mike Perryman [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent:
Hi Folks,
I'm considering purchasing a 45A IOTA Switched Power
supply to power a UHF Micor and am concerned about
switch PS noise.
Has anyone tried these supplies with UHF radios? Is
noise experienced?
Insight greatly appreciated. Thanks.
--
Nick KB1GZN Boston, MA
Yahoo! Groups Links
I have one of the 75 amp supplies working at a remote
site. We have not seen any noise from the unit, but
our equipment is all VHF and UHF, haven't checked it
down in HF, but at UHF we have seen no problems. We
have 20 UHF RX's and 6 VHF and have not seen any
degradation.
These IOTA's run much
--- wa9ba [EMAIL PROTECTED] wrote:
We put a DB 224 up after loosing 2 Diamond 510
antennas and a
station master to lightning about 5 years ago.
One of the advantages of a four-bay dipole antenna
over a fiberglass
vertical of similar gain is that the vertical
bandwidth is remarkably
The tower co. I use all ways shows up on time. The have uniforms. he price
is as quoted. All paper work is filed with copies to me. NARTE is a world
wide group of tower people you can do a search for them on the web for some
one close to you. Yes the price mite be steep some times but you get what
Scott, If you have the logos go to http://www.cafepress.com and upload
everything. Their stuff is very good!
Scott Zimmerman wrote:
I will have to ask my wife. See's the one that designed and made them. I
have forwarded this to her.
Scott
Scott Zimmerman
Amateur Radio Call N3XCC
612
If you want just a plain ol' tie dyed t-shirt you can order one from
www.color-tone.com, which is the cheapest place that I found ($7.99 +
shipping). However, if you want one complete w/ your name, callsign and the
Repeater Builder logo (see the picture of Avery with the no-BPL sticker)
I'll have
Elisha,
Sounds like a deal to me..
Should I send 20 bucks to the RB PayPal account, or do you prefer a personal
check. Whatever a 40-regular translates to is my approx size... Can't wait
to show off your handi-work at field day!!
I really liked the No BPL sticker. I work as a Consulting
Mike Perryman wrote:
I really liked the No BPL sticker.
and
Can you guess which side of the issue I'm on?
Is that a trick question? ;-
Joe M.
Yahoo! Groups Links
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http://groups.yahoo.com/group/Repeater-Builder/
* To unsubscribe from this
Mike Perryman wrote:
Looks like it was a blast!!!
Hey Kevin, how much will one of those T-shirts cost me? Would be cool to be
sportin' the colors at field day..
We had a great time.
The shirts were hand made by Scott's wife Elisha. I suggest you contact
her directly and see if she is
Years ago, the 2 way shop I was working in ran into the same issue with
a truck in a fleet that we took over. The previous shop had just detuned
the receiver to the point that it was nearly deaf, but since it was a
city utility truck that ran around under a repeater, the symptoms were
so
You cannot make a repeater with a Delta radio,you can if you use
two,but its a poor candidate. There are much better solutions out
there,see the website associated with this remailer.
[EMAIL PROTECTED] wrote:
Hello group
I would like to know if delta sx uhf mobile radio can be moded
- Original Message -
From: Brent [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, May 24, 2005 6:08 PM
Subject: Re: [Repeater-Builder] Re: Info needed on Standard RPA-5/90WA
I have two of them in use and one in vhf and the vhf is a 150w and one of
my uhf are a
Good suggestion:
You might also try bringing the hot spot to chassis ground by tightly
wrapping a 1 braided shield around the bundle of wire - three inches to
either side of the hot spot and securing one end of it to chassis ground
making sure not to inhibit air flow.
I would not suggest
I knew when Andrews bought DB Products that is the way it would turn
out. I have consulted for Andrews Corp. DB products was much like a
sister company that I worked for at one time, If you were a customer
or may be a custmer they would bend over backwords for you. In this
day and time of the
I'm sure that most of you folks know by now that DB Products no longer
sells duplexers nor supports them or the ones that are already in the
field. There is a little company that Took over that part of the
business... actually it's the company that made them for DB products,
And I'm told they
Don't know what engine you have in the fire truck but Detroit had a problem
several years ago with their DDEC ECM radiating spurs.
Look in the 30-50 MHz range with your analyzer and see if you have spikes
every MHz or so.
Detroit replaced the ECM under warranty and the problem disappeared for
Skipp,
Verrry interesting! By curious coincidence, the installation
instructions for the new Andrew Heliax connectors states that the
connector must first be tightened and then removed to inspect the flare
before re-tightening. I understand that the advice against re-using
connectors is
I re-use connectors if they are placed where I can get to them easily.
I would never ever re-use a connector on top of a tower or other high
place I can't get to easily. I hate going up to fix antennas. (Can you
tell I have done this once or more )
James
Eric Lemmon wrote:
Skipp,
Just for curiosity sake, and please no debates, I'm only curious at
this point for knowledge, and to satisfy a question that was asked of
me. Currently I have a 6 cavity TX/RX duplexer system, which has 2.2
dB of isolation. The system is running 125 watts into the duplexer,
getting just
Mathew Quaife wrote:
Just for curiosity sake, and please no debates, I'm only curious at
this point for knowledge, and to satisfy a question that was asked of
me. Currently I have a 6 cavity TX/RX duplexer system, which has 2.2
dB of isolation. The system is running 125 watts into the
Do the instructions mention anything about torque settings for
tightening versus re-tightening?
TNX,
BOB
KE5CTY (old calls WB5ZQU - WY5L)
http://www.qsl.net/ke5cty
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon
Sent:
Do a search for Tie Dye. They have some stuff.
Scott Zimmerman wrote:
If you want just a plain ol' tie dyed t-shirt you can order one from
www.color-tone.com, which is the cheapest place that I found ($7.99 +
shipping). However, if you want one complete w/ your name, callsign and the
Repeater
I am assuming you mean 2.2dB of insertion loss, not isolation?
4 cavity duplexers typically offer 75-85dB of isolation and 1.2-1.5dB
of insertion loss, Where 6 cavitys are from 90-110dB. But can your
reciever handle the extra noise?
I would be more concerned about desensing the RX than going the
99% of the users would never notice it, assuming that reducing the can count
didn't cause any desense.
Chuck
WB2EDV
- Original Message -
From: Mathew Quaife [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, May 25, 2005 9:57 PM
Subject: [Repeater-Builder] What
Thanks Kevin and all, and yes, I did mean insertion, not isolation, got interupted half way through the question. I did not want to answer the question why 6 rather than 4 cavities without getting a solid answer. Why I have six cavities is becuase that Is what I had the opportunity to buy, why
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey [EMAIL PROTECTED]
wrote:
99% of the users would never notice it, assuming that reducing the
can count
didn't cause any desense.
Not to argue your answer Chuck because you are absolutely right. I
will go a step farther and say that 100% of
--- In Repeater-Builder@yahoogroups.com, wa9ba [EMAIL PROTECTED] wrote:
One thing we did do is drill
1/16th holes on the botom of each loop to let condensation out.
U... did that, and was sorry.
I thought I was smarter than DB when I saw that the holes in the
brand new dipoles were
--- Mathew Quaife [EMAIL PROTECTED] wrote:
Just for curiosity sake, and please no debates, I'm
only curious at
this point for knowledge, and to satisfy a question
that was asked of
me. Currently I have a 6 cavity TX/RX duplexer
system, which has 2.2
dB of isolation. The system is
Well the figures I took are from memory, but your right, it's more likely about 80 watts out, but at either rate, got the answer that I was looking for. I'm not changing anything here, as it works, and if I mess with it, it WON'T, but one of the students hit me with this question, and I was
Does anyone have information on the Mobile Mark CV-6450 Base Antenna??
This antenna is supposed to have 9.2 dB 445-475 MHz, does anyone have any
documentation or experience with this antenna??
Tim KD5CKP
http://www.w5obm.org
Yahoo! Groups Links
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OK -- well it is my experience that the first should be less than the
final. All you are doing on the first go around is seating the metals and in
the last you are doing a final mating - assuming the readings of the first
mating meet specs.
But that may be different now that the material types
www.dbspectra.com This is the company that took it over
Jamey Wright
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Coy Hilton
Sent: Wednesday, May 25, 2005 6:56 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Speaking
hi all,
great discussion here
well, 6 cans are better for the tx power you operate ,
you need a good separation between your receive and your tx .
with 6 your are in business
4 can be used too but i would suggect droping at 90 or 85 watts
also they depends also if you had not problem adjusting
--- Mathew Quaife [EMAIL PROTECTED] wrote:
Well the figures I took are from memory, but your
right, it's more likely about 80 watts out, but at
either rate, got the answer that I was looking for.
I'm not changing anything here, as it works, and if
I mess with it, it WON'T, but one of the
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