What good would it be to have the folded dipoles (erroneously referred to as
loops) constructed if there was no (impedance matching) harness to use with
them? For one to use 222-225 dipoles with the harness from a 150-160 DB 224 is
just plain stupid.
The coax matching lengths and impedance's
Sent: Friday, January 08, 2010 11:56 AM
Subject: [Repeater-Builder] Re: DB224-JJ Dimensions Wanted
I'm looking for a DB224-JJ. They are becoming hard to
find, even from manufacturers. I would also consider
a Hustler HD6-5 or something similar to that.
If someone
Add me to the list too!!
Tim KB2MFS
I'm looking for a DB224-JJ. They are becoming hard to
find, even from manufacturers. I would also consider
a Hustler HD6-5 or something similar to that.
If someone has the dimensions for the 224-JJ Loops and maybe
the spacing distance... I think I can get them made. A local
(to
I am about to hang a G7-220 on the side of my tower, what spacing did you use?
How far from the tower is your G7-220?
- Original Message -
From: skipp025
To: Repeater-Builder@yahoogroups.com
Sent: Friday, January 08, 2010 11:56 AM
Subject: [Repeater-Builder] Re: DB224-JJ
-
From: skipp025
To: Repeater-Builder@yahoogroups.com
Sent: Friday, January 08, 2010 11:56 AM
Subject: [Repeater-Builder] Re: DB224-JJ Dimensions Wanted
I'm looking for a DB224-JJ. They are becoming hard to
find, even from manufacturers. I would also consider
Subject: [Repeater-Builder] Re: DB224 Question
-I apologize for not giving a complete answer.
The short answer to the first question is yes.
The short answer to the second is no.
Al Crites
-- In Repeater-Builder@yahoogroups.com, wa9zzu wa9...@... wrote:
-No
Al Crites
collection resembling a DB222
that would do 152-158 range ?
Ed
Com-Rad Inc
ED
- Original Message -
From: wa9zzu
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, August 01, 2009 9:11 AM
Subject: [Repeater-Builder] Re: DB224 Question
-I apologize
AM
Subject: [Repeater-Builder] Re: DB224 Question
-I apologize for not giving a complete answer.
The short answer to the first question is yes.
The short answer to the second is no.
Al Crites
-- In Repeater-Builder@yahoogroups.com, wa9zzu wa9zzu@ wrote
Turning to the experiences of the group as all vendor info sources are
off for the weekend - ( probably could research this on line )
Do any of you have knowledge of the chatachteristics of 1/2 of the DB 224
antenna?
With harness' intact does either section of this array resemble the DB 222 (
-No
Al Crites
-- In Repeater-Builder@yahoogroups.com, Com/Rad Inc com-...@... wrote:
Turning to the experiences of the group as all vendor info sources are
off for the weekend - ( probably could research this on line )
Do any of you have knowledge of the chatachteristics of 1/2 of the DB
-I apologize for not giving a complete answer.
The short answer to the first question is yes.
The short answer to the second is no.
Al Crites
-- In Repeater-Builder@yahoogroups.com, wa9zzu wa9...@... wrote:
-No
Al Crites
-- In Repeater-Builder@yahoogroups.com, Com/Rad Inc com-rad@ wrote:
I have an idea for everyone. I have not tried this yet...so if
anyone has...and has had issues...LET US KNOW. I have a db420 that
we are putting up on a 300ft tower here in metro ATL.
This stuff is not only used on aircrafts, but look down at the very
bottom of the page. When shooting
If you measured the Diamond antenna's bandwidth, you'll
probably notice it's not nearly as broad banded as the
Decibel model/unit. It's possible the repeater tx (and or
rx) operation near the band edges would have a problematic
level of reflected power (swr). Such was the case with a
Doug,
Please send me a copy direct... I'll compare it with
my drawings of the 224E and 224A models, which I believe
I've already shared with Mike and will make available
to the group members.
thanks
skipp
skipp025 at yahoo.com
Doug Zastrow [EMAIL PROTECTED] wrote:
To All I Promised
Hi Dale,
I can email you a measured diagram of the db-224-E and
A models. Just contact me direct off the list.
skipp025 at yahoo.com
[EMAIL PROTECTED]
k0jxi [EMAIL PROTECTED] wrote:
What is the overall length of the dipole on a 224E? I thing it is 37
inches but cant remember for
When you stack Antenna's you gererally have a null directly above and
below them so you should be in the clear
Jeff
KG4TEZ
--- In Repeater-Builder@yahoogroups.com, Mathew Quaife [EMAIL PROTECTED]
wrote:
I wanted to see wht other's thought, or at least concerns. I have my
repeater antenna
Thanks Jeff! I think the concern is that people think this might be the reason that they are not able to hit the repeater from certain areas. I think it is more to do with elevation and such.
Mathew
Jeff [EMAIL PROTECTED] wrote:
When you stack Antenna's you gererally have a null directly above
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
--- 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
That might be true, but your original implication stated that changing
the element spacing was done to get downtilt; which is not possible.
Your original implication also said nothing about the harness which
would lead others to believe that the only thing needed to obtain
downtilt on a
Not only that but they don't seem to know what it means to read a
catalog before they decide on what to send you either.
Neil
Mike Morris WA6ILQ wrote:
At 05:55 AM 1/25/05, you wrote:
Hi all
I've followed this thread with great interest seeing that our club
just purchased a
Are you guys actually calling Tessco and asking technical questions?
Why? They are merely a warehouse. They don't make anything. If you have
technical questions about a product, you call the manufacturer.
We've had nothing but good from Tessco, but we don't expect them to know
a product
Hello All,
Tessco is fine and I would not say a bad word
but.
I buy things from time to time myself from them.
I work for a smaller warehouse (Family owned)
and they send all of us to seminars and
sometimes
factory training sessions on all products
we carry.
We do not employ order takers
-Builder] Re: DB224 Loop Lengths for
145.110Mhz?
Date: Wed, 26 Jan 2005 09:52:06 EST
Hello All,
Tessco is fine and I would not say a bad word but.
I buy things from time to time myself from them.
I work for a smaller warehouse (Family owned)
and they send all of us to seminars and sometimes
Dave,
Letsget the whole story out.
You your self told me you bought the controller
not from us! You said you got all the program
info
from them! You told me you got no help or support
from them. I called you to ask how you made out.
You told me that the repeater we sold you worked
100%
But
, dated 1/7/05)
Original Message
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED], Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 15:52:58 EST
Dave,
Lets get the whole story out.
You your self told me you bought the controller
not from us
best of 73,
Russ, W3CH
- Original Message -
From:
[EMAIL PROTECTED]
To: [EMAIL PROTECTED] ; Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 26, 2005 3:52
PM
Subject: Re: [Repeater-Builder] Re:
DB224
Dave,
Letsget the whole story out.
You your
, K5EYP
Original Message
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 16:45:25 -0500
WOW!
Sounds like Dave got his hand caught in the
cookie jar.
For those few on the list who do not know Dean.
You mite have
-
From: David Robichaux [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; [EMAIL PROTECTED];
Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 26, 2005 4:31 PM
Subject: Re: [Repeater-Builder] Re: DB224
Good that you taped our conversations. A federal offense, you know,
for not informing me
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 17:05:33 -0500
I will let Dean reply to this one but when you call it tells you the
phones
are taped.
I guess you are trying to air your half truths and this is not the
place.
Why don't you call them and not air it on this list
Russ,
Why not let them discuss the subject alone? We have no first hand
knowledge of the situation in question (I know I don't, and I seriously
doubt you do either), so our input is not helpful. This is not the time
to promote either party, take sides publicly, or to draw conclusions and
make
Could you fine people PLEASE take this dispute/debate off list? TIA and 73,
Kevin, K9HX
At 05:14 PM 1/26/2005, you wrote:
Russ,
Why not let them discuss the subject alone? We have no first hand
knowledge of the situation in question (I know I don't, and I seriously
doubt you do either), so
I agree!
I have been saying the same thing in the
passed two e-mails.
73 Russ
- Original Message -
From: Kevin Berlen, K9HX [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 26, 2005 5:22 PM
Subject: Re: [Repeater-Builder] Re: DB224
Could you fine
of payment. That I know
for a fact.
Very best of 73,
Russ, W3CH
- Original Message -
From: mch [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 26, 2005 5:14 PM
Subject: Re: [Repeater-Builder] Re: DB224
Russ,
Why not let them discuss the subject alone? We have
4:54 PM
Subject: Re: [Repeater-Builder] Re: DB224
Russ,
You don't remember, but it was on your recommendation that I called
Cook Towers in the first place. Ask Dean to play the tapes and I'll
FAX his cheat sheet to you, if you like. Wrong; wrong; wrong!
Also, please run your emails
Still not using the spell checker, I see.
Original Message
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 17:41:23 -0500
I agree!
I have been saying the same thing in the
passed two e-mails.
73 Russ
@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 17:45:42 -0500
All true,
I am going over tomorrow to see 1st hand what is going on and now
that Dave
said that I can hear the tapes in his e-mail they will play it. BTW
it is so
un-like Dean to give bad info. That is all
This is getting old!!!
- Original Message -
From: David Robichaux [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 26, 2005 4:07 PM
Subject: Re: [Repeater-Builder] Re: DB224
It's lieu not lew, Russ. The payment terms on the repeater
I'm finished!
Original Message
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224
Date: Wed, 26 Jan 2005 16:11:00 -0700
This is getting old!!!
- Original Message -
From: David Robichaux [EMAIL PROTECTED]
To: [EMAIL
When I converted my 224 to VHF amateur band, the element length went
from 35 inches (150mhz unit) to 37 inches (144mhz). The spacing on
the elements was somewhat limited by the new harness length. Had to
work with it a good bit to get somewhat equal spacing on the pole.
Had to lengthen
, 2005 5:46 PM
Subject: Re: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
russ wrote:
Hey every one,
Let us not forget that they change the spacing to get down till on the
DB-224.
Wrong.
The only way to get downtilt on a binary fed exposed dipole array is to
either build
KAG0378
EIEIO 2722
Acworth Georgia
-Original Message-
From: Chuck Kelsey [mailto:[EMAIL PROTECTED]
Sent: Monday, January 24, 2005 6:46 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110
Mhz?
Mike's suggestion is the best method
- Original Message -
From: Kevin King [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 24, 2005 10:29 PM
Subject: RE: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
There is a model folded dipole I saw for 30 megs that had tunable rods at
the top
,
- Original Message -
From: Kevin Custer [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 24, 2005 5:46 PM
Subject: Re: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
russ wrote:
Hey every one,
Let us not forget that they change the spacing to get down
This is also why you get different spacing on
the dipoles. It also depends what year in time
your harness was made. Over the years they
changed coax with new owners (of DB) and that
also
has a spacing change. Be careful. If you are
and do it right you will not have to buy a new
DB-224.
If
Hi all
I've followed this thread with great interest seeing that our club
just purchased a DB224E to replace an aged stationmaster.
Question...We ordered the 138-150 mHz model, Tessco part # 62446.
There was nothing in the paperwork referencing element spacing or
anything else along those
Well we all deal with Tessco but when you deal with
the
large box house you get NO consumer service. And
no
tech support. Yes you could have ordered your 224
from
Tessco tuned for your transmit but you would have
had
to wait for it.
Good luck!
Dean,
Yahoo! Groups Links
To
, January 25, 2005 9:01 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
The thread concerns taking an out of band antenna down to the ham portion of
the band - necessitating a new harness and different spacing. If yours
- Original Message -
From: rtoplus [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, January 25, 2005 8:55 AM
Subject: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
Hi all
I've followed this thread with great interest seeing that our club
just purchased
At 05:55 AM 1/25/05, you wrote:
Hi all
I've followed this thread with great interest seeing that our club
just purchased a DB224E to replace an aged stationmaster.
Question...We ordered the 138-150 mHz model, Tessco part # 62446.
Tessco is a out of sight, out of mind organization.
They do not
Thanks all for the infowipes nervous perspiration drops off
brow I thought it would be fine, but I wanted to make sure. We
will be side mounting the antenna so I will be ordering the DB5001
mounting kit.
73
Bob, GMRS WPVV845, Amateur KG4WAD, LMRS WPXC892
Yahoo! Groups Links
*
I have seen the screw in the ends modification and am leaning in
that direction. But they need to be well sealed I am sure to prevent
corrosion and the associated noise that can be produced.
I understand that the element to the support contact needs to be
welded also to remove that
The distance from the top of the pole to the top dipole is not
critical and could easily be moved up to get more room down below for
more spacing. The dipoles need to work up against the pole for proper
impedance but if the top of the top dipole is 3-4 down that should be
OK. If you still
, 2005 9:00 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
The distance from the top of the pole to the top dipole is not
critical and could easily be moved up to get more room down below for
more spacing. The dipoles need to work up
is the
same group that uses a mag mount mobile antenna.
Just an observation. You may disagree.
Chuck
WB2EDV
- Original Message -
From: Mike Morris WA6ILQ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 24, 2005 12:20 AM
Subject: Re: [Repeater-Builder] Re: DB224
Hello All,
Do not count on this info being right.
The top needs to be right from the
top of the mast support pipe to the
1st dipole and then center to center
on each after. If the support pipe is
not long enough get a longer one. They
come in different lengths one for 222
is shorter then
Part of the different's is between the harness.
Different'sin factors in the coax used.
That is why we have to watch out here at
work when repairing DB-224's. Be careful.
Over the years and with change of ownership
DB has made changes along the way.
Dean Westbrook, EE,PE.
At 04:29 PM 1/23/05, you wrote:
I have seen the screw in the ends modification and am leaning in
that direction. But they need to be well sealed I am sure to prevent
corrosion and the associated noise that can be produced.
I understand that the element to the support contact needs to be
welded
] [mailto:[EMAIL PROTECTED]
Sent: Monday, January 24, 2005
5:44 AM
To:
Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder]
Re: DB224 Loop Lengths for 145.110
Mhz?
Hello All,
Do not count
on this info being right.
The top
needs to be right from the
top of the
mast
-
From: Mike Morris WA6ILQ [mailto:[EMAIL PROTECTED]
Sent: Monday, January 24, 2005 6:17 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
At 03:46 AM 1/24/05, you wrote:
Mike's suggestion is the best method and the one I would
-Builder@yahoogroups.com
Sent: Sunday, January 23, 2005 6:05 PM
Subject: [Repeater-Builder] Re: DB224 Loop Lengths for 145.110 Mhz?
I just measured mine (not as cold in North Florida as for you guys,
but it was interesting to measure the deminsions on my two antennas:
Both Had top element
russ wrote:
Hey every one,
Let us not forget that they change the spacing to get down till on the DB-224.
Wrong.
The only way to get downtilt on a binary fed exposed dipole array is to
either build the phasing harness so the electrical length feeding each
element is slightly longer in phase
Well I am not so sure on that one just yet. Was told that the first element
was 26 from the top, and each element was 58 1/4 center to center from
there, and if that is true, then I'm going to end up with my last element
down into the clamp area. I've been sick most of this week, so have not
This is 100% correct right of the DB chart.
You will be just fine if you set your DB-224
up this way!
Dean Westbrook, EE,PE.
Cook Towers, INC.
Yahoo! Groups Links
To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/
To unsubscribe from this
It is 28" from the top of the pipe not from the end
cap on the top of the antenna.
Dean,
Yahoo! Groups Links
To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/
To unsubscribe from this group, send an email to:[EMAIL PROTECTED]
Your use of
-Builder]
Re: DB224 Loop Lengths for 145.110
Mhz?
This is 100%
correct right of the DB chart.
You will be
just fine if you set your DB-224
up this way!
Dean
Westbrook, EE,PE.
Cook Towers,
INC.
Yahoo! Groups Links
To visit your group on the web
Ok, was given 26, might have wrote
it down wrong. Thanks for clearing that one up.
Mathew
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 23, 2005
2:22 PM
To:
Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder]
Re: DB224 Loop Lengths
Thanks, I hope you feel better soon.
Russ
N4KOX
--- In Repeater-Builder@yahoogroups.com, Mathew Quaife [EMAIL PROTECTED]
wrote:
Well I am not so sure on that one just yet. Was told that the
first element
was 26 from the top, and each element was 58 1/4 center to
center from
there, and
pipe is the
wrong one.
Sounds like you will have fun when the weather breaks.
73 Russ, W3CH
- Original Message -
From: Mathew Quaife [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, January 23, 2005 5:08 PM
Subject: RE: [Repeater-Builder] Re: DB224 Loop Lengths
Oh indeed, will give it a shot and see what happens, hate to mess it up
since I have to redrill the holes for the new harness. As for fun when the
weather breaks, you bet, a 100' Self Support Pyrod to install, at least 4
other towers for GMRS and the repeater, all over 100'. Sounds like a busy
and it
has 35 inch loops on an 18 ft mast.
John Lock KF0M
Wichita KS
kf0m at arrl dot net
-Original Message-
From: Mathew Quaife [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 23, 2005 4:08 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: DB224 Loop Lengths
I just measured mine (not as cold in North Florida as for you guys,
but it was interesting to measure the deminsions on my two antennas:
Both Had top element center 26 from top of pipe (so that was OK.)
Both had 34.25 inch loops (top to bottom)(reasonable)
Both had 62 separations from center
element to extend them
out to the 37 inch dimension.
John Lock KF0M
Wichita KS
kf0m at arrl dot net
-Original Message-
From: highlandfl [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 23, 2005 5:05 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: DB224 Loop
Do you have any means to scan paperwork?
If so, could I get you to scan any paperwork that came
with the 224 and 228?
If you look at
http://www.repeater-builder.com/rbtip/ant-sys-index.html
and scroll down to the DB antennas section you will see
that all we have is the DB201 and the DB420.
Someone posted this link not long ago about this subject.
http://www.kc5dgc.net/db224.htm
--- In Repeater-Builder@yahoogroups.com, w9mwq [EMAIL PROTECTED] wrote:
Can anyone tell me the impedance of the elements on a DB224
Antenna. I need to rebuild a phasing harnass for an antenna that
has
Assuming the elements really are 100 ohms, you can match 4 of them using
only 50 and 75 ohm coax. Off each element, a 1/2 wave 50 or 75 ohm section
will transfer the 100 ohm element impedance to the other end. Each pair is
T'd, giving 50 ohms at each T. From there, an odd 1/4 wave 75 ohm
: [Repeater-Builder] Re: DB224 Element Impedance Info Needed
Assuming the elements really are 100 ohms, you can match 4 of them using
only 50 and 75 ohm coax. Off each element, a 1/2 wave 50 or 75 ohm section
will transfer the 100 ohm element impedance to the other end. Each pair is
T'd, giving 50
The top half can be used as-is. I believe the impedance at the
center connector is 50 ohms. The bottom half cannot, because the
harness has the feeder for the top half as part of it. It cannot
just be left hanging.
Laryn K8TVZ
--- In Repeater-Builder@yahoogroups.com, johnmichaelwelton
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