My unmodified DB224 had a VSWR of 1.8:1 in the 147 Mhz portion of 2 meters, in the 145 Mhz portion it went over 2.1:1. After the modifications it went down to 1.6:1 at 145 Mhz. On the receive portion I did not notice any changes, in the transmit, it did improve the power output, as expected. It
I did, and I am happy with it. 2 meters is well centered for that
antenna, and the SWR is nice and low.
James
Chappy wrote:
We plan to buy a new DB-224 antenna for 146.34/94.
We notice the popular model covers 150-160 MHz.
Also available is a model covering 138-150 MHz, for about $50
we have a 150 to 160 one on 2 meters and the coverage is not as good as it
could be.
- Original Message -
From: Chappy [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 07, 2006 12:06 AM
Subject: [Repeater-Builder] DB-224 versions
We plan to buy a new
JOHN MACKEY wrote:
I have the metal top on the Jeep Cherokee. I planned on using the following
antennas:
1. 9 ft whip with the Icom AH-4 auto-tuner for 6-75 meters
Ball or (ugh)bumper mount. Too tall for the roof.
2. Larson dual band antenna for 144/440 MHz
I prefer 1/4-waves...;c}
3.
I have a dual band magent mount antenna, the other day during high
winds I lost the antenna part. Do to financial issues I am unable to
buy another at this time. Does anyone know of away I can make it work
using something else in its place. Any help would be greatly
appreciated.
KL0LS
HELLO GROUP:_
ANIBODY HAVE 1 FILE .BIN FOR THE SM-1645 VHF , I APRECIATE
YOUR HELP
THANKS-GRACIAS...JESUS
Yahoo! Groups Links
* To visit your group on the web, go to:
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I am looking for a low end method (aka cheap grin) of
connecting our small campus repeater to our PBX so that users can dial
an extension and communicate over the repeater. We don't need to
initiate access to the PBX from the repeater side. Someone told me that
the CSI 5200 units could fit this
If this is for a repeater you definately want the one
designed for 2 meters. I've been screwing around with
modifying one of the 150's for months trying to get
the swr down. It would have been worth it to buy a
new one for 2m in the first place after all the time
you put in to it. Paul, kb9wlc,
Thomas Flint wrote:
I have a dual band magent mount antenna, the other day during high
winds I lost the antenna part. Do to financial issues I am unable to
buy another at this time. Does anyone know of away I can make it work
using something else in its place. Any help would be greatly
I've made an antenna whip out of a stainless steel
heliac welding rod. If you can scounge one, that
might work. Paul, kb9wlc
--- Thomas Flint [EMAIL PROTECTED] wrote:
I have a dual band magent mount antenna, the other
day during high
winds I lost the antenna part. Do to financial
issues
I have 2 of the GLB (bipolar I believe) preselectors that I was planning to
sell, as I packed it in on 224.66Mhz awhile ago. No activity or interest
in 222Mhz in this area. Too bad, it's a great band.
I'll be on the road for about 2 weeks, then I'll be testing them to make
sure they are
At 05:18 PM 4/6/2006, you wrote:
I am looking for a low end method (aka cheap grin) of connecting
our small campus repeater to our PBX so that users can dial an
extension and communicate over the repeater. We don't need to
initiate access to the PBX from the repeater side. Someone told me
that
Hi
you don't say what bands. I assume 144 and 430
why not as a temp measure just use a 1/4 wave rod
and change it for whatever band you want to use.
144 is around 20 inches 430 around 6
73
Steve
- Original Message -
From: Thomas Flint [EMAIL PROTECTED]
To:
what kind of repeater is
it?
- Original Message -
From:
NonProfit Radio
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, April 06, 2006 7:18
PM
Subject: [Repeater-Builder] Connecting a
repeater to a PBX
I am looking for a low end method (aka cheap
Hi Dan,
No problem with operation down in the ham band. Just make sure
you follow the factory adjustment instructions.
cheers,
skipp
www.radiowrench.com
Dan Blasberg [EMAIL PROTECTED] wrote:
Trying to find the Specs on a Decibel DB4381-b UHF Hybrid Combiner.
Need to know if it can be
Re: DB-224 VHF Antenna Versions
More than worth the extra money for the 138-150 model.
I have one of each model at the top of a nearly 200' tower...
both are very heavy beasts to install, but they work just
killer.
Also note the lower range model is much larger longer in
length. If your
When you start trying to diddle with using an antenna
like the multi dipole arrays out of band, the beam-width,
down-tilt and other major performance issues start to get
a little squirlly'
The results for the same antenna installed at different
elevations above average ground hight (agl)
Translation: Good Hand-held (portable) repeater operation/access
goes into the crapper. People with lower power hand-held radios
avoid using the repeater... or they're just noisy all the time.
cheers,
skipp
Maire-Radios [EMAIL PROTECTED] wrote:
we have a 150 to 160 one on 2 meters and
I'll help you Jesus, but I've been out of town working...
(I hate jet lag...)
If you don't get the file you need from someone else, I'll
email it to you this weekend as time allows.
Scanning in the manual is going to be on Monday at the
earliest.
cheers,
skipp
skipp025 at yahoo.com
I have a G-7 220 up at 150 Ft. LMR-400 80 Watts out of the Duplexer No SWR .
I have been offered a DB Products 21 Ft Commercial ant Tuned for 220. What
I have now gives me great coverage receive and Transmit are about Equal, I
always say it is Better to have a Hot receive then a Powerful
At 04:18 PM 04/06/06, you wrote:
I am looking for a low end
method (aka cheap grin) of connecting our small campus repeater
to our PBX so that users can dial an extension and communicate over the
repeater. We don't need to initiate access to the PBX from the repeater
side. Someone told me that
--- Thomas Flint [EMAIL PROTECTED] wrote:
I have a dual band magent mount antenna, the other
day during high
winds I lost the antenna part. Do to financial
issues I am unable to
buy another at this time. Does anyone know of away
I can make it work
using something else in its place.
Message 4
From: Chappy [EMAIL PROTECTED]
Date: Thu Apr 6, 2006 9:07pm(PDT)
Subject: DB-224 versions
We plan to buy a new DB-224 antenna for 146.34/94.
We notice the popular model covers 150-160 MHz.
Also available is a model covering 138-150 MHz, for about $50 more.
I've heard many
I believe the down tilt issue only happens with the fiberglass antennas.
Chuck
WB2EDV
wa9ba wrote:
Our new antenna is 1.:1 on
145.490 and the coverage has increased about 10 or 20 miles.
Apparently we had some downtilt that we no longer have.
I would recommend buying a DB224 cut for the
This maybe what you are looking for ...
http://www.zapatatelephony.org/app_rpt.html
Hope this helps
Andrew
--
---
KC2EUS - GM1YMI
KC2EUS/R 443.700 MHz 100 Hz PL
IRLP #4925 Elink #9969
www.kc2eus.org
www.kc2eus.org/sota
---
NonProfit
Thanks for all the ideas so far. The repeater is an old Ritron Responder. It has an internal factory controller but there is a Molex connector on the rear. The PBX does support analog phones.
YAHOO! GROUPS LINKS
Visit your group "Repeater-Builder" on the web.
I wonder how will you keep wrong extension dialers from using
an FCC License required radio system?
Neil - WA6KLA
Original Message
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Connecting a repeater to a PBX
Date: Thu, 6 Apr 2006
I just got a good comparison on the DB224, and my Diamond 500 antenna. FOr kick sakes I had a guy about 35 miles from the repeater in a mobile giving about 25 watts out. WIth the DB224, originally designed for the 150-160 Mhz split, VSWR of 1.8:1, at 130' in the air, fed with 150' of 7/8"
what freg are you on?
tone code?
thanks
John
- Original Message -
From:
NonProfit Radio
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 07, 2006 4:42
PM
Subject: Re: [Repeater-Builder]
Connecting a repeater to a PBX
Thanks for all the ideas so
One thing that is over looked when moding a multi-bay antenna such as
the 4 bay folded dipole array is the interbay spacing. Depends on who
made the antenna, but this should be either 1 free space wavelength or
1/2 of a wave. Changing the element sizes will improve SWR, but
without changing the
what freg are you on?
tone code?
thanks
John
You can sent the info to me
direct
[EMAIL PROTECTED]
you- Original Message -
From:
NonProfit Radio
To: Repeater-Builder@yahoogroups.com
Sent: Friday, April 07, 2006 4:42
PM
Subject: Re: [Repeater-Builder]
Skipp,
Thanks,
Dan
On Apr 7, 2006, at 12:26 PM, skipp025 wrote:
Hi Dan,
No problem with operation down in the ham band. Just make sure
you follow the factory adjustment instructions.
cheers,
skipp
www.radiowrench.com
Dan Blasberg [EMAIL PROTECTED] wrote:
Trying to find the Specs on
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