There were several CB antennas that used this method, but I don't recall any
commercial antennas that did.
Chuck
WB2EDV
- Original Message -
From: Eric Grabowski
To: Repeater-Builder@yahoogroups.com
Sent: Monday, February 22, 2010 10:33 PM
Subject: [Repeater-Builder] Re:
i have only seen the 5% rule applied when building yagi antennas. the
reflector is normally 5% longer and all subsequent directors are are 5% shorter
thn the preceding element!! now , as for the DB-201 ground plane, It is a 1/2
wave folded loop ground plne which exhibits no gain. the
Hi,
Does anyone have a schematic for the 19B801971P13 data cable, used on the MRK I
think
Thanks,
John
Hello to all,
Any one knows where to get the Software upgrade for the controller RC-85?
Linkcomm told me they don't have it.
Thanks
73,
Felix, KC7WVE
Don't know who you talked to over there but here is the link for it off of
their own website...
http://www.link-comm.com/ftp/acc/rc85.zip
On Tue, Feb 23, 2010 at 1:02 PM, felix rosasco felixp...@yahoo.com wrote:
Hello to all,
Any one knows where to get the Software upgrade for the
Eric Grabowski ejgrabow...@... wrote:
Skipp, I wonder if the antenna you stole this idea
from was the Hy-Gain GPG-1 high band ground plane antenna
we used to use in the late '60s and early '70s. The dc
ground was a real feature of this simple antenna.
Sure wish I could remember how
I was able to match up the audio coming through the repeater and the
local AM station. My latest theory is that their signal is so strong
that its blowing into the receiver's front end and multiplying/mixing
there (past the bandpass filters and all). They are heterodyne receivers
after all.
Al Wolfe k...@... wrote:
The straight skinny about the beta or hairpin match
can be found in a QST article, April 1962, by Gooch and
Gardiner. It explains how this matching scheme works. The
driven element is shortened making it capacitive.
Then the inductive reactance of the hairpin
Is it possible the AM signal is getting into an audio stage instead of the
receiver front end? I had that happen once.
- Original Message -
From: KT9AC kt...@ameritech.net
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, February 23, 2010 4:01 PM
Subject: Re: [Repeater-Builder] Re:
I'm considering an ICE broadcast high-pass filter that cuts off at
1.8Mhz (model 402). I have an email into them to see how well
it might
work at 448 Mhz.
Tony
Before you spend any real money, you might just try a shorted quarterwave
stub. If you want, I can make one up quick and see
How about 1.25 MHz RF coming down the outer jacket of the UHF antenna
and into the ground of the system? You have about 200 ft or so of
coax? Try a mag mount antenna temporarily.
Not really sure how you'd cure that though. Not sure if snap on RF
beads would work on coax with a signal going in
I would have thought good grounding practices on the feeder and equipment at
the base of the tower would have pretty well bypassed any 1.25MHz stuff.
Ferrite 'beads' will reduce common mode pickup on coaxial cables without any
effect at all on the signal inside the coax.
Don't expect too much
Hi Tony,
Are you using a duplexer on this repeater?
A lot of cavity filters act as a short circuit to DC and low frequencies, so
additional filtering is unlikely to help.
I can only think of one type of cavity that has a DC path between from input to
output (via an internal inductor) and not to
I appreciate the contribution of the information found in the ARRL April 1962
QST article, which I have reviewed, and the technical parameters of impedance
matching provided, however the information presented relates to the shortening
of a 1/2 WL simple dipole from the resonant freq. terminal
If you wouldn't mind...that would be interesting to see how it works.
DCFluX wrote:
How about 1.25 MHz RF coming down the outer jacket of the UHF antenna
and into the ground of the system? You have about 200 ft or so of
coax? Try a mag mount antenna temporarily.
Not really sure how you'd
Mark et al,
Yes, this repeater is using the Motorola T1500 series bandpass cavities
(two each for rx and tx). I've tried running rx and tx both duplex and
seperate (borrowing a nearby antenna with permission). I can hear the
interference underneath my signal when I'm about 2 miles away and
How long is your feed line? Do you have any toriods on your feed line, where it
comes in your shack?
To: Repeater-Builder@yahoogroups.com
From: kt...@ameritech.net
Date: Tue, 23 Feb 2010 16:01:45 -0600
Subject: Re: [Repeater-Builder] Re: Can the 4th harmonic of 1250 AM keep UHF
I am in need of a cabinet key for an old Motorola base station cabinet. It
is an old low band 1/4 kw rig. Had 100TH tubes in final. This is the 6 foot
tall cabinet.
Anyone know the key number for these?
Have a key?
Also have an old GE progress line base cabinet that needs a key. This
cabinet is
The Motorola key should be a 2135 and the GE Key is probably a BF10A,
they are hard to find but around-I can make you copies if you want to
pay the key making price and postage.
Andy W6AMS
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary
Andy,
Any possibility that you could come up with an EFJohnson Deskmate station
key??
de Lee
K4LJP
73
On Tue, Feb 23, 2010 at 9:18 PM, Andrew Seybold
aseyb...@andrewseybold.comwrote:
The Motorola key should be a 2135 and the GE Key is probably a BF10A,
they are hard to find but around—I
any motorola key 2135 will fit, we always made them the same unless you ordered
it specially keyed
Raymond P. Kalbfeld
16850 Collins Avenue Suite 112-463
Sunny Isles Beach, Florida 33160
Cell 786-267-7555
Office 305-831-1488
rpkalbf...@hotmail.com
To:
Let me see if I have one—will let you know
Andy
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Lee Pennington
Sent: Tuesday, February 23, 2010 6:26 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Motorola cabinet key
Just because I gamble a little - I'm going to bet that the older Motorola
cabinet is a CH751. This is a one sided key unlike a 2135.
The Micor cabinets became a 2553. Cabinet Keys more prominent in the high
power stations.
I'll go along with the BF10a for the Prog Line - that's for
Hi Bill,
The key is like a 2135 and a 2135 will fit in the lock (I have a 2135) but
it will not open it. I actually have two of these station cabinets and my
2135 key will not open either cabinet.
I kind of remember that some of the cabinets had a different key from the
mobiles way back
Well I'd try a 2 3 3 5, fits where a 2 1 3 5 goes and may do the job.
Jim- WA9FPT
- Original Message -
From: Gary Schafer
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, February 23, 2010 9:54 PM
Subject: RE: [Repeater-Builder] Motorola cabinet key wanted
Hi
Chicago Lock Co, key # 2553
- Original Message -
From: Gary Schafer
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, February 23, 2010 10:54 PM
Subject: RE: [Repeater-Builder] Motorola cabinet key wanted
Hi Bill,
The key is like a 2135 and a 2135 will fit in
Dumb fingers... make that #2 5 5 3.
Jim- WA9FPT
- Original Message -
From: Gary Schafer
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, February 23, 2010 9:54 PM
Subject: RE: [Repeater-Builder] Motorola cabinet key wanted
Hi Bill,
The key is like a 2135
You mean 2553 right?
James K7ICU
--- In Repeater-Builder@yahoogroups.com, Jim McLaughlin
dearbo...@... wrote:
Well I'd try a 2 3 3 5, fits where a 2 1 3 5 goes and may do the job.
Jim- WA9FPT
- Original Message -
From: Gary Schafer
To: Repeater-Builder@yahoogroups.com
That's what I said !...made a mistake on the first posting.
Jim- WA9FPT
- Original Message -
From: cracked
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, February 23, 2010 10:23 PM
Subject: [Repeater-Builder] Re: Motorola cabinet key wanted
You mean 2553
how many Johnson keys you need?
Raymond P. Kalbfeld
16850 Collins Avenue Suite 112-463
Sunny Isles Beach, Florida 33160
Cell 786-267-7555
Office 305-831-1488
rpkalbf...@hotmail.com
To: Repeater-Builder@yahoogroups.com
From: localjunkpedd...@gmail.com
Date: Tue, 23 Feb 2010
then it takes a MOT1 key i will look for one I know i have a bunch of both keys
Raymond P. Kalbfeld
16850 Collins Avenue Suite 112-463
Sunny Isles Beach, Florida 33160
Cell 786-267-7555
Office 305-831-1488
rpkalbf...@hotmail.com
To: Repeater-Builder@yahoogroups.com
From:
Yep - then it's a 2553 (I think it's a 255x) just can't remember the last
number.
They are more difficult to find. Mine is a copy - and there was only room
to print the 255 and the X couldn't fit on the key.
If someone doesn't take care of you here - I can get copies.
Bill Hudson -
Sorry for posting what has already been said. Lots happened in the last
couple of hours. Like is said - it's probably a Cabinet 2553. The MOT-1 is
not for cabinets so don't waste your time.
Bill - W6CBS - Motorola Class of 1983
_
From: Repeater-Builder@yahoogroups.com
Depending on how far back you go... Motorola has built
cabinets with at least 4 to 6 different possible locks.
Some of the old ones are really obscure...
MOT-1
2553
2135
... and a few that look like the above numbers but
are not.
Someone mentioned the CH751, which I also have but I
re: Micor UHF Repeater Base 9.6 vdc current requirement?
Any of you Micor People know the actual total 9.6 volt supply
current requirement? ... as in removing the power supply and
running the equipment off battery power. The 9.6 vdc is still
required but at how much current? Anyone know the
Let Me tell You youngsters out here How bad Memory loss is , as Some of us
get older I could swear that on this group or one I use Someone Posted a
File about KEYS But for the life of Me I cannot find it , It listed
Everything .
And I have searched for 2 hours trying to help but did not
I hear you , at 72 I am still working for Motorola and am glad the old memory
is still intact at present
_
Hotmail: Powerful Free email with security by Microsoft.
Well As a verteran employee of motorola to this very day, We have MOT1 locks in
repeater and transmitter cabinets, but YES 2553 also was in many relic systems
Raymond P. Kalbfeld
16850 Collins Avenue Suite 112-463
Sunny Isles Beach, Florida 33160
Cell 786-267-7555
Office
In a mobile, that would depend on what's in the drawer unit. The RF preamp, PL
encoder, and PL decoder board draw power from the 9.6 volt line. Other options
may as well. If memory serves, and I wouldn't recommend you take this to the
bank, Motorola specified a maximum current draw of 1.2 amps
This is what you saw - and this is what you are looking for:
http://www.repeater-builder.com/keyspage/keyspage-index.html
Bill Hudson
W6CBS
Ex-Motorola 1983
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of ka9qjg
Sent:
Try http://www.accrepairs.com
This is the web site for ACC Paul who does all the ACC upgrades, repairs, etc.
He is very quick to answer any questions you might have also.
Roger
WA1NVC
--- In Repeater-Builder@yahoogroups.com, DCFluX dcf...@... wrote:
Don't know who you talked to over there
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