which create the tuned network
used in the filter. This can be tamed down (filter made to be flatter
in response) to some degree by placing a 220K resistor across the choke(s).
See Here:
http://www.repeater-builder.com/rbtip/plf.html
Kevin Custer
kilohertz deviation on UHF.
That said, I've seen it not be right.
Someone else mentioned the possibility of audio coupling capacitors that
have aged and lost capacity; and possibly have become leaky. This will
result in off-bias and lack of quality coupling between stages and cards.
Kevin Custer
mzfb2001 wrote:
I was looking in the files section and may have missed it, but I am looking
to improve the transmit audio quality on my UHF transmiter. I've noticed that
the audio is lacking in lows its not tinny but its not what I would call
normal audio from a Micor. The audio levels and
wb6dgn wrote:
HOW THE H*** DOES ONE ADD THE ATTACHMENT TO THE POST. AS USUAL, THIS YAHOO
CRAP IS IMPOSSIBLE TO FIGURE OUT. THERE'S GOT TO BE A BETTER HOST THAN THIS
JOKE!
Test Attachment:
Kevin
Second Try...
Kevin Custer wrote:
wb6dgn
wrote:
HOW THE H*** DOES ONE ADD THE ATTACHMENT TO
THE POST. AS USUAL, THIS YAHOO CRAP IS IMPOSSIBLE TO FIGURE OUT.
THERE'S GOT TO BE A BETTER HOST THAN THIS JOKE!
Test Attachment:
Kevin
Kevin Custer wrote:
Second Try...
This list was originally set up to accept and pass attachments.
Somehow, that function was changed to strip the attachments and keep
them on the Yahoo Site.
The mode has been changed back to the original configuration. Please
use it wisely. Those
Butch Kanvick wrote:
Dear friend,
Measures have been taken so this won't happen again - from this member.
Kevin Custer
List Owner
lcameron...@northlink.co.za
remove me from your mailing list please
Ok - since you asked nicely
You have been removed.
Kevin Custer
John Transue wrote:
Our club recently added a remote receiver and RF link to our club
repeater. We are using an ACC RC-850 controller at the repeater site.
We added an LDG RVS-8 voter .snip.
So my question is, Is there any way something external to the voter
could cause the voter
John Transue wrote:
Kevin,
Each of the eight audio inputs to the voter is protected from DC by a
condenser. The audio out is also protected by a condenser. The audio
input to the RC-850 controller is also AC coupled.
John
Have you looked with an oscilloscope to see if there is anything else
Coleman Station Road
Friedens PA 15541
Please don't reply to this message on the list(s).
Personal comments or questions are always welcomed.
Thank you in advance,
Kevin Custer W3KKC
kug...@kuggie.com
( kuggie at kuggie dot com )
is the MICOR squelch many try to
replicate. If anyone that is interested in this subject would like to
learn more about the what the Motorola engineers take on it was, I
suggest you get a copy of a MICOR manual and read the theory.
Kevin Custer
mwbese...@cox.net wrote:
Thanks for that explanation... you're spot-on with your observation
about how difficult it is to understand spoken-word chopped up Kendecom
style! My system is on VHF, but exhibits exactly the behavior you
describe and it's very difficult if not impossible to make any
mwbese...@cox.net wrote:
Mike,
On the Kendecom receiver, there is a discriminator output available.
I don't have a manual handy to tell you the exact location on the
board - sorry. Connect the MICOR squelch boards input to this pin,
supply it with power, and use the logic output to drive
. It was replaced about 7 years
ago with a 30 year old MICOR.
Kevin Custer
, the
microprocessor knock-offs that are available are not equivalents, none
the less superior to the original analog design.
Kevin Custer
Skipp does have a really good point... I worked pretty hard to
incorporate a micor chip onto a circuit board with an MX Com (whatever
they are now) CTCSS chip
Why don't you call the factory! They are very helpful if you don't
keep them on the phone too long.
The repeater was back to the factory more times than I care to mention.
The overload problem was reported every time it went back and it always
returned working the same way - not fixed.
own.
Here are some links:
http://www.link-comm.com/lpage.php?cid=2
http://www.repeater-builder.com/micor/micor-bi-level-squelch-theory.html
http://www.repeater-builder.com/temp/micor-bilevel.gif
Good luck!
Kevin Custer
anybody got any suggestions about fixing the squelch circuit? (Spare
me
Jed Barton wrote:
Hey guys,
I'm working with a group and have given them several suggestions for
repeaters on 220 including hipro, ge, moto, etc.
One thing i don't know much about is the kendecom, and thought i would ask
since they want to know.
As far as relyability, good, bad?
Kendecom
tahrens301 wrote:
Hi Folks,
I picked up a bunch of Micor repeaters today,
and as I figured, they have the TLD xxx4
receiver in them. (160-174mhz).
I know that to put on 2 meters, new resonators
some other stuff is required, but is it
necessary if I go down to 154?
Yes, the
K5IN wrote:
Kevin,
Any suggestions for a decent quality 220mhz amp for repeater duty?
Micor 20-25 watts drive or pull the PA and exciter in and 50-60 watts output?
For 50 watts, we use two Japanese power modules and Wilkinson power
dividers for splitting and combining. We build an IPA
Kevin Custer wrote:
it's a one transistor buffer that puts out about 1 watt but _it's_ output is variable
Yea... _its_ out is variable - not _it is_ output is variable...
Long Day!
Kevin
MHz and achieve book
specification sensitivity on the new band. My favorite is the MICOR.
Hope this helps...
Kevin Custer
It is a custom chip, manufactured to our specifications.
Kevin Custer
la4pma wrote:
Hi
What type of cap. filter IC is used in AP-50 audio processor?
Regards
LA4PMA
the transmitter will be spurious.
Hope this helps...
Kevin Custer
for an inexpensive solution that still is a quality product. Nothing
to fancy is required.
What are people using for similar set ups?
Personal favorites for similar situations - no order of preference:
Arcom RC-210
NHRC-4
Kevin Custer
/bird43sampler.html
These samplers are available from RF Parts at $100.00 plus shipping -
you save over 50%.
Email me directly if interested in placing an order.
kuggieatkuggie dot com
Thanks,
Kevin Custer - List Owner
you a valuable resource. I was showing the side to the other
extreme. We don't know where this dude lives, but if it is where snow
and ice occurs, your suggestion is much more likely to continue to allow
desense-less operation when things are less than perfect.
Kevin Custer
the
system and isolation in reserve will allow the repeater to operate
without desense until the reserve is used up.
Kevin Custer
a WACOM WP-641, should give plenty of isolation...
Kevin Custer
My CommShop calculates 99.65 dB is required. I'd definitely be looking at a
six-cavity BpBr duplexer for this station.
73, Eric Lemmon WB6FLY
---
Hope someone
- with the option to
purchase two more cans and the appropriate jumpers at a discount for
upgrading it to a six-cavity duplexer.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kevin Custer
Sent: Saturday, August
repeater using one feedline, but, getting the
preamp as close to the antenna as possible (without destroying it)
allows us to take advantage of better S/N ration to the first active
device - making the system noise figure better.
Kevin Custer
Nick W7NIK wrote:
I did only the one mod which was .
9.6v to a 10k resistor to the base, emitter went to ground, collector
to the controller. This mod was on the better duplexing for a micor
station on repeater builder site.
That part of the modification is not intended to drive a
Paul Plack wrote:
If you mount the array on a non-conductive pole, won't you then have
to model the effects of interaction with the outside of the coax
shields of the feedline harness that would normally be insignificant
when attached to the side of a conductive pole?
Be careful here
that uses a dipole
array with the dipoles faced into the tower. It has amazing
omni-directional range.
Kevin Custer
MCH wrote:
I'm sure someone on *this* list will be able to correct me if I'm wrong,
but I think you can mount virtually any of the dipole type antennas on
the tower leg as long
David Struebel wrote:
Anyone have tuning instructions for a Wacom WP-652 220 Mhz duplexer?
Dave WB2FTX
http://www.repeater-builder.com/antenna/ant-sys-index.html
Scroll down to the Wacom section...
Kevin Custer
I should have also mentioned that even though the WP-652 is not listed
- it tunes the same as the WP-641, with the obvious difference in TX to
RX spacing.
So, the tuning instructions for the other WP-xyz series can also be used
to tune the WP-652.
Sorry for any confusion.
Kevin Custer
as well.
Go away. END OF THREAD!
Kevin Custer - List Owner
Doug Zastrow wrote:
Has the IFR page on the rb website been taken off?
No, it has been revamped recently. Mike will likely reply with the link
to the new index when it's ready.
Kevin
n...@no6b.com wrote:
Not the problem. Acrobat 5 is as far as my home system
goes. Unfortunately the full version of Acrobat overrides any Reader
installation. Not Windows' fault, but Adobe's.
I do have a 1 GHz PIII backup system I could put the new reader on if I was
desperate, but not
I'm not sure if Yahoo is blurting out old messages of if someone had
brought this old OT post up again, but, since nothing good has come of
this topic lately, please LET IT GO.
Kevin Custer
List Owner
. If they are
having only a little trouble, you might see some lost after a few
hundred. If you have basic packet loss, the provider need to be
notified and given the opportunity to resolve. If they fail to resolve,
you have a choice.
Good luck, and let us know how you make out.
Kevin Custer
List Owner
the bottlenecks. You didn't even know they
existed when you were on dial-up
I'm not saying Comcast doesn't have their problems, but with multi-meg
Internet connections available to the average consumer, you are going to
see the weaker links; and it doesn't matter who your provider is.
Kevin Custer
Eric,
I don't believe you understood what Scott said. We have sent many many
elements in for Temperature Compensation, and indeed see components
changed. While we certainly don't open them all to check, I cannot
recall of one instance of opening one up that was sent in that didn't
have
Paul Plack wrote:
Kevin, thanks for your insight. Comcast must cap speeds below what it
advertises intentionally, because even distant speed test servers
would run higher speeds than what I could get to fellow Comcast users
in the same part of town.
WAN traffic is indeed limited so the
to everyone.
Kevin Custer
List Owner
Ralph,
Okay, I mis-understood. I thought the repeater that you are working on
was at your son's place.
Let me know when you want to get started and I'll try to walk you through.
Oh - one question, is it a Unified or Non Unified Chassis?
Kevin
Hi Kevin
This repeater I am working on is here
Ralph S. Turk wrote:
Kevin
Unified Chassis meaning TX on top
Control Shelf and Rx etc on bottom.
Most chassis' were set-up this way, so please read on - and answer again.
A Unified Chassis is a chassis that _is not_ made up of separate
rack-mounted units. The Non Unified Chassis is exactly
Ralph S. Turk wrote:
Hi Kevin and all
Looks like I found the problems.
Good. That was easy on my part... grin
Where do you pull the disc off for an external Squelch controller and
control system I have been using pin 15 of the RX connector on the
main board.
Pin 3 of the Audio Squelch
.
This has nothing to do with whether or not the MICOR's were originally
built for repeater duty or not. It's a mix that is happening in the
repeater PA's.
Kevin Custer
Ralph,
Do you have available an oscilloscope? If so, I'll try to walk you
through the station an resolve the issue.
Kevin Custer
Hi all.
I am working on a Micor repeater (not Mobile) and I am having problems
with the Squelch and Audio circuits. Actual original usage of the
Micor
Ralph,
Sounds good. I'll try to be available when you get the equipment to
your son.
Kevin
Hi Kevin
Yes I do. I built one micor repeater with no trouble last
summer. Worked like a charm. The only problem it is located in
Montana with my son, N7XVF where I can't get to it to make any
on any reasonable frequency. There are some
articles on my website that address this. Go to the Antenna Index to
see them.
Kevin Custer
Well what would be a good choice? Just saying its bad is really useless
information.
Trevor
I plan on using LMR-400 as I have it readily available
in doubt, Google is your friend...
I Googled power-save 1200 scam
It revealed exactly what Gary said:
http://www.bargaineering.com/articles/power-save-1200-recapture-your-electricity-line-loss.html
Kevin Custer
List Owner
the meter takes a while to recalculate Smoke - Mirrors...
So, you pay $300 (plus installation) to benefit the power company;
which you get nothing in return, other than it possibly costing YOU more
money on your electric bill.
Kevin Custer
List Owner
Gary Schafer wrote:
Kevin,
I think that you meant the amperage to the load (a motor) is UNCHANGED
with and without the device.
I wasn't very clear
What I meant was the amperage to the load from the first ammeter is
changed by the presence the unit. Of course, the amperage to the load
Eric,
Please consider taking a few high quality pictures and submit this (as
an article) to RB for publishing.
Kevin Custer
I did a little further digging with the RC96, and discovered the
following...
The SELECT 1 line which controls the CD4053 (U9)RX audio gate control
pin behaves
-coilinstructions.html
The Holiday Special is going to remain in effect for some time.
Kevin Custer
I have built many MVP repeaters using the NHRC MVP controller. I always
test the repeater with full output power. I have never witnessed any in
cabinet desense with any MVP conversion I have done, no matter VHF at .6
MHz or UHF at 5 MHz separation. Now, I wouldn't recommend running them
you used inferior cable?
Bad engineering practicesIMHO
If a preamp is justified to recover loses from inferior cable, hardline
is justified.
Kevin Custer
List Owner
expect.
Kevin Custer
larryjspamme...@teleport.com wrote:
What I need, as I mentioned in the listing is a special 8-watt driver board
for the big 330-watt upright base station, in the 25-30 or 30-36 MHz range.
Some of the parts for this board are not used in the mobile radios.
Why not remove stages from a higher
(to some folks).
In the time it'll take you to respond to this email, you could have had
one of those from your pile sawed in half.
My suggestion was merely to attempt to save you time and money.
(receding back to my trenches)
Kevin Custer
n...@no6b.com wrote:
20*log(N) dB, where N is the multiplication factor. So for x 12, the phase
noise would be 21.6 dB higher than that of the xtal oscillator.
That must be why the GE charts show about 22 dB of difference. Makes
sense.
For x 36
(UHF exciter), it's 31.1 dB.
Larry wrote:
Hello group,
I'm moving a Mastr ll to down to 146 MHz range for Ham use.
I'm in need of a 19B226748G1 (138-155 MHz) bandpass filter board for a
GE PLL exciter. The filter currently installed is a 19B226748G2 which
shows it's for the (148-174 MHz) range.
Would anyone on the
/GE_Isolation_Curves.pdf
Hope this helps...
Kevin Custer
ve1ii wrote:
I am making the various modifications to a VHF MICOR repeater to be
used as a 2 Meter repeater.
Assuming that a base station audio squelch module has been modified
per Kevin's notes and also a mobile audio squelch module has been
modified according to his relative notes, how do
Know Chip well, see him every year at the Cactus Meetings. Great preamp
but cost $110. Would be nice to find a 10-15 db easy to make preamp for
440mhz.
http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=actionkey=PR-SERIES
Great for sites that don't require pre-selection ahead
for the option. I don't know what the GaAs
device was, as I never had to replace one.
Kevin Custer
John Sichert wrote:
The best unit as far as sensitivity goes, seems to be the Channel
Master CM-7000.
Has this unit been tested side by side against the Magnavox TB100 and
its variants?
If so, how much better is the CM-7000?
Kevin
in the subject line. My rules state
that OT posts are allowed as long as they are plainly marked Off Topic,
which they are.
Liberal use of the delete key will solve your issue.
Regards,
Kevin Custer - List Owner
neal Newman wrote:
Kevin you have a number where we can Chat?
Replied directly
Kevin
conversions for the small catv
systems I take care of. We also like the Magnavox unit over the RCA;
both available at our local Wal-Mart. The Magnavox will resolve with
lower signal level without tiling or saying the signal is too low.
Kevin Custer
John Transue wrote:
Kevin,
Is the list off line? I have not received any RB messages all day.
No, just an unusually slow day.
Kevin
Decibel (1/10 of a Bel, of course)
DB was absorbed by RFS some time ago:
http://www.rfsworld.com/
Kevin Custer
Brian K. Gaskamp wrote:
Hello all, maybe I'm misspelling the name of the company but I can't seem to
find the company who makes the Decibal Products type of antennas
JOHN MACKEY wrote:
I've had it. I am DEMANDING that the local TV channel 2 STOP transmitting or
change to a different frequency to end the interference they are causing my 6
meter repeater. I am giving them 6 weeks notice to either stop transmitting
or change frequency, and I have picked a
JOHN MACKEY wrote:
A good web site to get information on the digital switch over is
www.tvfool.com
Yup...
I have been using the data available there for several weeks now. I had
trouble getting some of the files at first, but finally got a good
torrent client running and all is well. Great
the action of the MICOR squelch with circuitry that doesn't
include a micro-processor.
Kevin Custer
Jordan,
The RLC-MOT works very well since it is an exact copy of the squelch circuit
found in the Micor. The only problem is it is now VERY expensive.
Kevin had done some extensive testing
Tom Manning wrote:
GOOD AFTERNOON kEVIN
This last response is my thinking about the Mitrek and is why I
asked the question earlier. If the Mitrek coils are the same as the
Micor coils what factor would prohibit this being done.
The coils are not the same, but I believe there is no
n...@no6b.com wrote:
One reason why I've dismissed using any switching on my 110 V cooling fans
let them spin 24/7.
I have used 220 V muffin fans on 110 V and they last for years. I put
one in service in 1997, and it's still turning.
Kevin
an insulating washer. While you don't
need to remove the transistors for remounting the assembly into the
station, you should be careful with it as not to scratch this coating
off when handling it.
Kevin Custer
Eric Lemmon wrote:
Only one of the five front-end coils for a Range 1 VHF Mitrek (HLD4081,
136-146 MHz) is still available from Motorola Parts. That one is part
2480032A07, the violet coil in L1, for $ 4.15.
The only option may be to tack on some extra wire to the existing coils.
Although
Hi Eric,
Kevin,
Other than being physically smaller, I don't know of any helical resonator
design issues that preclude your Micor mod from being adapted to the Mitrek.
Oh okay good - - I was unsure if there was something I was
missing; which could easily be the case.
Thanks,
Kevin
probably a half dozen Micor receiver coils proscured from
Motorola in the past 20 or so years. Thanks. 73 de Tom Manning, AF4UG
- Original Message -
*From:* Kevin Custer mailto:kug...@kuggie.com
*To:* Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder@yahoogroups.com
for my question
about the Micor coils working for Mitrek. Thanks. 73 de Tom Manning,
AF4UG
- Original Message -
*From:* Kevin Custer mailto:kug...@kuggie.com
*To:* Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder@yahoogroups.com
*Sent:* Tuesday, December 16
Joe wrote:
I tried to download a copy of the RC96 manual at:
http://www.repeater-builder.com/acc/pdfs/ACC-RC-96-Manual-All.pdf
and it says the file is damaged. Are there any other copies available?
Yes...
http://www.repeater-builder.com/acc/acc-rc-96-manual.zip
Kevin
Tom Manning wrote:
Good morning Kevin
I have a question. Will these coils also work in a Mitrek?
Thanks. 73 de Tom Manning, AF4UG
Hi Tom,
To answer your question, the conversion will not work in the Mitrek.
Unlike the MICOR, the Mitrek high-band unit that is most common has a
lower
to cover
145.49Mhzz, which is our receive freq for our repeater. Thanks. 73
de Tom Manning, AF4UG
- Original Message -
*From:* Kevin Custer mailto:kug...@kuggie.com
*To:* Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder@yahoogroups.com
*Sent:* Tuesday
for more information and current pricing:
http://www.repeater-builder.com/rbtip/hs-coilinstructions.html
This deeply discounted pricing will last for at least 30 days. Email me
with any questions.
Thanks,
Kevin Custer
the next day! grin
We apologize in advance for any inconvenience caused by our work. This
WILL NOT affect the availability of the repeater-builder email list
hosted on YahooGroups.
Regards,
Kevin Custer W3KKC
Scott Zimmerman N3XCC
Scott Zimmerman wrote:
Correct!!
As long as you run your callsign as the SSID and are within 902 to 928, you
can run all the power you want. (up to 1.5kW)
One other thing to keep in mind, you cannot run encryption if you are
operating this Internet link as an Amateur Station.
Bob M. wrote:
I seem to recall a few years ago VHF Engineering asked Repeater-Builder to
remove almost all the manuals posted there. VHF Engineering wanted to be the
sole provider of such information, for whatever reasons they had. Naturally
they don't have ALL the manuals, so a few do
is a bit deaf. Is that observation with the
repeater transmitting or with it disabled? Did you hook up a hand held
or mobile to the repeater antenna and do some simplex testing?
Kevin Custer
Hi Group,
My club has a the never design Station master Pd-220 bought new in
1998. Antenna is top
I agree with Dave, a 3 dB change may be noticeable, but not to the
degree Glenn states.
Kevin Custer
At 06:51 11/15/2008, G Shaw wrote:
Assuming about 80 feet of run at VHF you have added
well over 3 db of loss, which of course means your system is going to be
deaf on rcv and way down
is
wrong.
Kevin Custer
Dave,
The output power of a repeater has relatively little effect on its coverage;
it's how well it receives that is important. A 3dB reduction in the
repeater's received signal strength can be significant, especially if most
of the users are just above the noise level
the FM modulator directly /with the addition of peak limiting
and splatter filtering./
Here are some links:
http://www.repeater-builder.com/products/ap-50.html
http://www.repeater-builder.com/ge/mastrII/ap-50-fm-mastr2.html
Hope this helps...
Kevin Custer
Replied directly
Kevin
Hello -
Who is moderator of Rep-Buildr - I need to reply to that person
directly with email question e.g. need email address
Ed Folta
Com/Rad Inc
No virus
(owner) to resolve the issue.
This means that the problem is NOT solely the responsibility of the
uncoordinated system, but SOME responsibility lies upon the coordinated
system (owner) to help resolve the issue.
Kevin Custer
List Owner
my 'rules' about the OT post, I'll allow it to
continue for now.
Joe M. is one of the most knowledgeable folks on the subject, and we're
glad he takes time from his busy schedule to help with these types of
issues.
Kevin Custer
List Owner
My intention was not to provide a resolution, but to point out the
responsibility of said resolution does not fall solely on the un
dude... So says the FCC rules.
Kevin
True, but what alternative.
Kevin Custer wrote:
MCH wrote:
Coordination is not required, but when one
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