make a stronger power mount :)
ROTFLMAO. Good one Dave
Kevin Custer
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Chris Peterson wrote:
Hi all,
I just tried to call Channel Element Headquarters to get a channel element
for a UHF Micor and I'm told there is just no call for Micor channel
elements anymore. The only reason I wanted one is because I need to change
my repeater frequency and I don't want to have
Brian wrote:
Hi all
As a software and hardware engineer of 20 years and a ham also for over
20 years I would recommend an ICS controller.
And, if Kevin had the time to install the new Single M controller in a
Micor that he asked for you will see a Single M repeater controller
mounted
skipp025 wrote:
Near the burning hot dog tent? :-)
Yum... ahh I meant correct
Kevin Custer [EMAIL PROTECTED] wrote:
I *believe* Repeater Builder will be in our
regular spaces, 707 - 710, in the outside
vending area.
Kevin
Tell the big cheese he is doing just fine. I
At 4/28/2005 04:00 PM, you wrote:
try West Crystals
I have had verry good luck with them
Me too. Only problem has been that just about every xtal I get from them
won't quite tune to freq. with the fixed capacitance installed in my MVP
xtal modules. But at least
They do not Temp Comp, so for UHF, I
wouldn't
Kevin
A 50 C PTC thermistor fixes that.
Guess I need to get to writing an article after Dayton...
Bob NO6B
Yes, Please
Kevin
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mch wrote:
West doesn't? Just for MVPs or for anything?
Nothing... Be very careful with *any* crystal source that tries to
persuade you to send your element/ICOM to them for *compensation*.
I asked West what exactly they did to the element and they finally
admitted to simply netting the
inside it. Some crystals
produce frequency well enough but don't modulate well. Some crystals
will produce an asymmetrical modulation wave while some just won't
produce enough modulation period. Again, you aren't paying the extra
money for nothing.
Kevin Custer
Yahoo! Groups Links
Joe wrote:
Kevin Custer [EMAIL PROTECTED] wrote:
Get one of Skipp's regulator boards...
Skipp's regulator board? I'm not familiar with this.Joe
Skipp? Your Nickel...
Kevin
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Bob Dengler wrote:
I believe ICM Bomar only change these mid-range capacitors.
I have purposely marked the TC caps in several MASTR II ICOM's and MICOR
channel elements before sending them to BOMAR. After they came back,
some units (in particular the GE ICOM's) had every TC capacitor
Kevin Custer wrote:
BTW: What guarantee did West Crystal state after they did their
recrystal and $1.00 'compensation'?
This question was for Rick...
Kevin
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[EMAIL PROTECTED] wrote:
Have an old Astron RS35A supply that I installed their OVP
circuit about a year ago as a safety measure. Been working fine until
now. Normal amp draw 20 amps. OVP circuit now trips easily. Checked
collector solder joints as WW8RR (I think) suggested, they
Mobiles only, as far as we know
Kevin
Q wrote:
Is this true for base stations or only mobiles???
Scott Zimmerman wrote:
In looking at the actual research here at the shop. (I was at home last
night) The actual breakpoint is at 224T100 / 222R500. Any frequency below
this is bad.
is interested, here is the conversion of the Micor
Railroad Mobile to a repeater:
http://www.repeater-builder.com/rbtip/railroad.html
Kevin Custer
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Neil McKie wrote:
Of course you know the history of where the name TPL came from
... don't you?
Ripped from the internet:
To compete with the MOTRAC, GE introduced what many consider to be the
greatest flop in two-way radio history, the GE Transistorized Progress
Line or TPL. GE
Neil McKie wrote:
The original TPL is the earlier General Electric 2-way product
referred to below ... and the first use, as I remember, of the GE
BF-10/BF10A key.
Hope this is at least partially used as cannon fodder for the
Repeater-Builder web site ... somehow ... ;)
It's
Matthew R. Hinman wrote:
If I were to build a home-brew cavity, how would I calculate the
dimensions of the coupling loop? I'm not clear as to how this can be
accomplished. I've seen square loops made from flattened copper
tubing, but I'm not sure how you calculate the size so as to have the
Ralph Hogan wrote:
Dennis,
http://www.qsl.net/w4xe/rpttech/rpttech1.htm
Ralph,
While links in your Mastr Pro pages work, your Micor and Mastr II pages
do not.
They need some HTML assistance To my knowledge, they have never
worked.
Kevin
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Ken Arck wrote:
At 10:25 PM 4/20/2005 -0400, you wrote:
The links within those pages work for you??? How so? They point to files
on his hard drive?
---Maybe you need to clear/refresh your cache? That or, he fixed the
links? They don't point to a local drive at all (anymore?)
Just tried
Brent wrote:
yup dead here also still dont think he fixed them yet
They have been dead for years, I don't think they ever worked...
Kevin
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Kevin Custer wrote:
They have been dead for years, I don't think they ever worked...
The first version of the web archive that works for this page is dated
October of 2003, and the pages didn't work then either.
http://web.archive.org/web/20040416201939/www.qsl.net/w4xe/rpttech/rpttech3
Ken Arck wrote:
At 09:53 PM 4/20/2005 -0400, you wrote:
While links in your Mastr Pro pages work, your Micor and Mastr II pages
do not.
--They work for me :-)
The links within those pages work for you??? How so? They point to
files on his hard drive?
Kevin
skipp025 wrote:
Will someone please Email me Kathy's number at Cook Towers?
Cook's information is always available from the Repeater Builder
website:
http://www.repeater-builder.com/rbtip/supplyindex.html
Cook Towers Inc. (no
web site) - Good distributor of DB, Sinclair, RFS (was
skipp025 wrote:
Will someone please Email me Cathy's number at Cook Towers?
Cook Towers, Inc. now has a website that will be easy to remember:
http://www.repeater-builder.com/cook-towers/
There now
Kevin Custer
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Don Pomplun wrote:
My Mastr II has 4 EC xmit icoms
from 154.6 -
155.5,
and 4 EC rvc from 148 - 155.5
The 5C (in rcv slot #2) is 155.475
Our assigned freqs are 160.695 161.445
Does one order "new" icoms, or do you send a couple of the ECs
in to get re-crystal'd?
What about the 5C? since I
be scrubbed off for better
performance.
It might be necessary to add a cavity (or two) between the duplexer RX
port and the input of the preamp to reduce out of band strong signals.
Kevin Custer
Miguel wrote:
Hello and thanks for reading my post..
Ok,, here is my question, because my instructions
The antenna port of the duplexer? Try again
Mathew Quaife wrote:
Out goes to the receiver and input is going to the antenna port.
Mathew
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Miguel
Sent: Sunday, April 17, 2005 10:06 AM
Best not reply when half asleep, could cost someone a bunch of money
and grief, yes?
Kevin Custer
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cable lengths:
http://www.repeater-builder.com/pdf/wp6xxVHFtuninginstructions.pdf
Page 4 of the document under the obvious heading.
Tee Matchers are also a fix when impedances don't match.
Kevin Custer
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er-builder.com/rbtip/micorsquelch.html
(Ref 5) http://www.link-comm.com/squelch.html
You did ask, so, I Hope this helps...
Kevin Custer
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that away.
That was an excellent write-up that
you did...let's have more of that kind of info on here.
How about posting that essay on
your RB website...?
This is simply opinion, everyone has them, so likely not.
Thanks for the nice words though...
Kevin Custer
Yahoo! Groups Links
To
Likely an EMS mobile repeater...
Not really any better (or easier) to convert to a Ham repeater.
Kevin
Ronny Julian wrote:
VHF Hi band elements are in 156 range. Model # T53RTA1404BA
60W drawer only. I've never seen one like this though. It has a option
installed that looks to be a mobile
Joe wrote:
I was just looking at a Spectrum SCR-77 that I'm working on and it has an
FL-6 preselector on it. It's labelled as a Spectrum product, but looks
exactly like a GLB preselector. Anyone have any docs on this unit?
73, Joe, K1ike
If that is a VHF unit, I can assure you they are
Hi Steve,
While the specifications state that ALC (agc) is used with a range of
about 10 dB plus or minus, it doesn't state anything about compression;
at least not that I read. Is there another module that does
compression?
Kevin
Steve Bosshard wrote:
AE/LZB 119 1878 R1A Audio
T.J. wrote:
I have a question for the group about flipping frequencies around on a
repeater. I think I know the answer, but I want to make sure before I
do or don't do anything. I'm going to swap around the transmit and
receive frequencies on a repeater. What I was wondering was, can I
t;
Could very well be.
At least Times finally affirms there is a problem with LMR, something
that I have claimed for a long time.
Search the archives for more on the subject.
Kevin Custer
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you read this:
http://www.repeater-builder.com/tech-info/audioprocessing.html
Kevin Custer
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Kevin Custer
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My only caution was that *some* duplexers aren't created equal between
sides; therefore switching sides *may* not be possible. Motorola (and
others) made a few mobile duplexers that had more rejection on the
transmitter side, and simply switching them around wouldn't work
satisfactorily.
Will Wright wrote:
The main question is not about what type of coax to use but the length of the
transmission line between the duplexers and the repeater.
May I point you to an archived reply on the subject:
http://www.mail-archive.com/repeater-builder@yahoogroups.com/msg15725.html
Kevin
Dave VanHorn wrote:
I know I could use one of a number of "soft AGC" circuits to control the
incoming audio before it is repeated, but that would not prompt the
offending users to mend their ways. I am working on an audio monitor that
will interject the voice warning "average
Eric Lemmon wrote:
I am working on an audio monitor that will interject the voice warning
average modulation too high when it
detects that overdeviation of the input signal is present. It is not a simple
project!
The first problem (and maybe most difficult to handle) is evaluating a
noisy
the limits of the particular application and its limits.
Kevin Custer
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filtered
off, the more overshoot there will be.
His original complaint doesn't point to a problem in the set-up of the
repeater, it does, however, point to users that are severely clipped.
The fix isn't in the repeater, but rather in the users radios that are
too hot.
Kevin Custer
Yahoo
Steve Bosshard (NU5D) wrote:
On our local EDACS PST clear voice audio from the switch receives ALC and
minor compression before going to the dispatch consoles or being repeated.
How much exactly is the amount of minor comprerssion, 2 to 1 or more?
Kevin
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Jim Knox wrote:
Hi John,
I have LBI 30200F. I will scan it and try to send it to you
Thanks Jim Knox N5NWC
Jim,
If you haven't sent the disk to me yet, place the LBI30200F on it and
I'll upload it as well.
(Jim has been another good source for electronic LBI's for RB)
Thanks Jim,
Kevin
Yes, please.
Kevin
Jim Knox wrote:
Kevin.
I mailed the CD to youMonday, and I e-mailed the LBI 30200 to
John tonight, I will try to send it to you also.Do you want it sent to
[EMAIL PROTECTED],com
Thanks JK
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derek_mcintyre wrote:
I am not sure if anyone else has had this problem, but with these
duplexers I have had a hard time with tuning a pair of cavities with
the stock phasing lines. I seem to be getting double peaks and the
peaks just won't pull together down around 443 MHz. I went and made
for encode and decode. Made
by Parkinson Electronics. in Texas I think
If that is what it is, here is a manual:
http://www.repeater-builder.com/downloads/ParkinsonMVP.pdf
The link can be found under the MVP section of the Mastr Index on RBTIP,
or mastr2.com
Kevin Custer
Yahoo! Groups
://www.kuggie.com/pix/preamp/micor-preamp-3.gif
http://www.kuggie.com/pix/preamp/micor-preamp-4.gif
$75.00 firm, shipped via USPS Priority to any of the 50 United States.
Email directly please kuggie at kuggie dot com
Thanks for looking,
Kevin Custer
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.
Email directly please. kuggie at kuggie dot com
Thanks for looking,
Kevin Custer
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Mike DeWaele wrote:
Ron,
I have one of those exciters. I
believe I have the complete paper work with assembly instructions. I'm
going to shack to find it now. I can scan and forward it to you.
Also Kevin mine says T51 engraved
on board.
Mike,
Please send me the scans and
Dr. Ron Johnson wrote:
Thanks Kevin. Here is a pix. On
the opposite side it says Hamtronics T51 Exciter.
Yup, that truly is a T51. I haven't seen one for over 20 years. I
didn't know they used a SD1115-7 in the final, but I don't remember
everything anymore either.
Hopefully
Mobile or Station (repeater)?
mike wrote:
Hi all
Does anyone know if a dual band antenna for 144/220 is available. .
If so who makes it?
Thanks in advance
Mike
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Chuck Kelsey wrote:
Is that the 6-meter exciter? I've got one of those kicking around somewhere.
I didn't particularly like it, as I recall.
No, its the predecessor to the TA-51, for 2 meters. Note the frequency
on the crystal, in the image he provided...
Kevin
Yahoo! Groups Links
of the manual
Mike did a great job on the T51 manual, and it's now available from
Repeater Builder:
http://www.repeater-builder.com/hamtronics/pdf/T51.pdf
Many thanks goes out to Mike DeWaele, KA2NDW for providing a complete
PDF'ed version of the Hamtronics T51 manual.
Kevin Custer
to pay over $500 for a decent 600 KC split duplexer with
adequate isolation.
Kevin Custer
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Kevin Custer
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ve one I'd consider selling.
Email me off list.
Kevin Custer
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kc4wgh wrote:
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
That would be a MRF901. RF Parts used to carry them.
Kevin Custer
Yahoo
Hi all, I am looking for a transistor that's in a GLB Preselector-
Preamp. This is for the two (2) meter band. Here's the information
(best that I can see) M (batwing) u 901 Thanks in advance
That would be a MRF901. RF Parts used to carry them.
Kevin Custer
Here
ceiver.
I don't have the time to run the numbers, so maybe you could run them
again Eric?
Kevin Custer
Eric Lemmon wrote:
Dennis,
You have classic third-order intermodulation interference. 146.970 times 2
= 293.940 MHz. Subtract the 146.700 signal and you have 293.940 - 146.700
= 147.240 MHz,
applications, go here:
http://www.repeater-builder.com/rbtip/matchingstubs.html
One recommendation though, get plastic jacketed hardline. Bare
aluminum on a galvanized tower is asking for trouble in the duplex
world.
Kevin Custer
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Yea, inherent should have been the word there
Kevin Custer wrote:
Actually, the inherit loss
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and cutting off
all of their UHF connectors and replace them with something else. That
is just plain stupid. If the UHF connector was really that bad, it
would have disappeared long ago.
Kevin Custer
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fraser3914 wrote:
Hi has anyone any software for calculating intermodulation products
that is for free issue,,rgds
Go here:
http://www.repeater-builder.com/rbtip/ant-sys-index.html
Click on Calculators
Kevin
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Station or Mobile?
John wrote:
Hello out there,
Can someone give me the assembly number for a 450-470 Mhz Micor
LLA?? I think I have found one, but want to be sure before sending
my money. Thanks.
73, John, K9KA
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available here:
http://www.repeater-builder.com/rbtip/supplyindex.html#controllers
or here:
http://www.hamrepeater.org/control.cfm
Also, has anyone compiled a list of ham repeater controller models and prices?
Not to my knowledge.
Hope this helps...
Kevin Custer
Yahoo! Groups Links
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' as
well. While the NHRC-10 might be a good choice, I have no personal
experience with it. It's very rare that I don't mention NHRC, but I'm
sure these other guys enjoy a plug now and then too.
Fair enough?
Kevin Custer
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Kendall Stanaland wrote:
Can anyone tell me where to get a pre-amp for a VHF Mastr II?? Thx
Kendall Stanaland-WX5EMT
eBay... Search for mastr
Kevin
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ken_wlter wrote:
I would like to put a repeter up in the Ann Arbor, MI area. What would be a
good way
to start?
By reading this:
http://www.hamrepeater.org/coordina.cfm
Kevin Custer
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If you don't care for Yahoo's New Look, follow this link.
I don't know how much good it will do, but it might be worth the time:
http://www.petitiononline.com/kham2087/petition.html
Kevin Custer
List Owner
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.
Kevin Custer
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[EMAIL PROTECTED] wrote:
Hey Steve,
I 100% agree with this well not the 78 e-mails
I think he is to busy to send that many he just
bought
a radio station and plays with that. I do not
agree with
Russ some times but this vote crap makes my blood
boil! IT IS JUST WRONG!
skipp025 wrote:
Kevin,
Did you delete Russ from the Group or place his posts in moderation status..?
Neither. To my knowledge, Russ is still a member and requires no
moderation activity.
He did say he was going away for the weekend, which might be the reason
he stopped posting, or, who
Someone who gets the list in the Digest Mode said:
Those of us who opt for digests cannot filter or delete
individual posts (or I would have done so long ago to some people's
addresses)
And herein lies the problem of hitting the delete key... It's not the
answer to the problem,
their specs to ours:
http://www.repeater-builder.com/pdf/dbm-to-microvolts.pdf
Comments welcome...
Kevin Custer
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to establish and maintain than new.
I also have bought new repeaters from Kendecom, Spectrum, and others.
I have had much more trouble with them than converted (or not)
commercial gear.
The new is gone the minute you unbox the repeater. (everyone drives a
used car)
Kevin Custer
Yahoo! Groups
skipp025 wrote:
Another surprise is how well the discriminator
circuit of the Maggoire Receiver preforms
(better than some high-end receivers).
What was the basic 12 dB sinad sensitivity of your Maggiore?
If you wanted a local speaker (which is
actually undesired in most cases), you'd
that with Kenwood, Kenwood Systems and
Maggiore you get a two year wan tee.
Also, the topic here is 220 MHz repeaters. Does Kenwood, Motorola,
Midland, and Johnson build 220 MHz. ham repeaters?
If not, it really doesn't matter how damn good their (wan tee) is.
Kevin Custer
Yahoo
://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=296item=5762888962
ebay item = 5762888962
Kevin Custer
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skipp025 wrote:
Kevin Custer [EMAIL PROTECTED] wrote:
What was the basic 12 dB sinad sensitivity of
your Maggiore?
Don't have it exact in memory, but I'll try to
refer back to the log notes and see what I wrote
down.
Thanks I'd appreciate knowing the real world
.
And I have systems running that work across many states, and bigger
than NJ or DE by many times over. All built with 'used' stuff.
http://www.kuggie.com/target/
Kevin Custer
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skipp025 wrote:
Even my remote receiver sites that use
Hamtronics receivers (R144's) have a speaker
jack as I don't use the internal amp for
anything other than the speaker.
Kevin Custer
How and where do you take audio from the
receiver? One of the micor squelch
Brent wrote:
Kevin,
What kind of equipment are you using
for the 145.290 repeater?
RE: 145.290 minus, New Baltimore PA.
This repeater is a Motorola MICOR Railroad Mobile converted to
duplex.
Output power 5 Watts.
Receiver Sensitivity .15 uV. for 12 db SINAD.
skipp025 wrote:
Kevin Custer [EMAIL PROTECTED] wrote:
BTW: I use the factory Hamtronics squelch
for the Remote Receiver sites.
Don't you ever want to "punch the clown"
and change the value of the Hamtronics
Squelch Circuit hysteresis resistor?
I di
Danny wrote:
Hello, I am looking for a 220 machine new or used
You can have both ( a new, used one):
http://www.repeater-builder.com/rbtip/micor220conversion.html
Kevin Custer
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Eric Lemmon wrote:
For those who may not have the Wacom catalog handy, the WP-643 duplexer
comprises six 8 cavities that are rated at 102 dB isolation at 600 kHz
spacing, with 2.2 dB insertion loss. Four of the cavities are BpBr, and two
are
bandpass only. The WP-639 duplexer comprises four
1.5 dB is 29%. Take 150, less 29%, and you get 106.5 watts.
Kevin
w9mwq wrote:
I am curious with a set of TX-RX duplexers at 1.5 insertion loss,
input power of 150 watts, what would be the power output? Need to
know, as I don't think they are tuned correctly, or something might
be wrong
* a WP-641, and that may not be enough unless its a PLL exciter type.
Kevin Custer
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Brent wrote:
Kevin
Thanks I just look back at the meter and I stated 20Watts it was NOT it was 5
watts. with over 5 watts it causes the desense Problem..
Cutting the power can be a double edged sword. While it reduces the
shear power level, cutting the power down too far in Class C
Brent wrote:
On the duplexers the specs state I should have about 1.5 db loss on the TX
port... I just measured the power output into a dummy load. from just the
TX'er. it is set back to 30watts out..
I then hooked the duplexers back up and measured again. I have 12 watts into
the same dummy
, this one being near the top of the list.
In summary, there is nothing wrong with the unit you have. It's just
not as small and pretty as the new ones will be. :)
Kevin Custer
Repeater Builder (the company)
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James wrote:
put me down as a customer
Hi James,
Here is the latest on the AP-50.
http://www.repeater-builder.com/products/ap-50.html
Kevin Custer
Kevin Custer wrote:
Hi All,
You may remember the thread on audio quality a while back. One topic
was a replacement module
(the company) is a subsidiary of Zimmerman Electronics
Kevin Custer - M. Scott Zimmerman
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Your u
my original Sinadder needle type meter, and takes a function
that is basically worthless to pleasant. Of course, adjustments must be
made slower, but I never hurry an alignment anyway.
Kevin Custer
skipp025 wrote:
Thank you Kevin..!
And I thought I was the only one who thought 12 dB
Sinad
kc4wgh wrote:
Which fan would be better on the GE MastrII, and Motorola Micor
mobile radio converted into a repeater; 12vdc or 120vac? Thanks in
advance.
A 240 VAC muffin fan run on 120 VAC is best.
Second best is a 120 VAC.
Third, 12 VDC run from a separate supply.
Fourth, 12 VDC run from
-to-microvolts.pdf
Ref 3 - http://www.ka9fur.net/geduplex/duplex.html
Hope this helps...
Comments welcome, reply to the list.
Kevin Custer W3KKC
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It appears that Eric Homa's (N6NMZ) Amateur Repeater Builders Home
Page is back up and running.
The old web address forwards to a new domain and URL of:
http://www.hamrepeater.org/
Kevin Custer
Yahoo! Groups Links
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), it has been
totally revamped packaging wise (all surface mount). If folks are
interested in the particulars, I will address this in another mailing,
just ask.
Thanks again, Bob.
Kevin Custer
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