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Re: GE phen.programable radios/info

D.J.H.
 

I'am getting alot of email with out any message body,only the subject
line??
Doug VE6ZH.

----------

From: Kevin K. Custer W3KKC <kuggie@...>
To: repeater-builder@...
Subject: [repeater-builder] Re: GE phen.programable radios/info
Date: Monday, February 15, 1999 7:47 PM


Re: Advice

Kevin K. Custer W3KKC
 

Jeff, My thoughts are threaded below:

JHowel@... wrote:

From: JHowel@...

Greetings to the list,

I am just beginning to embark on a 2-meter repeater-building project, and
could use some advice. I need to keep out-of-pocket expenses minimal, and use
as much of what components I have on hand as possible.

I have several Mocom 70's, which I've been told are easy to tune but you have
to use two to make a repeater. I've found someone who has a manual, so I'll
have that within a week or two. I also have two GE Master Pro's that I've
also been told can be made into repeaters without much trouble.
Are the Mastr Pro's mobiles? If so the receivers are very good, but it's hard to
get the HV whine out of the transmitters audio. If they are stations running off
of a station supply, there is no problem.

As it stands right now, my options are leaning toward using two Mocom 70's
with a basic controller. Bells and whistles can come later -- most important
thing is to get the thing built and hopefully on the air when the weather
warms up enough to do the antenna work -- which is another thing: I need to
find a site for the repeater.

Any suggestions will be appreciated; thanks in advance.

73,
Jeff, W9SAR

The two M'70's should work fine. Micor's are really cheap right now since the
trend (even in ham radio) is turning toward using Mitrek's and Syntors (yes you
can make a repeater from a Syntor.)

I suggest a Micro Computer Concepts RC-100 (or RC-1000 if patch is necessary) they
are cheap and work fine. If you are into soldering things together to save money,
try the NHRC 4, I have one of these and it is great for the $75 I have in it.

A cheap repeater antenna is the Hustler G7-144 for 2M. Don't use a Cushcraft
antenna on your repeater like the ringo, or ranger. They have no decoupling of the
feedline and their pattern is horrible. The rf spewing from it will cause you (and
others) grief.

I like the WACOM duplexers. I have several sets for 2M and UHF and they really
work nicely.

Kevin


Re: GE phen.programable radios/info

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
&nbsp;
<p>"D.J.H." wrote:
<blockquote TYPE=CITE>From: "D.J.H." <ve6zh@...>
<p>Hello.I'am new to this list.My call is VE6ZH,name is Doug,have been
<br>building repeaters for about 12 years.Have 3 on the air ge royal
<br>ex.147.210+&nbsp; ge royal ex.146.700- and a motorola micor from mobile
service
<br>on 448.975-
<br>&nbsp;&nbsp;&nbsp;&nbsp; Dose anyone have info on how to program a
UHF GE. Phoenix to use as a
<br>link radio???
<br>&nbsp; 73 Doug
<br>&nbsp;</blockquote>
Doug,
<p>Sorry I can't help with the programming of the GE.
<p>I have a question though, what information did you use to convert the
uhf Micor to repeater?
<p>Kevin
<br>&nbsp;
<br>&nbsp;</html>


Re: 222MHZ Micor repeater

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>

<blockquote TYPE=CITE>Fred,
<br>Which model 4 pin exciter do you have?
<br>Kevin >>
<p>The exciter is a TLD5322B and the channel element is a KXN1018C....
by the way
<br>i can only get 2kc deviation out of the exciter, does anybody know
which
<br>capacitor i have to change in the element?
<p>Thanks
<p>Fred
<br>&nbsp;</blockquote>
Well, I have no experience with that exciter. I use the TLD 8732A
<p>As far as the deviation goes, you should not have to change anything
in the element because of deviation. If you are able to net the crystal
on frequency, you should be able to get MORE deviation from the exciter
now that it is on 220. Why? The crystal oscillator has been multiplied
more times (18 instead of 12.) 417 cycles of deviation at the oscillator
is necessary to make 5 kc. deviation at the output on high band (2 meters)
the same oscillator deviation (417 cycles) should net 7.5 kc. deviation
on 222 mc. You should have more than enough deviation on 222.
<p>Sounds to me like there is a problem with the buffer amp (Q404) or first
tripler (Q405.)
<p>Do you have the schematic, and trouble shooting procedure? It should
still apply.
<br>Does each stage tune at a precise peak? How about the tuning slugs,
are they all the way into the sleeve or way out?
<p>Did you put any caps on the channel element to net it on frequency?
If you did you may have taken away the ability to deviate the oscillator.
<p>If you cannot get this transmitter to work, I can send you a TLD 5382A
style exciter and channel element.
<p>Kevin
<br>&nbsp;
<br>&nbsp;</html>


GE phen.programable radios/info

D.J.H.
 

Hello.I'am new to this list.My call is VE6ZH,name is Doug,have been
building repeaters for about 12 years.Have 3 on the air ge royal
ex.147.210+ ge royal ex.146.700- and a motorola micor from mobile service
on 448.975-
Dose anyone have info on how to program a UHF GE. Phoenix to use as a
link radio???
73 Doug

----------


Re: 222MHZ Micor repeater

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
&nbsp;
<p>NE2E@... wrote:
<blockquote TYPE=CITE>From: NE2E@...
<p>Hello All..
<br>Did anybody ever modify a vhf 160mhz micor base station for 220mhz???
the
<br>exciter is a true fm and not phase modulation..
<br>I just did one and i used the mods for a mobile&nbsp; and i only get
around 50MW
<br>out of the exciter on a bird meter, before the mod i was getting 600MW..
<br>The mobile exciter i believe its a little different, has some different
<br>components in the rf section&nbsp; not just in the phase modulation
circuit..
<br>Any body has mods for the vhf base/repeater exciter????
<p>Thanks
<p>Fred</blockquote>
Fred,
<p>Which model 4 pin exciter do you have?
<p>Kevin</html>


Re: [Fwd: Micor Repeater]

Brent DeSalvo KF4TNP
 

i want to piggy back a link radio on RB port
i am using a UHF Ge Century II on my remoter base
and what it is is that i want another radio back to back with it but
with a aux. port to switch the cos or the audio any ideas using the
RC-1000V controller

Brent DeSalvo (KF4TNP)
146.625- 442.100+
Lewisburg, Tennessee

Do not forget to Confirm your visit! Thanx.


Re: [Fwd: Micor Repeater]

Kevin K. Custer W3KKC
 

[This message contained attachments]


[Fwd: Micor Repeater]

Kevin K. Custer W3KKC
 

[This message contained attachments]


another test

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
test</html>


another test

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
test</html>


Re: Another test

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
test</html>


Another test

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
&nbsp;
<br>TEST TEST
<p>I am testing the message trailer
<p>Kevin</html>


Re: Micor Backplane

Richard D. Reese
 

"Kevin K. Custer W3KKC" wrote:

From: "Kevin K. Custer W3KKC"

"Kevin K. Custer W3KKC" wrote:

From: "Kevin K. Custer W3KKC"
<kuggie@...>

Tracy,

I am replying directly and also reflecting the
message on the new list.
If anyone wants to reply to Tracy, please send
plain text directly to his email
address as I am uncertain of his email
receiving ability. Also, please CC the list
so others can see your reply.
.............................
snip....................................
If you have trouble cross referencing the
modification to the non uni chassis
email again and I will take the time to do it.
Oh well........I forgot (already) you have no
manual.
The part number for the manual I have is
68P06901J94 and was written for the PA State
Police Base Stations.

If someone knows of a more generic number for
the manual that coincides with the Micor non
unified station please reply.
------------------------------------------------------------------------
To unsubscribe from this mailing list, or to
change your subscription to digest, go to the
ONElist web site, at and
select the User Center link from the menu bar on
the left.
------------------------------------------------------------------------
The Repeater Builder's remailer. Sponsored by
"RBTIP"
The two non-unified chassis I am familiar with are
the TCN1107A & TCN1125A. The 1107 is 1 or 2
frequency and the 1125 is 4 frequency. Let me
know which one you have and I can san the
interconnect chart and post it to my site for you
later tonight or Tuesday.

--
Richard D. Reese WA8DBW
224.320, 444.200, 920.000, 2411.200 MHz
Voice 330-335-0122


Re: Advice

 

<snipped for brevity>

Kevin,

Thanks for all the info. The Mastr Pro's are mobiles. I really don't see me
using those for the repeater. As I said, I think my best bet as things stand
right now is to use the Mocom's.

As for a controller, I'm looking at the NHRC mainly due to price, at least to
start. Not sure If I'll tackle the kit form or the assembled/tested (most
likely the latter) but I'm almost certain I'll go with one of these.

Thanks for the antenna suggestions. I'm going to try to go with seperate
antennas to avoid the $$$ of duplexers, but this will depend a lot on the
antenna structure. For example, if I have to go with a water tower, I'll need
to use a single antenna. But if I have vertical tower space, I'll be able to
go with two antennas. One question though: what are your thoughts on the
number of cavities in the duplexer? For example, a 6-cavity vs. a 3-cavity?
I know the 6 will cost more and provide more isolation, but at what point
would I need to decide which one?

Again, thanks!

73,
Jeff, W9SAR


Re: Micor Backplane

Kevin K. Custer W3KKC
 

<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
&nbsp;
<p>"Kevin K. Custer W3KKC" wrote:
<blockquote TYPE=CITE>From: "Kevin K. Custer W3KKC" <kuggie@...>
<p>Tracy,
<p>I am replying directly and also reflecting the message on the new list.
<br>If anyone wants to reply to Tracy, please send plain text directly
to his email
<br>address as I am uncertain of his email receiving ability. Also, please
CC the list
<br>so others can see your reply.
<br>..............................snip....................................
<br>If you have trouble cross referencing the modification to the non uni
chassis
<br>email again and I will take the time to do it.</blockquote>
Oh well........I forgot (already) you have no manual.
<br>The part number for the manual I have is 68P06901J94&nbsp; and was
written for the PA State Police Base Stations.
<p>If someone knows of a more generic number for the manual that coincides
with the Micor non unified station please reply.</html>


Re: Micor Backplane

Kevin K. Custer W3KKC
 

Tracy,

I am replying directly and also reflecting the message on the new list.
If anyone wants to reply to Tracy, please send plain text directly to his email
address as I am uncertain of his email receiving ability. Also, please CC the list
so others can see your reply.

To bring the rest of you up to date, here is the original mailing from him, and
then my reply.

Kevin,

I see you have a lot of knowledge on Micor's and wonder if you
could help me?

Do you know of anywhere one might be able to obtain a manual which
explains the 'card controller rack' and backplane logic? Which manual #
this is? I've got a vhf micor mobile manual which appears to take care of the
receiver, exciter and pa questions... But the card rack is still a mystery.
Any help would be greatly appreciated.

Thanks,

Tracy,
K0DOE

Tracy,

Does the backplane board have a model # on it anywhere?
How about the cabinet? any numbers will help determine this.
Is it a Unified Chassis or does it have a big 50 conductor ribbon
cable connecting the backplane to the rx and tx, (non unified)?

The model # for the Control & Applications manual MAY be
68P81025E60-C

Don't let the card rack and backplane intimidate you. For all
practical purposes (in ham use) it can be bypassed.
What cards are installed into the rack?

Kevin
This next part I just received and I am replying to him and the list.
My reply is threaded below.

Acsdsupt@... wrote:

The model # is scratched out from moving it. It does have a big 50 conductor
ribbon cable (mylar) connecting the backplane to the rx and tx!
You have a "non-unified" chassis.

I got the receiver to tune up however, not quite to the sensitivity that I am
accustomed with GE! Only blows about .5 Microvolts @ 12 dB SINAD. I'd heard
that one needs to add length to the bolts in the helical in order to get them
to tune all the way down? Do you know if this is true?
I have a different solution to this problem. My solution does not compromise the
front end selectivity like when using longer tuning screws. Go to
and
for explanation of this solution. Also
the coils are now on sale from me if you choose to purchase them.

The exciter tuned up too. Although I had to dive into the schematics for a while
to figure out where to "test" the test points since I don't have a service box.
I just used a digital vom instead.
A simple 50 uA meter works fine.

Seems to work. But I can't get the crystal tune on frequency. It's high! The
crystal (147.165 MHz) will only
warp down to 147.166.4. I'm going to try sticking a 1-20 pF cap in parallel with
the varicap and see if I can get more range. (BTW, Didn't work in parallel with
the varicap but tried this with a 1 pF across the bottom of the
crystal and it worked! Right on frequency! Hot Darn!)
Your exciter must use elements with 4 pins, Correct? The 3 pin model (with K 1007A
element) is standard and does not have a modulator in it. This model utilizes
phase modulation. The 4 pin model (with KXN 1019 element) was originally designed
to transmit DPL (digital private line) and was a true fm exciter. I don't know why
the cap across the varactor did not work.

Lastly, this thing was configured as a remote base for a business. It has a
Squelch Gate Card, Line Driver Card, DC Transfer Card, Station Control Card
and TOT Card. Don't have a clue what some of these do except for the obvious.
Can't seem to get it to repeat with opening the squelch. Something is muting
the receiver when I push to manual tx key on the Station Card. So close but
yet so far! Any ideas?

Thanks!

Tracy
Yea, lots of ideas....

Are you going to use an outboard controller with this station? If so refer to

for information. If not, refer to and
ignore the rest.
On the first conversion, since your station is a NON UNI chassis, some things are
going to need to be translated. Read the information and try to understand the
CONCEPT, don't try to convert yours using the information. Basically to keep the
receiver from muting and to eliminate the need for the line driver card. Pull the
line driver card out. Then, on the Remote Control Chassis, (the chassis where the
cards go in) jump pin 15 to 39 (where the 50 pin ribbon is attached). This allows
the preamp audio from the receiver audio and squelch board to be fed into the
volume control to provide amplified receiver audio to drive a local speaker with
no muting action. My personal notes also show modification to the Audio & Squelch
board. My notes show to cut off the trace leading to IC 202 pin 14. Also cut trace
leading from the intersection of IC 202 pin 13 and C235 (a .22 uF) and the long
pins leading to the outside world. If anything is allowed to input to pin 13 on
the A&S board (except for having the .22 uF cap connected) will totally mess up
the action of this board.

Bottom line is to eliminate as many of the cards as possible. I do not care for
the way the Squelch Gate card manages the squelch action, or anything else it does
(I eliminate it because I use external controllers) . This concept is outlined in
the Station Modification listed above.

If you have trouble cross referencing the modification to the non uni chassis
email again and I will take the time to do it.


Hope this helps,
Kevin


Advice

 

Greetings to the list,

I am just beginning to embark on a 2-meter repeater-building project, and
could use some advice. I need to keep out-of-pocket expenses minimal, and use
as much of what components I have on hand as possible.

I have several Mocom 70's, which I've been told are easy to tune but you have
to use two to make a repeater. I've found someone who has a manual, so I'll
have that within a week or two. I also have two GE Master Pro's that I've
also been told can be made into repeaters without much trouble.

As it stands right now, my options are leaning toward using two Mocom 70's
with a basic controller. Bells and whistles can come later -- most important
thing is to get the thing built and hopefully on the air when the weather
warms up enough to do the antenna work -- which is another thing: I need to
find a site for the repeater.

Any suggestions will be appreciated; thanks in advance.

73,
Jeff, W9SAR


Repeater UHF

Brent DeSalvo KF4TNP
 

looking for a Repeater to set up on 461.900tx and 466.900rx with pl of
192.8 enc/dec
i have the duplexer and pa all that goo stuff looking for a rx with pre
amp and a transmitter anybody have one for sale ?

--
Brent DeSalvo (KF4TNP)
146.625- 442.100+
Lewisburg, Tennessee

Do not forget to Confirm your visit! Thanx.


Re: 222MHZ Micor repeater

 

In a message dated 2/15/99 9:08:13 PM Eastern Standard Time, kuggie@...
writes:

<<
Did anybody ever modify a vhf 160mhz micor base station for 220mhz???the
exciter is a true fm and not phase modulation..
I just did one and i used the mods for a mobile&nbsp; and i only getaround
50MW
out of the exciter on a bird meter, before the mod i was getting 600MW..
The mobile exciter i believe its a little different, has some different
components in the rf section&nbsp; not just in the phase modulationcircuit..
Any body has mods for the vhf base/repeater exciter????
Thanks
Fred</blockquote>Fred,
Which model 4 pin exciter do you have?
Kevin >>

The exciter is a TLD5322B and the channel element is a KXN1018C.... by the way
i can only get 2kc deviation out of the exciter, does anybody know which
capacitor i have to change in the element?

Thanks


Fred