@yahoogroups.com, Glenn Little WB4UIV
glennmaill...@... wrote:
Mine will do 5.00, 6.25, 10.00, 12.50, 25.00, 50.00 and 100.00 KHz.
73
Glenn
WB4UIV
At 09:35 PM 8/29/2010, you wrote:
John (et all) -
Is the 1.25M version capable of 20 kHz steps? The spec sheet makes
it look
What is it that these licensed hams do not understand about using
equipment in the ham bands???
You can build your own equipment (remember those days?).
There is NO type acceptance for amateur equipment.
There are limitations as to how much you can build or modify in a
year to cut down on
Mine will do 5.00, 6.25, 10.00, 12.50, 25.00, 50.00 and 100.00 KHz.
73
Glenn
WB4UIV
At 09:35 PM 8/29/2010, you wrote:
John (et all) -
Is the 1.25M version capable of 20 kHz steps? The spec sheet makes
it look like it can only do 12.5 or 25 kHz steps.
- JimF K6IYK
At 8/29/2010 06:06 PM,
I disassembled one for channel 4.
The cavities were about 3 feet in diameter.
I salvaged the plungers for the INVAR rods.
The diplexer was mounted on a huge roll around aluminum frame.
The cavities were connected with 3 inch ridge line.
There were four cavities, two fir video and two for audio.
,
Is it safe to say look in the channel element for the bad cap ?
Tempeture is not a issue with this unit it was in a heated and A/C
garage kept about 65-80 degrees with dehumdifer. I am glad the new
site is climate controlled also.
Ryan n3ssl
--- In Repeater-Builder@yahoogroups.com, Glenn Little WB4UIV
Was the shift a drift or a step jump?
If a step jump, you probably have a bad silver mica capacitor.
73
Glenn
WB4UIV
At 04:23 PM 8/8/2010, you wrote:
Hi Group,
I have a Micor mobile set up as repeater. Worked great and was on
frequency for over 8 years no problems.(lost rpt site May 2010) and
have not looked inside a channel element in
years usally send them out and trust the mfg.
I also gave the crystal movement a thought but was is a temp
controlled enviroment.
Ryan
--- In Repeater-Builder@yahoogroups.com, Glenn Little WB4UIV
glennmaill...@... wrote:
Was the shift a drift
I do not know about Nextel, but, the US DTV signal fits into a 6 MHz bandwidth.
We use a mask filter to ensure that the bandwidth is no more than 6 MHz.
500 kHz from band edge = -47 dB
6 MHz from band edge = -110 dB
73
Glenn
WB4UIV
At 10:58 AM 8/2/2010, you wrote:
On 8/2/2010 10:45 AM, Scott
Does anyone need INVAR rods?
I salvaged some from a TV audio / video RF combiner.
73
Glenn
WB4UIV
I have some tone boards that I no longer need.
Two are Regency 504-046B
Three I think are EF Johnson, they are marked 006B036 with a serial
number after that on a gummed label. These had a daughter board,
which I think, sets the frequency.
I have one unknown board marked PD-085AA with a black
If I remember correctly, Cushman had a box that went in front of
their communications monitors.
This was a small cast metal box with BNC connectors attached.
Inside was a small pigtail fuse between the connectors.
The fuse was rated at 1/32 Amp.
73
Glenn
WB4UIV
At 06:36 PM 3/20/2010, you wrote:
Reverse threaded connectors are used to get a piece of equipment past
FCC type acceptance.
The type acceptance paper work specifies the antenna that is used for
acceptance.
Any other antenna voids the type acceptance.
Since reverse threaded connectors are not available to the general
public,
.
wlan-parts.com
oddcables.com
etc, etc, etc.
-Brian / KF4ZWZ
On Wed, Mar 3, 2010 at 6:11 PM, Glenn Little WB4UIV
glennmaill...@bellsouth.net wrote:
Reverse threaded connectors are used to get a piece of equipment past
FCC type acceptance.
The type acceptance paper work specifies
Do you get the same crackling noise with the duplexer attached to a
dummy load? a ground mounted antenna with different feedline?
73
Glenn
WB4UIV
At 06:12 PM 1/16/2010, you wrote:
I know its been a long time since I first posed the question on what
might be causing the noise we were
This cavity was designed for the UHF aircraft band, 225-400 MHz.
Will it tune to the low end of our 220 MHz band?
Thanks
73
Glenn
WB4UIV
If the preamp has helical resonators on the input, it should not matter.
If the preamp does not have preselection, after the bandpass filter,
unless you like the intermod that will be generated in the preamp.
73
Glenn
WB4UIV
At 10:46 PM 11/25/2009, you wrote:
Hi,
I have now read two different
Locally, years ago, we had a military transmitter that had a
wandering spur. I am near Charleston, SC. The spur was strong enough
to key up amateur radio repeaters in the two meter band from
Wilmington, NC to Savannah, Ga.
The offender turned out to be a 250 Watt base station used to cover
I had a similar problem with a home brew supply.
My fix was a choke (100 uHy)in series with the gate as close to the
gate a possible.
I bypassed the choke on both sides with 0.01 uF capacitors with leads
as short as possible.
This fixed my problem.
You are probably rectifying RF inside the SCR.
, Joe, K1ike
PS; You aren't the Glenn that worked a Glenayre, are you?
Glenn Little WB4UIV wrote:
Desolder the flat gold plated transistor leads.
Clean the black residue at the gold - tin interface.
Resolder the transistor leads after removing any gold left by tinning
the lead and removing
Desolder the flat gold plated transistor leads.
Clean the black residue at the gold - tin interface.
Resolder the transistor leads after removing any gold left by tinning
the lead and removing the solder a few times.
Gold embrittlement is very common.
73
Glenn
WB4UIV
At 10:25 PM 8/19/2009, you
Look the other way and the mice will be out of your sight.
Did you possibly mean your repeater site??
73
Glenn
WB4UIV
At 04:19 PM 7/28/2009, you wrote:
Hey guys,
I am sure many of you have been through this before.
The evil mice decided to waunder in to my repeater sight. Up until now they
.
The digital transmitter has a Mask filter between the transmitter and
the antenna.
The skirts on this filter are almost vertical.
This is a very effective filter.
The in specification out of band noise can be very high.
73
Glenn Little
WB4UIV
Chief Engineer
WCIV TV
At 09:42 PM 1/10/2009, you wrote
Joe
These should work fine.
There is also a single cavity that was used in the receive line, IIRC.
I have a complete system that I picked up to haul it off. The
transceivers were made by SEA.
Their stock answer is that they are not modifiable for any use other
than what they were designed
I had a home built power supply that would
shutdown every time that I transmitted on HF. The
protection system was a little different and
caused the power supply to go into foldback
rather than blow the fuse. It required me to
shutdown the supply to get it going again. The
solution for me
I just bought a Wilson WS201 Mobile transceiver in the hopes of using
the receiver for a repeater receiver.
This is a crystal controlled radio. I cannot locate any information
on this radio. The FCC ID even comes back as a no find. The FCC ID is
ATE9PLWS201. ATE comes back as a Regency type
You can try lowering the antenna.
You can try a better antenna, one with a better front to back ratio
and better side lobe rejection.
If that does not work, you can try something that we do to our
microwave dishes when we receive off axis interference, place a
shield near the side of the yagi
The capacitance may be split between capacitors to reduce the effects
of internally generated heat, ESR and inductance.
I would use the same number of capacitors as the engineer that
designed the supply specified.
I would also use 105 degree C capacitors that have the lowest ESR
that I could
I have some copper pipe that is 6 inches in diameter and about 60 inches long.
This came from the filters on a 25 Kw channel 4 TV transmitter.
Would these work for a 6 meter repeater?
I am thinking that they are a little short in both length and diameter.
The feedline for the TV transmitter was
The FAA requires lights on towers at 200 feet and above. In some
cases, due to distance to airports, the FAA may require lights on a
shorter tower.
The FCC is the enforcement arm for the FAA for tower lights.
I suggest that you read Title 47 part 17 to determine the
requirements for tower
Is this the same manual ?
http://www.arireggioemilia.org/download/Manuali%20Radio/RADIO%20HAM%20ICOM/VEICOLARI%20ICOM/Ic-900/IC-900A_Esm.pdf
73
Glenn
WB4UIV
At 10:00 AM 3/30/2008, n4irs wrote:
I have a VERY good condition Icom 900 service manual.
The manual covers all the RF modules:
UX-19A/E,
Rosin is made from pine tar. It is organic, not man made. I do not
know why you would want to impregnate a transformer with this. Do you
possibly mean that you want to impregnate it with tar??
Your friend google will lead you to a source for your rosin.
73
Glenn
WB4UIV
At 08:54 PM
I just got a quote today for $1360.00 to climb a monopole. This is $85.00
per hour for an 8 hour day for two climbers. The tower crew is a 2.5 hour
drive away and they would charge us for the full day as we would kill the
day for them.
If they were in the area (which they often are) and are
The numbering of the digital channels is to help the people that know
nothing of TV past turning it on and changing channels. The station that I
work for is channel 4. Our digital transmitter is on channel 34, but, the
viewers know it is 4-1. That way they do not get lost in the channels. I do
And that handheld looks a lot like the Repco unit I went to school on. It
was either their 10-8 or 10-2 series. Repco sold these under a lot of
different names. They could not sell them under their own name due to
contract with the buyers.
These sold under the RCA, Aerotron, Wabco and about
Mike
I have the file. Where can I send it?
73
Glenn
WB4UIV
At 05:20 AM 12/12/07, you wrote:
If so, we'd like to add to the DB-4048 page
http://www.repeater-builder.com/db/db-4048.html
the PDF file for the Product Review article for the DB Products
DB-4048 duplexer from the June issue.
Mike
145.25 can be a real pain. We have a repeater on that frequency. It is CATV
channel E. We always have leaks from the cable rendering the repeater
useless in some areas until a call is made to the CATV plant. They go out
and tighten the screws on an amplifier (left loose by the last tech working
We had a 1500 watt 70 MHz circulator go bad. I disassembled it to see what
failed. IIRC there were 9 capacitors and at least 3 inductors along with
the ferrite ant tuning magnets. Really makes a TV transmitter quit when the
circulator between driver and final fails. Quite a site to see the
The TLD tells me it is VHF (132-174 MHz) but I cannot tell you if it is
132-150.8, 150.8-162 or 162-174. I may be off on the 162, but the split is
about there. The 2 in 8652 tells me that it is probably in the second
split, 150.8-162.
Look at the frequencies on the channel elements.
73
Glenn
The last time I checked with Bomar, they put a crystal into the element,
ensured that it worked and modulated correctly then send it out the door.
It never went through temperature compensation.
They may have changed.
73
Glenn
WB4UIV
At 05:55 PM 07/10/07, you wrote:
OK, I usually use
WE also use a line stretcher in TV. When you have two UHF PAs that are fed
to a combiner, it is very important that the phasing of the signals be
correct. We use a line stretcher in the output of the exciter to the
closest PA to effectively place the PAs at the same electrical distance
from
The receive IF filter will have to be changed and the transmitter deviation
changed. There are kits to change the filters. This would probably not be
type accepted for commercial narrow band use. It would be fine for services
that do not require type acceptance, ie amateur radio.
73
Glenn
If far enough from an airport, 200 feet. If close to an airport, it
requires a determination by the FAA.
If greater than 200 feet or within a boundary as specified by the FAA, the
tower has to be registered. As part of the conditions of registration, the
FAA will specify what the lighting
Tower ownership can be very costly.
Does the tower require lights?
If so the tower owner must ensure that the lights are maintained and
operating properly.
I think FCC rules part 73 cover tower lights. IIRC, an outage must be
repaired within 30 minutes or be reported to the FAA. The clock
to
be that only the tower owner was responsible. Now, everyone at the site
is.
Joe M.
Glenn Little WB4UIV wrote:
If so the tower owner must ensure that the lights are maintained and
operating properly.
Yahoo! Groups Links
Call ICM, send them the ICOMs, they will make the crystals for you.
73
Glenn
WB4UIV
At 01:02 AM 06/06/07, you wrote:
I need to change the crystals on the repeater bought from junkyard but
unfortunately I can not find the new set of receive crystals for the
amateur band.
Can somone direct me to
The only time that you need specific lengths of cable between pieces of
equipment is to cover up an impedance problem. If the impedances are
correct on the inputs and outputs of the devices that you are connecting,
the length of the proper impedance cable is immaterial.
73
Glenn
WB4UIV
At
Just make one. Find a short screw of the correct thread, cut a piece of
wire to the length that you need, attach a lig on one end and an alligator
clip to the other. The lug should be a ring type with a hole just large
enough for the screw. Place an internal star lock washer on the screw then
If your really meant what you asked, conversion to subaudiable frequencies,
220 milliHertz, the conversion would be very difficult.
If you really meant 220 MHz, the conversion should be very similar to any
other radio. Basically you have to convert the front end by reresonating
the coils at
The pass transistors are shorted, unless lightning shorted the rectifiers.
Hopefully the fuse was correct and blew before the transformer was damaged.
73
Glenn
WB4UIV
At 07:17 PM 02/28/07, you wrote:
my power supply keeps blowing the fuse
changed the pc board
i dont know where to go nent
any
I have been told that this is a known problem. The fix is to use a unified
chassis. I may be able to hel;p you with a unified chassis.
73
Glenn
WB4UIV
At 01:58 PM 02/14/07, you wrote:
We have a VHF Micor and during cold weather like we have now, we loose
the audio level and it seems that
I have some, what look to be new, Permakay filters that I do not need.
There is one TU540S, one TFN6022AS, one TFN6013AS and one TFN6000AS.
I would like to get $5.00 each or $15.00 for the lot plus shipping.
Thanks
73
Glenn
WB4UIV
Per ยง97.205 Repeater station.
(c) Where the transmissions of a repeater cause harmful interference to
another repeater, the two station licensees are equally and fully
responsible for resolving the interference unless the operation of one
station is recommended by a frequency coordinator
It is now just a matter of time. The problems with hams not understanding
what they are doing will increase. Interference will increase. Commercial
interests will petition the FCC for the frequencies. The hams will not be
able to defend their desire to keep the frequencies. Now the ham
IIRC QC was RCA trademark and CG was GE trademark for CTCSS. Johnson used
ToneGuard for their trademark.
73
Glenn
WB4UIV
At 05:39 PM 12/15/06, you wrote:
I always thought it was known as QC for Quiet Channel or CG for Channel
Guard.
-- Original Message --
Received: Thu, 14 Dec 2006
How fast are the cores moving that they require braking? Must have to slow
them down so that they will not break with the tuning tool.
73
Glenn
At 09:04 PM 12/08/06, you wrote:
Well you all showed that you're computer experts, now can you
get back to the topic and tell me if anybody have a way
Can anyone tell me what radios the following channel elements are for?
KXN1007A
K1049A
KXN1013B
KXN1043A
KXN1006A
KXN1049A
K1040A
Thank You
73
Glenn
WB4UIV
I work at a TV station that uses a Harris TV30L channel 4 TV transmitter.
It has a circulator between the visual driver and PA. It is deeper that the
one that you describe, but it uses type N fittings and is in the 70 MHz range.
The connector indicates quality in this case.
From the size, I
The very first thing that you need is a Radio Amateur Handbook. Read it and
get help understanding how transmitters and receivers work.
The next thing that you will need is a service manual on the radio that you
are working on.
You will need test equipment, Oscilloscope, Signal Generator and
What bandwidth? What insertion loss?
A 150 MHz xtal filter with 6 KHz BW has about 11.5 dB insertion loss.
A 140 MHz xtal filter with 40 KHz BW has about 5 dB insertion loss.
See http://www.filtro.net/products/filters/filters.asp
73
Glenn
WB4UIV
At 04:19 PM 11/19/06, you wrote:
Any
R-56 should still be available from Motorola. I used it as a reference when
I did design of tower site monitoring equipment. I had to specify grounding
requirements. The book and / or CD is not cheap ( the same as anything else
with Motorola on it). It is a good reference. MIL-HDBK-419 volumes
There should be a difference in the dielectric quality. In audio any old
dielectric will be fine as the upper frequency to be passed is 20 KHz or
so. For RF you need a better dielectric to cut down on attenuation.
73
Glenn
WB4UIV
At 07:55 AM 05/28/06, you wrote:
OK, so how is an RF RCA
Google shows that Richardson Electronics has the SO565J SCR. Further Google
shows that this is a 50V 65Amp non sensitive gate SCR.
Any device that meets these specs would work. Astron possibly changed part
numbers with production runs as different parts were available and the cost
of these
to find data, but sometimes you have to gig. Not
everything is obvious.
73
Glenn
WB4UIV
At 11:47 PM 05/27/06, you wrote:
Links would help because I tried Googling SO565, SO565J, S0565, and S0565J
with no
such positive results.
Gary
Glenn Little WB4UIV wrote:
Google shows that Richardson
Your friend Google produced this:
At 10:51 PM 04/02/06, you wrote:
Since I see a topic on Coax I got this E-Mail from a Ham Friend
Coax AF400, just like LMR400 for $0.35/ft. from
http://www.antennasystems.com shipped to my door for only $34.97 next day.
Has anyone heard of this Coax before
I sent the first one too soon! Too early, not enough coffee!
Your friend Google found this:
http://www.antennafactory.com/products/cable/rf/af.html
73
Glenn
WB4UIV
At 10:51 PM 04/02/06, you wrote:
Since I see a topic on Coax I got this E-Mail from a Ham Friend
Coax AF400, just like LMR400
Found this via google, not much, but something:
Part Number = SD1499-1
Description = Bipolar NPN UHF-Microwave Transisitor
Manufacturer = Various
V(BR)CBO (V) = 36
I(C) Abs.(A) Collector Current = 13
Absolute Max. Power Diss. (W) = 218
Semiconductor Material = Silicon
Package = SOT-119var
Are the transistors rate at 220 MHz? RF power transistors are made for a
specific frequency range and will not operate at all well above or below
the design frequency.
73
Glenn
WB4UIV
At 11:09 AM 02/06/06, you wrote:
Hello,
Does anyone have a good way of measuring the frequency of PC board
The selective frequency information comes from the engineers at EIMAC. When
I toured their plant a number of years ago, I asked about the frequency
selectiveness of the transistors. The engineer told me that a UHF
transistor will not work at VHF. The impedances are wrong as well as the
http://pages.cthome.net/fwc/NAV-MFG.HTM
Lists some of the military codes to indicate who made an item.
73
Glenn
WB4UIV
At 03:15 PM 02/02/06, you wrote:
I think the biggest problem that we face is that our adaptors tend to
not have a pedigree. I have some that I know were from Radio Shack,
How did the installer get the braid ring installed backwards? In all of the
Type-N connectors that I have installed on RG-214, The braid ring is
relived so that it seats at the end of the insulation with the braid coming
through and being fanned out. The person that installed the braid ring
Why would you mount the second antenna upside down???
Is this to keep the coax to the two antennas close together and gain the
loss through the coax to the upside down antenna??
Is it to ensure early failure of the upside down antenna because of
moisture buildup??
Is it to cause the signal to
Another possibility is condensation. The amplifier heats up and moisture in
the air condenses during cool down. Contaminants in the air and on the
surface of the boards cause conductive paths. The boards were properly
cleaned after any soldering on the boards? Flux is hygroscopic and becomes
It looks like I will soon own some scrap copper or brass rigid coax. This
is 3 to 4 inches in diameter, in 20 feet lengths with flanges on both ends.
The TV station that I work for is going to be scrapping this. Does anyone
have a need for some to possibly make UHF or higher duplexers/filters
What is a heat shrink??
73
Glenn
At 09:20 PM 12/12/05, you wrote:
Heres a question for someone to answer, IF you were to take say a gm300
45 watt radio and take say a lowband heatshrink from a maxtrac would
the bigger heat shrink help disipate the heat better or would it not
make a diference?
Are these the radios that have the instant heat filaments and melt the
solder on the tube socket when the mic is left off hook and the filaments
stay on constantly?
Thanks
73
Glenn
WB4UIV
At 11:12 PM 12/08/05, you wrote:
I have available for sale several RCA 500 series Super Carfone UHF
To tune the duplexer correctly requires q VNA (Vector Network Analyzer).
This will ensure that you have the duplexer at the correct frequency and
impedance.
You can tune a duplexer to about 90% of it's ability with a spectrum
analyzer and a tracking generator.
You can do a fair job with the
What band?
For VHF, it would be very difficult, even if only on one channel due to
duplexer size.
For UHF, the duplexer is doable, however, it would have to be retuned when
you change frequencies, so, not practical.
73
Glenn
WB4UIV
At 10:41 AM 11/16/05, you wrote:
I am curious,what would
Use properly installed type-N connectors, then seal. I have undone
connectors that have been properly installed and used in an ocean front
environment for 20 years. The connectors are as bright and clean as the day
they were installed.
73
Glenn
WB4UIV
At 10:39 AM 11/12/05, you wrote:
Here is a good link. That one did work just before I sent the link. Here is
a link that is working:
http://combatindex.com/mil_docs/html/hdbk/0100/MIL-HDBK-419.html
73
Glenn
WB4UIV
At 09:51 PM 08/08/05, you wrote:
Glenn,
I went to the below mentioned link and it comes back with page not
: Glenn Little WB4UIV [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 02, 2005 8:51 AM
Subject: Re: [Repeater-Builder] Repeater Grounding
Down load a copy of MIL-HDBK-419 Grounding, Bonding, and Shielding for
Electronic Equipments and Facilities http://tscm.com/MIL
Down load a copy of MIL-HDBK-419 Grounding, Bonding, and Shielding for
Electronic Equipments and Facilities http://tscm.com/MIL-HDBK-419A.PDF ,
this is the military handbook on grounding. It is large and in two volumes
about 812 pages. One is theory, the other is practice. Covers grounding for
For what frequency, power, intended use?
73
Glenn
WB4UIV
At 10:13 AM 07/31/05, you wrote:
Hi,
Just a question to ask what type of coax which you would recommend?
Thanks
Yahoo! Groups Links
Yahoo! Groups Links
* To visit your group on the web, go to:
:33 AM 07/31/05, you wrote:
Hi Glenn,
VHF highband and 25 watts
--- In Repeater-Builder@yahoogroups.com, Glenn Little WB4UIV
[EMAIL PROTECTED] wrote:
For what frequency, power, intended use?
73
Glenn
WB4UIV
At 10:13 AM 07/31/05, you wrote:
Hi,
Just a question to ask what type
I also have the LBI library on microfiche. I have copied some at the
library onto paper, but the quality is not real good. I suspect that the
microfiche is not going to produce great PDF files, but much better than
nothing. My set is also available for reproduction to PDF. I have been
looking
Laryn
How many of each do you need and what size are they? What attenuator are
these in?
73
Glenn
WB4UIV
At 11:34 PM 07/07/05, you wrote:
I have committed the unforgivable sin in RF world. I transmitted into
my step attenuator and burned up some precision resistors. kicking
self now
What
Is your repeater on 145.035?
73
Glenn
WB4UIV
At 09:48 PM 07/05/05, you wrote:
Ok, the situation is that my repeater is being heard by commercial
aircraft on 132.950 Mhz. At first they was able to identify one user
of the system, this was in June. Then again the repeater was heard on
June 22,
Paul
910 Kc is twice the 455 Kc IF. Possibly there is a clue here. Motorola had
problems with spurs in the Metrum VHF ham transceiver. It also used one
crystal for both transmit and receive. I guess that this is a good data
point as to why mobiles should not be used as repeaters. The repeater
Paul,
You might try [EMAIL PROTECTED]
This is the test equipment reflector that I found.
73
Glenn
WB4UIV
At 11:20 AM 06/21/05, you wrote:
Hello,
I know this is a bit off topic but I need a service manual for a IFR 1100 S,
is there any message groups out there that may be able to help?
If the Astron supply has a crowbar installed, the supply will have very
little headroom before the crowbar shuts it down. You can probably change
the detection circuit for the crowbar so that you have a volt or so of
headroom at 15 V.
73
Glenn
WB4UIV
At 08:28 PM 06/07/05, you wrote:
Can an
Q is figure of merit. The Q of a circuit determines how selective it is. In
a filter the Q would be an indication of the slope of the skirt. The higher
the Q the sharper the slope of the skirt and the more rejection available
to the filter. In a capacitor it is how lossy the capacitor is, the
I was told that cable starts to act like lossy waveguide when the cable
gets large and the frequency get high. I now see that good RF cable
manufactures and sellers now publish the upper frequency limit when they
publish loss for larger cable.
73
Glenn
WB4UIV
At 09:50 PM 06/04/05, mch wrote:
Does the connector look like this?
View in courier font.
___ ___
| \/ \/ |
| ooo |
| |
| ooo |
___
If so I can provide the probable pinout. It should have plus 12 volts,
ground and a jumper between two pins for the
Al
The APCOR unit came in a number of flavors. Could be MT-500 or MX-3XX or
some other HT as the transmitter and receiver. IIRC there is a 10 Watt PA.
The duplexer is usable. The unit should be 10 frequencies and 10 PL tones.
Probably the PL tones are selectable separate from the frequency.
Is the preamp in a shielded box?
Is the power to the preamp via a feedthrough capacitor?
How does the repeater perform without the preamp?
What does the transmitter look like on a spectrum analyzer?
How does the repeater work with a simple 1/4 wavelength vertical?
Is all of the cable going into
I will see if I still have a manual.
What frequencies are you using?
I volunteer for the local Red Cross.
73
Glenn
WB4UIV
At 07:00 PM 05/13/05, you wrote:
This is off base for repeaters BUT I'm looking for a manual for the
Motorola Micom SSB 100 mobile HF radio to finish off a local Red
If you cannot afford International, you cannot afford to put a repeater on
the air.
Repeaters can get to be costly. Being a good neighbor is very cheap
insurance. Poor crystals = being a possibly bad neighbor (causing
interference or being off frequency).
Good quality every thing in a
Matt
The low band equipment that has noise blankers receive on a nearby
frequency and use the impulse noise that it sees to reduce the noise on the
channel if interest. They invert the signal from the nearbuy frequency and
apply it to the channel of interest. This would apply to broadband
These sound like CATV equipment where they received one channel and
translated it to another.
Since these appear to be UHF out, there would be little that could be use
on 6 meters.
If you has something that was channel 2 in, you would have circuitry that
could be made to tune 6 meters for
What does the radio look like on the spectrum analyzer??
73
Glenn
WB4UIV
At 03:12 PM 04/18/05, you wrote:
Howdy all
I finally have gotten around to setting up my TKR-850 UHF repeater.
A few questions.
I know that power is set up in software, however, I can't get but
about 27 watts max out
Mil Spec RG-214/U. Make sure that the two shields are silver plated and
that the center conductor is silver plated.
You need the double shielding to minimize desense. And you need the silver
plating to minimize shot noise as the cables are moved.
73
Glenn
WB4UIV
At 11:10 AM 04/17/05, you
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