Thank You , I now have a Shortcut on My Desktop to that and Even on My
USB Thunbdrive and 3 1/4 floppy disk , Yes some still use them and that
has nothing to do with old age lol
Happy Repeater Building
Don KA9QJG
This is what you saw - and this is what you are looking for:
Hey Gareth,
Nice to hear from you. Thanks for the info on the power supply and I will heed
your warnings about battery types. I am possibly able to get a circuit diagram
for this from another group member and this will be very helpful in my possible
future use of this supply. My primary want
Hiya Graham,
One of the reasons we binned these type of supplies was for excessive AC ripple
that they produced, just be mindful of this on your adventures with sealed type
batteries.
By the way, If you need solar panels try this crowd out over in Oz,
The photo looks like a repeater supply.
Many repeater supplies provided a 9.6v DC low
current output for the receiver and exciter, some
had a second low current output at 13.5-13.8vDC
at 3-4 amps for the other audio stages, and most
had an unregulated (as high as 16v) high current
output for the
Try Repeater-Builder key page
http://www.repeater-builder.com/keyspage/keyspage-index.html
Ray,
ONE FOR STARTERS, could also use one EFJohnson cabinet lock assembly as
well. Thanks
de Lee ,
K4LJP
73
On Wed, Feb 24, 2010 at 12:47 AM, ray kalbfeld rpkalbf...@hotmail.comwrote:
how many Johnson keys you need?
Raymond P. Kalbfeld
16850 Collins Avenue Suite 112-463
Sunny
If it is the double sided key then its a 2553. If the cabinet has an external
handle that the lock is in its a CH751.
For some reason Motherola used a different key on the 6' cabinets than on the
shorter (Compa) cabinets.
Unfortunately I don't have a spare, but they are made by Chicago Lock Co.
Hello Don,
Look at the bright side of life. Tomorrow you'll be having fun looking
for it again!
73, Joe, K1ike
Also heading for the other side of the hill...
ka9qjg wrote:
Let Me tell You youngsters out here How bad Memory loss is , as Some
of us get older I could swear that on
From a Decibel Products engineer regarding the length of the radials on the
DB-201:
these values were determined empherically for best performance and may be
due to the offset characteristics of the folded dipole.
Chuck
WB2EDV
- Original Message -
From: skipp025 skipp...@yahoo.com
Actually, the information presented in the QST article was in reference to
the practical feeding of the driven element of yagi type antennae where the
normal feedpoint impedance can be quite low and may well be in the range of
8 to 15 ohms. So raising the impedance from 36 to 50 ohms with this
I have not one but two of these gems sitting in my office right now... 2
channel crystal controlled repeaters in a nice battleship grey cabinet. I
believe BLM used these here in the western states for quite a long while
before switching to Daniels.
A factory test sheet in one of the 3 service
A while back didn't someone post that they had UHF Motorola Genesis series
antennas available at a good price? I am looking for a few, maybe as many as a
dozen, if the price is right.
Thanks,
Albert
Just the standard words of wisdom; be sure you verify that it works, and how it
works before starting any conversion. That way you only have to deal with one
problem at a time not compounded problems.
Milt
N3LTQ
- Original Message -
From: AJ
To:
Completely understood :) The first unit I was able to verify is acting
correctly on the 173/171 pair in to a dummy load with 8 watts out, broke
squelch at .11 uV. Second unit was missing the TX crystal; swapped between
cabinets and had identical results.
On Wed, Feb 24, 2010 at 9:24 AM, Milt
I know I am going to get the singular answer of WHY but I really would like
some technical input on this.
In my car I have an old Genesis series convertacom connected to a dual band
Comet antenna. I often will swap my VHF and UHF HT back and forth and utilize
the dual band capability of my
Not why but WHY !!
On Wed, Feb 24, 2010 at 11:56 AM, hitekgearhead
hitekgearh...@hotmail.comwrote:
I know I am going to get the singular answer of WHY but I really would
like some technical input on this.
In my car I have an old Genesis series convertacom
2 coaxial switches will work, and you could leave power on. Given that I know
what I am capable of and this type of system would lead to muliple failures by
me as I failed to remember to switch things. If it was me I would just move the
coax connectors as I swapped radios. I have done something
My initial idea was to run an antenna switch from the
convertacom to the amps so I can manually select which one
the signal goes to. Then on the output side of the amps I
thought about using an antenna duplexer on the output of the
amps to feed the antenna.
I think you'll find that
Try using a dual amp. And dual antenna then you won't forget to switch. Just my
2 cents
Ki4ljm
Marc Lonstein
M.O. Unlimited Inc.
P.O. Box 5364
Fort Lauderdale, FL 33310-5364
Ph: 954-720-9200
Ph: 561-368-3557
Fax: 561-368-1885
mailto:m...@mounlimited.com
www.mounlimited.com
This e-mail
In the gnd plane example the feed point is in series with the driven element,
and in the example in which you are referring there is a tap up the driven
element understandably to get to a higher impedance and the feed is in parallel
to the driven element (as in a tap up an inductor in a
On Wed, 24 Feb 2010, hitekgearhead wrote:
What I would like to do is parallel these two amps with some kind of
switching/duplexer setup so that I could easily switch from VHF to
UHF.
My initial idea was to run an antenna switch from the convertacom to
the amps so I can manually select
Hello,
I have a TLE1714A PA (470-512 MHz) That I would like to use for my Repeater
on 449 MHz. I see in the manual there is a few capacitor, transistor and
inductor changes compared to the TLE1713A PA (450-470 MHz ) PA. I also noted
the microstrip is a different part number and can see there
On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote:
Is it possible the AM signal is getting into an audio stage instead of the
receiver front end? I had that happen once.
Same here. All audio inteconnects are now tiny coax cables at that site
now, installed with shield grounded at ONE
On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote:
Is it possible the AM signal is getting into an audio stage
instead of the
receiver front end? I had that happen once.
Same here. All audio inteconnects are now tiny coax cables at
that site
now, installed with shield
Ok, thanks to all that replied. It looks like it is a 2553 that I need.
Looking at the chart it looks like the CH751 is for the old outdoor cabinet
and the 2553 is for the indoor cabinet.
Also looks like the GE cabinet that I have is probably the desk mate and
takes the LL201 key.
Ted, K9MDM
If it was just audio then there would be no feedback of the PL/DPL
tones, keeping the repeater locked up.
Good advice though.
Jeff DePolo wrote:
On 2/23/2010 3:11 PM, Jim WB5OXQ inb Waco, TX wrote:
Is it possible the AM signal is getting into an audio stage
instead of the
receiver
On the comment below all I can mention is from my experience which may or may
not be valid in this case. When running amplifiers through diplexors as
suggested I have damaged the out put transistors on both units, no I am not
sure exactly what did it but as both amplifiers failed my guess is as
OK - you are getting closer.
Yes, from your original description of the Motorola cabinet, the 2553 is
correct. It is the Micor / Motrac era.
Yes, the CH751 is the large beige upright cabinet with a handle on it.
Motrac era.
NO, if it is truly a GE DESKMATE cabinet, it will take a
Hi Bill,
Well now I am having second thoughts! The Motorola cabinets that I have are
older than the Motrac era.
I can't recall the model of the radios but the finals in one are 100TH
tubes. That was before the motrac.
The cabinets are at my farm in Wisconsin so I can't run out and look at
Don't be too sure about that. Once the am station signal gets into the
receiver it can go anywhere and cause havoc. It could be getting into the IF
or the mixer once picked up by cables.
73
Gary K4FMX
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
gary let me know which keys you think you'll need i 'm certain i have a wide
selection.
mot-ge-efj-rca-and other even older.
mdm
Ted Bleiman K9MDM
MDM Radio If its in stock...we've got it!
P O Box 31353 - Chicago ,IL 60631-0353
Phone 773. 255. 9838 fax 773.775.8096
see our
Albert,
I had a very similar installation as you describe in my car, and I used a
dual-band brick PA with my setup. 5W VHF yielded 50W / 4W UHF yielded 40W.
My biggest issue with the setup was they side contacts on my radios wouldn't
make good contact all the time with the MVA, so I yanked it in
Ted Bleiman K9MDM - MDM Radio k9...@... wrote:
Gary let me know which keys you think you'll need i 'm
certain i have a wide selection. mot-ge-efj-rca-and
other even older.
mdm
Oh yeah..? Got an Allen B. Dumont, (Fred) Link key in
that collection?
:-)
s.
At 2/23/2010 17:16, you wrote:
Mark et al,
Yes, this repeater is using the Motorola T1500 series bandpass cavities
(two each for rx and tx). I've tried running rx and tx both duplex and
seperate (borrowing a nearby antenna with permission). I can hear the
interference underneath my signal when I'm
skipp025 wrote:
Oh yeah..? Got an Allen B. Dumont, (Fred) Link key in that collection?
My father had a Link FM transmitter on VHF - used a pair of 2E26's in
the final. It was paired with a receiver, but I don't recall what it
was. The receiver would get so hot it would burn up the tube
Did Fred use locks? Perhaps that was your point. I don't remember locks on
the mobiles or upright base stations that I had. Seems like the mobile
covers went on and off similar to the GE twin coffins (which I don't
remember requiring a key). It's hard to remember the details of those radios
except
Old topic, but I thought I would start here rather than a new thread. I am also
having difficulties in that when I plug my repeater cable between my two SM50s,
the transmit radio immediately goes into transmit. I am fairly certain I have
everything programmed properly, with Pin 8 programmed
Yep -
I even have the round grilled speaker that said Link in the felt.
Bill
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Radioman
Sent: Wednesday, February 24, 2010 4:40 PM
To: Repeater-Builder@yahoogroups.com
Subject:
Here in southern New England where the 900MHz band has flourished in the
absence of a 70cm network. I have not been personally involved in putting any
of the repeaters on the air, but I can tell you that the split is pretty even
between Pl/DPL. Not sure how it will work with a 800 to 900MHz
What's the key number or other stamping? Now I'm going to have to look thru
my key collection and find it. Somewhere I have a picture of me sitting next
to my Link six meter base station, but the radio and all the spare
transmitters and receivers and the mobiles are long gone.
Harry, W0BL
During receive only, the draw is about 0.125 amperes. During duplex
transmit, the current draw goes up to about 0.355 amperes. These numbers
were measured on one Micor station, and I would expect the current draw to
vary perhaps +/- 50 mA between various stations. YMMV.
73, Eric Lemmon WB6FLY
If you have a similar key, you may be able to get into the cabinet my smoking
a key.. Go to Youtube to learn how, if you don't know or have forgotten.
From: Radioman radio...@steamboatnews.com
To: Repeater-Builder@yahoogroups.com
Sent: Wed, February 24, 2010
Scott,
A proper answer must address the differences in the way Amateur and
commercial radios encode and decode the PL (CTCSS) and DPL (CDCSS) tones.
Generally, commercial-quality portable and mobile radios can encode or
decode both schemes well. Again generally, most Amateur-grade radios can
I agree with Bob.
Mixing could also occur down at the guy anchor area, where cables are woven
through the turnbuckles. Had it happen here...
Laryn K8TVZ
The cause of your interference problem is not RX overload. It is as
others have suggested: a mix occurring somewhere in the near
My father had a Link FM transmitter on VHF - used a pair of 2E26's in the
final
Never saw that transmitter. The ones that I had used a 2E26 to drive an 829B
final for VHF high. Only put out about 30 to 40 watts but it was an easy mod.
to a 5894. It would smoke then; easily put out 80 to
Oh yeah..? Got an Allen B. Dumont...
Back in the day I bought a bunch of those old DuMont radios at a government
auction. Didn't know anything about them but I figured, how bad could they
be? Well,I found out. I ordered one set of crystals, messed with the thing
for a while and finally
Just put it on the air and run with it. I have been using a TLE1714A PA on
445MHz for over 15 years, and it actually puts out a little more than some of
the 1713's I have used. I never did any down-banding mods to it, as it has
played well as is. Efficiency is no worse than the 1713s at
I am still looking for a service manual / system index for the RCA Series 700
and/or Series 1000 mobile radios in the 50 MHz bands (VHF low band). Any help
is appreciated. Please reply to kc5...@yahoo.com
Thank You!
73's de
KC5DBH Matt
Hi guys
This is way over the top..:)
but I am trying to purchase a part for the
Drill Doctor 750 Professional, and the Home Depot
lists as in-stock. Part # required is sa01326ga.
I proceeded to the check out basket only to find they have not included
Australia in their menu for PnP.
Even
Tony,
Do you hear a matching signal around the site on 5 MHz?
Ron
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