Thanks for the feedback Gents... (Eric, I will get the serial number to you for
your info).
... Interestingly this repeater was operating on a very lightly loaded channel,
through a TX combiner, so was seeing a nice 50Z load. It was running at 50
watts but out of one hour there would have been
[EMAIL PROTECTED] wrote:
BTW, these things need not triple or even double the price of a new radio,
as some have suggested. An extra pot for CTCSS deviation, decent CTCSS
decoders, higher IP3 front-end amps mixer more front-end filtering
would probably add $50-$100 to the cost of the
Gareth Bennett wrote:
Interestingly we replaced the -750 with a Vertex VXR-9000 repeater
and commissioning tests revealed about 3 dB better sensitivity than
the 750's for 12dB Sinad.
Hmmm-you might check effective sensitivity with the antenna connected,
etc, and see what you get.
---
Jim
I could not find a link on the repeater-builder.com website in order
to submit articles. Anyway, here is an instructional on building a
repeater from Icom mobile radios. If someone could submit it to the
Icom section I think it could help others.
http://www.prestonmoore.com/repeater.html
--- In Repeater-Builder@yahoogroups.com, Bob M. [EMAIL PROTECTED]
wrote:
First thing I'd do is pull the Uniboard and squirt
some contact cleaner into the power control pot, then
turn it back and forth a dozen times to clean it. Then
squirt some into all the connectors between the
Uniboard
Has anyone ever got one of these to work on the 900 ham band with any
success? I have tried to search for stuff and have not found too much
info on it. I have the service manual and its pretty good.
Thanks
Eric
Mike,
I have the Zetron Model 37 in PDF format. I would be happy to email
it to you. Send your email address to me at dave at ki4qah dot com
and I will send it out.
Dave
KI4QAH
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ
[EMAIL PROTECTED] wrote:
I was handed a Zetron model
Seems kind of bizare that an FM Rig PA would run anything but
Class C mode. The PA and related circuit should be all about
practical power control or someone didn't do their homework
back at square one.
In regards to your the last portion of the below text... pretty
much many a PA section
I agree... not honestly wanting to start more than the normal fire
and brimstone reply posts I'll say the Vertx Repeater I tested had
really great sensitivity but not so hot 3rd order intercept specs.
There is no easy/real fudge for modest/bad 3rd order performance
when you're receiver is
Re: IWCE Convention (Las Vegas)
Some of you know about and might actually attend the Las
Vegas IWCE Convention March 28, 29 30th.
I will be there with the rest of the unwashed masses for at least
the first two days of the show.
So...
If you plan to attend the show and would like a free
JU1 is only meant to be left in place for
trouble-shooting, and it tells the CPU to ignore any
output power errors that would normally shut it down.
You should still be able to control the power with the
pot. If not, trace that circuit.
There has to be some kind of forward power sensor,
either
Hi folks,
This post is for the benefit of those who may search the archives in
the future and therefore avoid or easily recover from the mistake I made.
You may recall that last week I posted regarding a dimly lit Disable
LED on the station control module of a Motorola MSR2000 repeater
station.
Anyone help me I have a 1.2 GHz repeater, but no service monitor or
signal generator for these frequencies.
My service monitor, a Singer-Gertsch only goes up to 499.995 Mhz. I have
tried using the third harmonic in the 420-427 range but either the
service monitor is well filtered, or the
What are good 1200MHz antennas for repeaters? Where is
the line between quality and price? What should I avoid?
tnx,
--STeve Andre'
wb8wsf en82
On 3/18/07, preston_b_moore [EMAIL PROTECTED] wrote:
I could not find a link on the repeater-builder.com website in order
to submit articles. Anyway, here is an instructional on building a
repeater from Icom mobile radios. If someone could submit it to the
Icom section I think it could help
On 3/16/07, Paul Metzger [EMAIL PROTECTED] wrote:
Oh, and one last comment, most every Amateur Radio potable is unable
to do split Tone PL's. One Tone PL for TX and another Tone PL for RX.
I don't know why that is so. It would just take a little extra code
writing, but what do we expect, It's
Gareth,
Be aware that a TX combiner can be a very reactive load, as is a duplexer,
and the transmitter PA may react quite differently when feeding the combiner
than when feeding a nice, stable, non-reactive load such as a resistive
dummy load. Moreover, you should not assume that your
Gareth,
Don't know about the 750 but Kenwood replaced all five PA in my TKR-850
trunk system, paid the labor and everything. All I paid was a penny each
for the parts.
Paul
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Gareth Bennett
Sent:
The fact that most service monitors stop at 1 GHz or 500 MHz is
probably one obstacle to more use of the 1.2 GHz band. There are
some pieces of test equipment becoming available at moderate prices,
so that may change.
It sounds like your immediate interest is receiver testing. Some 2
GHz
Question for the gurus: I am tuning up and donating an E.F. Johnson CR1100
repeater to the local Ham Club. They have asked me to install a talking,
chirping, beeping type repeater controller (which they have offered to buy). I
work with basic repeater, one each type stuff, so I have no idea
Heres my 2¢ worth
My group uses a CAT-300 interfaced to a Kenwood TKR-820. I just received
the EEPROM which enables the controller to be programmed via laptop
computer. This means that until I install this upgrade, any changes I need
to do are programmed via DTMF coding. Honestly, I cant
Ben,
You might have better luck posting your request on the mailing lists that
cater to this topic, namely, the Repeater-Builder and Test Equipment lists.
I am cc-ing those lists in this response. Good luck!
73, Eric Lemmon WB6FLY
-Original Message-
From: [EMAIL PROTECTED]
Hey Will, long time no see ;)
Ill second the CAT controller route for the Chirp Beep and Talk features.
Weve used the CAT-1000 on one of our club machines for over a decade with
little trouble. When we upgraded the other machine we bought another 1000.
The 1000 would be overkill, but the
Take a look at the Arcom RC-210. It has all the features you mention,
plus LOTS more if you want them. The controller kit fits your budget,
but the chassis for it is another $100. It supports the Arcom auto
patch as an option.
If you don't need/want a 3 port controller, it may be more than you
Announcing Digital Ham Yahoo Group
This group is dedicated to the discussion development of amateur /
ham radio use of digital voice data communication techniques
utilizing D-STAR digital voice data, APCO P25 digital voice, packet
radio(including APRS), HSMM(High Speed Multi Media) /
Does anyone have access to, or willing to part with a users manual for
an IFR-1600? Thanks in advance!!! Brian nb9e
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