Re: some simulcast questions
That¡¯s what CalFire does, and it isn¡¯t better. First, you can¡¯t tell that the channel is in use or hear the communication if you are out of coverage of the repeater that is in use. Second, you don¡¯t get to take advantage of voting in areas of overlap. And third, you can¡¯t take advantage of the voted input to use any selected channel to yell for help. In the described system, dispatch hears you, even if you selected the wrong output to listen to.
Matthew Kaufman
On 9/10/2018 5:28 PM, Matthew Kaufman matthew@...
[Repeater-Builder] wrote:
> Another thing to think about is to do what a few fire departments around
> here have done... add another site, use the same input frequency at all
> sites with a voter, but have different outputs. Yes, you'll need another
> frequency coordinated, but you were going to have to do most of that for
> simulcast anyway.
>
> Both San Mateo County and Monterey County, California are running setups
> like this.
>
> Matthew Kaufman
>
Or better yet, use the same input and output, same tone on output,
different tones on each input. Program channels for each site, and they
can switch as needed. But all will hear all sites, depending on coverage
and location.
------------------------------------
Posted by: wd8chl <wd8chl@...>
------------------------------------
------------------------------------
Yahoo Groups Links
<*> To visit your group on the web, go to:
? ?
<*> Your email settings:
? ? Individual Email | Traditional
<*> To change settings online go to:
? ?
? ? (Yahoo! ID required)
<*> To change settings via email:
? ? Repeater-Builder-digest@...
? ? Repeater-Builder-fullfeatured@...
<*> To unsubscribe from this group, send an email to:
? ? Repeater-Builder-unsubscribe@...
<*> Your use of Yahoo Groups is subject to:
? ?
|
Re: some simulcast questions
what did you use to monitor the lines for the voting cards? ? telephone or wifi..very interesting projects that you have Millin
From: "Repeater-Builder"
To: "Repeater-Builder"
Sent: Monday, September 10, 2018 11:27:58 PM
Subject: [Repeater-Builder] Re: some simulcast questions
We use the RTCM/Voter boards in a simulcast environment here. I have a UHF repeater with two sites currently (three sites are voted).? They work well and there is no discernible CTCSS tone buzz or hum (all voter boards and audios are GPS locked). Identical gear. Regards Hayden VK7HH
|
Re: Velocity Factor explained please?
If you are only using one PL or DPL you do not use the Multi
Table.
If you are using more than one, use the multi table, just put the
first tone in the channel? and the rest in the Multi Table.
Dennis
On 9/23/2018 10:35 AM,
ssmoody@... [Repeater-Builder] wrote:
toggle quoted message
Show quoted text
?
Do I program the QT tone encode in the Channel, or the
Multi Table?
New to Kemwood programming.
Sorry for the dumb questions.
Scott
|
Re: Velocity Factor explained please?
Do I program the QT tone encode in the Channel, or the Multi Table?
New to Kemwood programming.
Sorry for the dumb questions.
Scott
|
Re: Cables for GE Mastr II S3V225UAUHA
On 9/22/2018 11:51 PM, skipp025@... [Repeater-Builder] wrote: Speaking of the Devil.... (GE Mastr ii High Power, Paralleled Amplifiers)
Not having read the first portion of the thread, I don't know if this has already
been brought up... but,
The exact animal we're talking about here is up on Ebay for sale... WARNING!!!! This is a classic attempt of a Junkenders infected person trying to draw you into their ranks.? Your parents warned you about such people. Joe
|
Re: Cables for GE Mastr II S3V225UAUHA
Speaking of the Devil.... (GE Mastr ii High Power, Paralleled Amplifiers)
Not having read the first portion of the thread, I don't know if this has already
been brought up... but,
The exact animal we're talking about here is up on Ebay for sale... maybe
that's where this thread started from?
Anyway, great pictures if you look at the amplifiers, the power combiner
splitter panel.
EBay item number: 273466569823
GE MASTR ii 225 Watt VHF Repeater Amplifier System
Enjoy
Ferritronics Tone Panel
|
Re: Cables for GE Mastr II S3V225UAUHA
skipp,
Do you think the specific cable lengths were done for
circuit design, or just convenience of cabinet equipment
installation? Joe I try not to think too much... but the answer to your question is just the location in the cabinet. s. On 9/22/2018 8:02 PM, skipp025@... [Repeater-Builder] wrote: > The original RF leads (coax) from the splitters to the dual amplifier > input jacks was not the same length, same with the output lengths. > But the total measured length of the input and output cables to > each external amplifiers was the same. If you can get your head > around the input cable to amplifier A was the same length as the > output cable for amplifier B. The converse of the amplifier A output > cable was the same length as the B amplifier input cable.
|
What are you disagreeing with??
You have no reference to anything.
Glenn
On 9/22/2018 9:55 PM,
rhyolite@... [Repeater-Builder] wrote:
well, I will just have to disagree with all that!
Repeaters anyone?
--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
|
Re: TKR-850-1 v.1 repeater parts needed
Anyone with TKR 850-1 v.1 Parts please contact me I am in need of? a complete rx board or another TKR no one needs cheap I can use for a temporary back up.
|
well, I will just have to disagree with all that!
Repeaters anyone?
|
Re: Cables for GE Mastr II S3V225UAUHA
skipp,
Do you think the specific cable lengths were done for circuit design, or just convenience of cabinet equipment installation?
Joe
toggle quoted message
Show quoted text
On 9/22/2018 8:02 PM, skipp025@... [Repeater-Builder] wrote: The original RF leads (coax) from the splitters to the dual amplifier
input jacks was not the same length, same with the output lengths.
But the total measured length of the input and output cables to
each external amplifiers was the same. If you can get your head
around the input cable to amplifier A was the same length as the
output cable for amplifier B. The converse of the amplifier A output
cable was the same length as the B amplifier input cable.
|
Re: Kenwood TKR-750 Ver2 AUX I/O Programming Help for COR - CTCSS TX Triggering?
If you're using the internal controller. program up Aux In/Out 4 for
QT/DT Enc Enable. Program up Aux In/Out 6 as an output and for COR as
Active Low. Jumper pins 23 and 25 of the DB25 on the rear
together
Voila!
Ken
At 05:40 PM 9/22/2018, you wrote:
?
I'm trying to get the Repeater to send QT tone only on a COR signal.
Then my remote link station will be set to have RX Tone, so the repeater
CW ID won't go through the Internet link.
Scott
------------------------------------------------------------------------------
President and CTO - Arcom Communications
Makers of repeater controllers and accessories.
Authorized Dealers for Kenwood and Telewave and
we offer complete repeater packages!
AH6LE/R - IRLP Node 3000
"We don't just make 'em. We use 'em!"
|
Re: Kenwood TKR-750 Ver2 AUX I/O Programming Help for COR - CTCSS TX Triggering?
I'm trying to get the Repeater to send QT tone only on a COR signal.
Then my remote link station will be set to have RX Tone, so the repeater CW ID won't go through the Internet link.
Scott
|
Re: Cables for GE Mastr II S3V225UAUHA
The only time I've used amplifiers in parallel they had
measured sections of 75ohm [could have been 1/4 waves] to
split into and combine out of the PAs.
Ray - if you've never worked on a high-power solid-state VHF
or UHF Master II, they come with high-power Wilkinson splitter
and combiner external to the PA's. Inside those units are
quarter-wave sections of 75 ohm line (RG-302) and the 100
ohm floating resistor. The OP is asking about the length of
cables that go to/from the splitters/combiners and the
amplifiers which, since everything is already at 50 ohms,
can be any length provided that the resulting RF from each
PA arrives at the combiner in-phase. --- Jeff WN3A A few years past, directly behind the Dayton Hamvention, Hara Area Repeater Builder / Jeff / Junk Enders Group, Flea Market location (mouth-full wasn't that) ... one of the surplus everything equipment sellers came up with a cabinet or two, containing beautiful Mastr ii VHF high power repeater/base station(s). Members of this group didn't take long to make a deal and start parting out the systems. A Left Coast Junk Ender's 12 Step Program Member fell right off the wagon for the power combiners Jeff mentions above. The original RF leads (coax) from the splitters to the dual amplifier input jacks was not the same length, same with the output lengths. But the total measured length of the input and output cables to each external amplifiers was the same. If you can get your head around the input cable to amplifier A was the same length as the output cable for amplifier B. The converse of the amplifier A output cable was the same length as the B amplifier input cable. Again, the net cable length of each amplifier path from and back to the splitter/combiners is the same. The splitter and combiner are the same exact circuit, in the GE Mastr ii system, even mounted on the same 19" rack plate... with SO-239 chassis mount coax jacks. Easy enough to make if you able an willing... cheers, Ex Hara Brat Mister, now a Greene County Fairgrounds pork chop sandwich research and quality control person.
|
Still looking for a Receive board for this repeater 450 to 480 mhz
|
OT---Re: Re: Final notice
I wish everyone would stop blaming the insurance companies and medical professionals for all of this. As a business, they are only reacting to consumer demands and (mostly) government regulations. The two most heavily regulated industries in the country are healthcare and banking. The government regulations these industries must follow are massive, overbearing, and insanely expensive. Remove the reg's, and allow them to actually compete in a free market (something this country hasn't seen in about 150 years), prices will drop, quality will go up, and everyone wins.
toggle quoted message
Show quoted text
There needs to be some consumer service that reviews these bills routinely
and levels the playing field for us. I have been putting off some surgery
because frankly I don't know what % my insurance actually covers and cannot
get a straight answer from the surgery center.
|
Re: Cables for GE Mastr II S3V225UAUHA
Amplifiers consume DC power. They don't consume RF. The DC current being
pulled by an amplifier operating an emission that lacks any amplitude
variation (such as FM) will pull the same amount of current at any point in
time.
What about a class C amplifier used in FM? That's what I was talking about. While the RF devices are only conducting during a portion of the AC waveform cycle, the collector/drain choke and all of the other filtering (capacitors, inductors) inside the amplifier result in a constant DC current draw from the power supply. That same filtering is what keeps the RF going out the antenna jack rather than causing all of the external DC wiring to radiate RF. In a nutshell, the amplifier as a whole isn't "pulsing" DC from the power supply, it's sucking electronics from the power supply at a constant rate in the case of FM, whether it's class A, B, AB, C, or whatever. --- Jeff WN3A
|
Re: Cables for GE Mastr II S3V225UAUHA
What about a class C amplifier used in FM?
Joe
toggle quoted message
Show quoted text
On 9/22/2018 9:30 AM, 'Jeff DePolo' jd0@... [Repeater-Builder] wrote:
Amplifiers consume DC power. They don't consume RF. The DC current being
pulled by an amplifier operating an emission that lacks any amplitude
variation (such as FM) will pull the same amount of current at any point in
time.
|
Re: Link antenna polarization
That's a great question Larry,
There is a case for polarization selection. Some of our sites here in the Southwest can have 3, 4, 5 or more duplex UHF links at once. All expected to operate free of interaction with one another. Path distances can vary from a few miles to over 150 depending on sites. 150+ mi paths are "routine" between 7,000ft+ locations, often with transmitters no greater than 10W. A path in service for 27 years was 192 mi with Scala PR-450U Paraflectors at each end, 8-10W transmitters; the north end was 9,494ft + 20ft antenna height and the southern end 8,600ft + 30ft antenna height and horizontal polarization. 24/7 fade-free operation.
Our typical practice has been vertical polarization for close paths, and long-haul paths go horizontal. The basic reasoning being these long-haul paths have narrower path margins, so the theoretical 20dB isolation through opposing polarity (real world maybe 13-15dB) is a worthy advantage. This gives that extra degree of separation from other interference, particularly any local sources at the site. Whether it provides benefit against phase distortion or other path irregularities can also be debated. Most noise & competition however, will be in the vertical domain. Even amongst shorter paths under 50 mi, we sometimes flip polarities again for the isolation if frequency spacings are tight & extra margin is needed. Your mileage may vary.
73, Matt W6KGB GRONK Radio
?
Considering a VHF repeater with a typical vertically polarized omni antenna, linked via UHF, is there a case to made for choosing either vertical or horizontal polarization for the link yagis?
de Larry VO1FOG
|
I hope this is my last post on this subject ... on my last hip replacement surgery (I've had 'em both done) my surgeon actually DID NOT KNOW what the hospital billed me.?
So I gave him a copy of the hospital's bill and the first EOB (explanation of benefits) from my insurer.
He almost fell down when he saw in writing that the hospital's total was $130,000 -- and they wrote off $99,000+ when they billed my insurance.? So THAT bill was about what a hip replacement should cost in the US, and more or less the same as for "medical tourism."?
I could have had it done cheaper in India, but I can't imagine flying around the world to get a major surgery in a third-world country (I have photos to show to anybody who believes India is otherwise), then fly 12,000 miles home and have absolutely zero recourse if something went wrong, like if the surgeon was reusing gloves to save a few rupees and had already infected nine patients with MRSA with that same pair of gloves.
In sum, your medical discussions with your doctor need to include discussions about costs, and if your doctor has no clue, then maybe your doctor needs remedial instruction or maybe you need a new doctor.
73 Jim N6OTQ
On Fri, Sep 21, 2018 at 9:42 PM, rhyolite@... [Repeater-Builder] <Repeater-Builder@...> wrote:
?
Thanks Jim. I hope it doesn't get past my giving them the "Larry David Look" and them revising the bill!
There needs to be some consumer service that reviews these bills routinely and levels the playing field for us. I have been putting off some surgery because frankly I don't know what % my insurance actually covers and cannot get a straight answer from the surgery center.
|
RFI-EMI-GUY
Ken Arck AH6LE
Matt Lechliter