Not sure if everyone here knows what I'm talking about, but I was
given a SpectraCom Netclock/2 time frequency standard at work, and I
need the WWVB Croquet Mallet antenna for it. This is an active
antenna designed to work with the Spectracom Netclock/2 product.
Those in commercial radio should
One of the biggest problems that is that the current DTV TRANSITION
channelization can easily have a VHF analog broadcasting the DTV digital on
a UHF channel. POST-TRANSITION the DTV digital could either end up back on
the existing VHF channel or on the current UHF transition channel or a new
Some parts of the world use a different format for their digital. The one in
the US tends to be very unforgiving of multipath.
Chuck
- Original Message -
So you suggest the physics in your part of the world differs from over
here? as so far digital in my country has been
Just going to UHF is a lot of the problem. Propagation is different,
especially in hilly areas like where I live. People near me have the correct
equipment, but it just plain won't pull in the new DTV channels as well.
Part of this can be attributed to any station that may not yet be at full
Also transmitter power on Digital seems to be 10db less or more.
An engineer here indicates many HDTV transmitters are 1500w
output...plus antenna system.. ERP is a lot less in most cases.. Said
engineer indicated the industry may be going to push for 6kw nozzle
power after all is up and
JOHN MACKEY wrote:
If the digital is on a very different frequency, then the frequency
change is a reason why digital reception may be problematic. For
example, if you are using a VHF antenna to try to receive
a UHF digital signal, that will be problematic.
I should be able to use any normal
They are plastic but if the other components are in metal boxes it may work
out ok.
73 de
Morris KI4IUA
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
buil...@yahoogroups.com] On Behalf Of Eric Lemmon
Sent: Sunday, February 22, 2009 11:27 PM
To:
Only if they are on RF channel 7 after the switch. Some stations wanted
to keep their identity, such as Channel 2, New York City. When they
switch to HDTV they may call themselves Channel 2-1 but their RF
frequency may be 33 or something else. Their Virtual Channel will be
2-1, but the RF
Joe wrote:
Only if they are on RF channel 7 after the switch.
Channel 7 is Channel 7. What it shows on the screen is meaningless.
wd8chl wrote:
I should be able to use any normal TV antenna. If it works on analog Ch
7, for instance, it should work on digital ch 7. Period. If it doesn't,
Dynamic multipath interference, in which the delay and magnitude of
reflections are rapidly changing, is particularly problematic for digital
reception. While this just produces moving and changing ghost images for
analog TV, it can render a digital signal impossible to decode. The
8VSB-based
There's a ton more reading on the subject. Here's a starting point where
you'll see the different standards for digital broadcast worldwide. Bottom
line, if you have a STRONG digital signal, you'll be OK. Anything less, then
all bets are off. That's not to say it won't work, it just becomes
At 21:19 2/22/2009, wd8chl wrote:
Virtually everybody I have talked to has had nothing but problems with
DTV. Invariably they get fewer channels, and stations that are good to
excellent in analog can frequently be unwatchable in digital. To see a
digital as reliably as an analog is the exception,
At 07:46 2/23/2009, Chuck Kelsey wrote:
if you have a STRONG digital signal, you'll be OK. Anything less, then
all bets are off. That's not to say it won't work, it just becomes
unpredictable.
Which shows again something that has been true all along, as hams
well know: Spend your $$$ on the
At 07:46 2/23/2009, Chuck Kelsey wrote:
if you have a STRONG digital signal, you'll be OK. Anything less, then
all bets are off. That's not to say it won't work, it just becomes
unpredictable.
Which shows again something that has been true all along, as hams
well know: Spend your $$$ on the
From: Dave Gomberg da...@wcf.com
To: Repeater-Builder@yahoogroups.com; Repeater-Builder@yahoogroups.com
Sent: Monday, February 23, 2009 8:53:02 AM
Subject: Re: [Repeater-Builder] Somewhat OT - How to make HDTV *really* work
At 07:46 2/23/2009, Chuck Kelsey
There's the rub.
People had TV that they could watch, that now goes away, forcing them to pay
for cable or dish.
Chuck
- Original Message -
Which shows again something that has been true all along, as hams
well know: Spend your $$$ on the antenna.For UHF you are much
better
Huh? Maybe you're saying this, but out local CH 2 is DTV CH 25, but
after the CH 25 signal is found, it is entered as CH 2 again even though
the RF is on CH 25.
I agree with CHL - two signals on CH 7 (or any channel) should have the
same coverage from the same antenna either analog or digital.
Guess you haven't talked to me. Mine's working great here. more channels on
rabbit ears than ever.
No, I'm not kidding.
What this has got to do with REPEATERS I have no idea though. but I can make
a guess or a suggestion that would put it back on-topic:
Perhaps (just like in
If it does take that long, then we're a country full of idiots, who probably
need to watch less TV and read more books anyway.
:-)
Nate WY0X
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Milt
Sent: Monday, February 23,
You realize that the channel displayed on the TV is a data element, and
has nothing to do with the actual RF frequency the station is transmitting
on in DTV, right?
Example: Here in Denver, CBS is moving permanently off of Channel 4 VHF
Low, to a Channel 30's range UHF frequency, and not going
Ebooks right?
=]
Chris
Kb0wlf
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Nate Duehr
Sent: Monday, February 23, 2009 1:54 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Somewhat OT - How to make
Your local analog channel 7, which has been using 174-180 MHz, sets up its
digital transmitter on 33, but the screen still says 7-1. So what you're
calling digital channel 7 is now 584-590 MHz. No change in antenna
performance should be expected? How is that just a change in modulation type?
I
Or a converter.
Not too much different than what's being done to Land Mobile, eh?
Joe M.
Chuck Kelsey wrote:
There's the rub.
People had TV that they could watch, that now goes away, forcing them to pay
for cable or dish.
Chuck
- Original Message -
Which shows again
Nate Duehr wrote:
You realize that the channel displayed on the TV is a data element, and
has nothing to do with the actual RF frequency the station is transmitting
on in DTV, right?
Paul Plack wrote:
Your local analog channel 7, which has been using 174-180 MHz, sets
up its digital
Reminds me of when the CB'ers in town ask me how many channels my ic-7000
has.
Harsh
=]
Chris
Kb0wlf
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of wd8chl
Sent: Monday, February 23, 2009 2:48 PM
To:
Don't get me going on digital, public safety two-way. Another nightmare.
Chuck
WB2EDV
- Original Message -
From: MCH m...@nb.net
To: Repeater-Builder@yahoogroups.com
Sent: Monday, February 23, 2009 3:39 PM
Subject: Re: [Repeater-Builder] Somewhat OT - How to make HDTV *really* work
This is to be expected from a country that managed to vote George W bush
into power twice really.
You'd have thought you'd have discovered UHF TV a long time ago, like
back in the 70s, like we did in the UK.
We have pretty much complete coverage (even in hilly areas) with UHF
transmitters
Gordon
You know something pal? Your rants from god knows where attacking our
country, and our presidents and voters are not appreciated. With all our
problems, and we admit we have plenty, the US still remains the best place
on this planet to live. So zip it with the political commentary.
It's more confusing than that. In the HDTV world there is RF channel 7
and Virtual channel 7. They may or (probably) may not be the same
frequency.
Joe
wd8chl wrote:
Channel 7 is Channel 7. What it shows on the screen is meaningless.
DTV channel numbers are relatively meaningless, it's the frequency that
counts.
Chris
N9LLO
In a message dated 2/23/2009 5:08:41 P.M. Eastern Standard Time,
wd8...@gmail.com writes:
JOHN MACKEY wrote:
If the digital is on a very different frequency, then the frequency
change is
You've got to keep in mind the population densities here - all spread out.
If we were talking about trying to blanket only 94,000 square miles of land,
like the size of the UK, we probably wouldn't have any coverage difficulties
either. That's about the size of the state of Michigan.
Chuck
Each state is just like it's own country anyway - it's own laws, taxes, etc.
Don't see why organising some radio transmitters seems like such a big
deal - apart from that the US never made the jump to UHF, and buy the
sounds of it, hasn't given itself proper preparation for Digital TV either.
To: Repeater-Builder@yahoogroups.com
From: n...@natetech.com
Date: Mon, 23 Feb 2009 12:53:32 -0700
Subject: RE: [Repeater-Builder] Somewhat OT - How to make HDTV *really* work
If it does take that long, then we're a country full of idiots, who
probably
All of this talk about DTV is irrelvent..because TV IS ONLY A FAD and
IT WILL NEVER LAST !
Or at least that's what they said when it came about ...way back then.
Just a little humor for the day .
Ya'll have fun.
Mike
- Original Message -
From: Barry
To:
How many more times do we have to read the same post?
In a message dated 2/23/2009 3:43:48 P.M. Pacific Standard Time,
wd8...@gmail.com writes:
JOHN MACKEY wrote:
If the digital is on a very different frequency, then the frequency
change is a reason why digital reception may be
Gordon 'Yeti' wrote:
Each state is just like it's own country anyway - it's own laws, taxes, etc.
Don't see why organising some radio transmitters seems like such a big
deal
What you are failing to recognize, is that coordination of adjacent
states, channels, frequencies is a necessity
Digital Channel 7 may NOT be the same as Analog Channel 7. It is the
frequency they are using that can be different.
-- Original Message --
In a message dated 2/23/2009 5:08:41 P.M. Eastern Standard Time,
wd8...@gmail.com writes:
I should be able to use any normal TV antenna. If
Hello Eric,
Thanks for the tip. Last night, the PA failed again. I went to the
site and found that the problem is in the 10 watt PA stage, possibly the
IC chip or the power control transistor. I brought it home and will
look at it in more detail. The strange thing was that it came back to
I had one once that the power control IC seemed to be doing strange things.
When we looked at it REAL closely, we noticed that the plastic case around
the IC was bulged and split at the top -- best estimate was that it was
lightning damage.
Very hard to see at the site, easy on the workbench
Be suspicious of the power control pot first.
Chuck
WB2EDV
- Original Message -
From: Joe k1ike_m...@snet.net
To: Repeater-Builder@yahoogroups.com
Sent: Monday, February 23, 2009 7:29 PM
Subject: Re: [Repeater-Builder] MASTRII 100 watt PA question
Hello Eric,
Thanks for the tip.
Does anybody have the part number for a Micor mobile connector (with
backshell) handy?
Is there another good source for these, or should I go directly to Motorola?
I'm just trying to put together a quick and dirty test harness.
73,
Mike
WM4B
Answer: All of them :)
In a message dated 2/23/2009 2:48:00 P.M. Central Standard Time,
demo...@rollanet.org writes:
Reminds me of when the CB'ers in town ask me how many channels my ic-7000
has.
Harsh
=]
Chris
Kb0wlf
**Get a jump start on your taxes. Find a tax professional
Also reminds me of when I was *DUMB STUPID* in my earlier years of CB (before
I got my ham license), and I asked on air for a radio check!
Heh heh, I became very smart after a reply came back to me: How much money can
we send you?
Don, KD9PT
- Original Message -
From:
At 09:47 2/23/2009, Chuck Kelsey wrote:
There's the rub.
People had TV that they could watch, that now goes away, forcing them to pay
for cable or dish.
Or move into civilization. It's all your own choice
Or live without TV, lots of folks are opting for that.
And at the prices they are
I always answer, Mine's right here.
:-)
Nate WY0X
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Don Kupferschmidt
Sent: Monday, February 23, 2009 6:36 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Somewhat OT -
There was a problem in Florida with this. Channel 6 analog moved to UHF DTV
and kept channel 6-1. the new channel 6 DTV apparently put themselves up as
6-1 (supposed to be a UHF channel number). Confused a lot of receivers for a
while.
Gerald Pelnar
McPherson, Ks
- Original Message -
Mike,
The radio-end connector is assembly 1V84307A89, which comprises three major
components, as follows:
37-contact connector 9C84086B01
Front Housing 15D84044C01 or 15D84278A01
Rear Housing 15D84045C01 or 15D84279B01
Unfortunately, all five of the above parts are NLA from Motorola. Rather
On Mon, 23 Feb 2009, Don Kupferschmidt wrote:
Also reminds me of when I was *DUMB STUPID* in my earlier years of
CB (before I got my ham license), and I asked on air for a radio
check!
We still hear those today:
Am I making it in?
--
Kris Kirby, KE4AHR
Disinformation Analyst
Thanks Eric!
73,
Mike
WM4B
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon
Sent: Monday, February 23, 2009 9:23 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Part Number for Micor Mobile
What channel are they actually on?
Joe M.
Gerald Pelnar wrote:
There was a problem in Florida with this. Channel 6 analog moved to UHF DTV
and kept channel 6-1. the new channel 6 DTV apparently put themselves up as
6-1 (supposed to be a UHF channel number). Confused a lot of receivers for a
the new station is on 6 but supposed to ID with a UHF channel number.
What channel are they actually on?
Joe M.
Gerald Pelnar wrote:
There was a problem in Florida with this. Channel 6 analog moved to UHF
DTV
and kept channel 6-1. the new channel 6 DTV apparently put themselves up
Way off topic.
One comment then everyone please drop this thread?!?!
In the '70's, you could ask for A Radio Check any time, on any channel, and
someone would come back with their location, (10-20), signal
I have a Micor power supply, that stopped working. I removed the power supply,
currently no load on the bench.
Back plane fuse - OK
F3 - 13.8v fuse - OK,??? 0vac,? Voltage 4.7vdc before F3
F2 - 9.6v fuse - OK,? 0vac,? Voltage 2.2vdc before F2
F1 10 amp. opens if left powered on. I am able to
Is this the reason for the move to UHF? Back when I lived in the city I
never really saw much/any 'ghosting' on UHF stations, but horrible ghosting
on some VHF (all the transmitters were within a couple miles of each other,
so it wasn't an issue of transmitter/receiver site). Seems like if the
Jim,
It took me a while to figure out what you have. TLN5123B is not the model
of the power supply; it is the part number of the
Chassis and Hardware Kit in a TPN1110B Power Supply.
If your power supply blows the 10 ampere fuse F1 with no load connected to
TB1 and both F2 and F3 pulled, you
I agree I have no idea what this has to do with repeaters, but with a good
received you can receive a lot more. My parents live in this town called
Middle-of-Nowhere, Michigan. Analog TV is horrible, few channels and all
snow. DTV, using the digital receiver in the TV they get no less than 12
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