Here's the latest: We went up to our site yesterday. We added a lighting
arrestor to the receive antenna. We grounded the chassis/rail/cabinet as it was
only grounded via the power cord previously. Didn't expect this to fix the
paging problem, it just needed to be done.
I did find a loose
I've seen this before on Wacom BpBr duplexers. Remove the coupling loop from
the cavity and re-solder the connectors. Use 2% silver bearing solder if you
can find it.
On Wed, Aug 25, 2010 at 1:27 PM, Tim Sawyer tisaw...@gmail.com wrote:
Here's the latest: We went up to our site yesterday. We
This is a couple of pass cavities, not a duplexer. Do the band pass cavities
have the same problem?
--
Tim
:wq
On Aug 25, 2010, at 1:32 PM, DCFluX wrote:
I've seen this before on Wacom BpBr duplexers. Remove the coupling loop from
the cavity and re-solder the connectors. Use 2% silver
By the way, the Wacom model number is WP-430-2.
--
Tim
:wq
Begin forwarded message:
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
This is a couple of pass cavities, not a duplexer. Do the band pass cavities
have the same problem
the joint.
On Wed, Aug 25, 2010 at 2:17 PM, Tim Sawyer tisaw...@gmail.com wrote:
By the way, the Wacom model number is WP-430-2.
--
Tim
:wq
Begin forwarded message:
*
*
*To: *repeater-buil...@yahoogroups.com
*Subject: **Re: [Repeater-Builder] Re: Intermod Calculation*
This is a couple
We also had a problem with a 454 pager.
Quintron with a 1/4 k amp.
Only one in the metro area had a spur, but that one traveled as the PA cage
changed temperature.
Got a hold of the paging company, and they turned each one off until we saw the
spur go away.
Final tube had been replaced and not
@yahoogroups.com
Sent: Friday, August 20, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the beginning is
missing
-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
I'm in Huntington Beach.
--
Tim
:wq
On Aug 20, 2010, at 8:52 PM, Mike Besemer (WM4B) wrote:
Tim,
Where are you located?
73,
Mike
WM4B
_
From: mailto:Repeater-Builder
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim Sawyer
Sent: Saturday, August 21, 2010 9:37 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Another tidbit about this problem is that it's clean
, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the beginning is
missing or it will get just the very end. It always
I'm not sure what you mean by grungy. What are you getting at?
--
Tim
:wq
On Aug 21, 2010, at 6:59 AM, MCH wrote:
Does it have a 'grungy' sound to it when you hear it on your input?
- Original Message -
From: Tim - WD6AWP tisaw...@gmail.com mailto:tisawyer%40gmail.com
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
Sent: Friday, August 20, 2010 7:27 PM
Subject: [Repeater-Builder] Re: Intermod Calculation
It occurs whether
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the beginning is
missing or it will get just the very end. It always seems to drop at
the same time as the page.
Does the repeater run CTCSS on the input? If so, is the behavior the
same if CTCSS is off? (CTCSS might
Many times (but not all), there will be a grungy sound with the spur.
Think of a very loud 60 cycle hum.
And 15 kHz is higher than normal. I think the typical shift is 5 kHz
(+/- 2.5 kHz) if we are talking about digital paging. Analog might be 15
kHz, as the bandwidth limit would be 16 kHz.
Yes the repeater has CTCSS but I turn it off for testing. When on the CTCSS
will false but that's not what I'm talking about when I say that the repeater
sometimes keys up after the beginning of the page.
I'm going to take another repeater which has a different 1st IF up and test
with just
I haven't noticed a hum. There's more of a scream on it.
It's POCSAG. Is that analog?
The dev is basically 15 Khz but there is, what I going to call splatter that is
like 30 Khz.
--
Tim
:wq
On Aug 21, 2010, at 10:14 AM, MCH wrote:
Many times (but not all), there will be a grungy sound
, August 21, 2010 1:33 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
I haven't noticed a hum. There's more of a scream on it.
It's POCSAG. Is that analog?
The dev is basically 15 Khz but there is, what I going to
call splatter
on the paging
transmitter, at least that's what I'd be looking at.
Chuck
WB2EDV
- Original Message -
From: MCH m...@nb.net
To: Repeater-Builder@yahoogroups.com
Sent: Friday, August 20, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur
Before you said 15 kHz P-P (IOW bandwidth). Now you're saying 15 kHz
deviation. 15 kHz deviation would be way too high.
Joe M.
Tim Sawyer wrote:
I haven't noticed a hum. There's more of a scream on it.
It's POCSAG. Is that analog?
The dev is basically 15 Khz but there is, what I
@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim Sawyer
Sent: Saturday, August 21, 2010 1:33 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
I haven't noticed a hum. There's more of a scream on it.
It's POCSAG
My service monitor (HP 8924C) has both a deviation meter and an oscilloscope to
display the demodulated audio. Both the numbers on the dev meter and the peak
to peak on the scope read about 15 Khz.
I see another paging system (152.84) that shows the same 15 Khz dev, and a
bunch of other ones
20, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the beginning is
missing or it will get just
There is something wrong with your SM, then, as it should not show a
deviation of 15 kHz on a signal that is 15 kHz P-P unless it's only
deviating in one direction from the carrier.
The +/- 4 kHz sounds about right. But, it should be centered around the
carrier frequency of 157.740 (Or, on
: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the
beginning is
missing or it will get just the very end. It always seems
The meter reads P-P just like the scope. I generally set dev with the meter and
confirm it on the scope. But your right, this really doesn't matter. I was just
making sure they didn't have the dev out of wack and from what I gather here
they don't.
We're going up Tuesday with another repeater
Apparently, from what the tech said, this one is slated to go off the air in
coming months, too. But I can't wait that long as our repeater is basically
useless at this point. And you never know, it might take them longer than that
to actually kill it.
--
Tim
:wq
On Aug 21, 2010, at 1:02 PM,
We had a pager spur problem with our repeater (no pl). The problem would
come and go. We determined it happened mostly with time of day (outside
temperature). Sometime it was just a short 1 second event and sometimes it
would hold for a bit more (maybe 2 -5 sec). We setup a satellite multimode
- Original Message -
From: MCH m...@nb.net
To: Repeater-Builder@yahoogroups.com
Sent: Friday, August 20, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote
--- In Repeater-Builder@yahoogroups.com, Tim Sawyer tisaw...@... wrote:
Basically, there is one controller for both the 929.0375 and the 157.74
transmitters. They also have two other transmitters on 929.6375 and 931.6625.
Are the 929.0375 and 929.6375 transmitters at the same site as
If that was the issue I'd think every other two meter repeater on the hill (and
there are many) would have the my same problem. But they don't.
--
Tim
:wq
On Aug 21, 2010, at 7:27 PM, larynl2 wrote:
--- In Repeater-Builder@yahoogroups.com, Tim Sawyer tisaw...@... wrote:
Basically,
On Aug 21, 2010, at 6:38 PM, men...@pa.net wrote:
How long has the pager been in operation?
If it has been there for a long time either something changed in the
pager setup or something changed on your end.
We've been having many problems at the site (including a broken tower cross
arm,
It occurs whether or not the repeater transmitter is keyed.
--- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote:
Before we get into the math, an important question that needs to be answered
is whether or not this mix occurs when your repeater transmitter is unkeyed.
@yahoogroups.com
Sent: Friday, August 20, 2010 7:27 PM
Subject: [Repeater-Builder] Re: Intermod Calculation
It occurs whether or not the repeater transmitter is keyed.
--- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote:
Before we get into the math, an important question that needs
: [Repeater-Builder] Re: Intermod Calculation
It occurs whether or not the repeater transmitter is keyed.
--- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote:
Before we get into the math, an important question that needs to be
answered
is whether or not this mix occurs
- WD6AWP tisaw...@gmail.com mailto:tisawyer%40gmail.com
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
Sent: Friday, August 20, 2010 7:27 PM
Subject: [Repeater-Builder] Re: Intermod Calculation
It occurs whether or not the repeater transmitter is keyed
@yahoogroups.com
Sent: Friday, August 20, 2010 10:46 PM
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
Could be a spur. Can you hear any other audio with the page? (ever)
Joe M.
Tim Sawyer wrote:
It seems to pick up most of the page. Occasionally the beginning is
missing or it will get
-Builder%40yahoogroups.com
Sent: Friday, August 20, 2010 7:27 PM
Subject: [Repeater-Builder] Re: Intermod Calculation
It occurs whether or not the repeater transmitter is keyed.
--- In Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com, Jeff DePolo j...@...
wrote
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
Sent: Friday, August 20, 2010 7:27 PM
Subject: [Repeater-Builder] Re: Intermod Calculation
It occurs whether or not the repeater transmitter is keyed.
--- In Repeater-Builder
, August 20, 2010 11:49 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Intermod Calculation
No, I never, ever have heard any other audio. But there is time when I don't
hear it at all... as if it takes two signals to occur.
--
Tim
:wq
On Aug 20
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