Hmmm... I didn't realize the DVP has a wider IF. I gather DVP requires up to 6
Khz of audio. So now I'm thinking that this receiver is not suitable for my
busy hill (Santiago Peak). What do you think?
--
Tim
:wq
On Sep 6, 2010, at 8:17 PM, Jeff DePolo wrote:
> The SP docs show it being a DVP s
Yes, meter 4 shows the channel element is on frequency.
If by IF alignment you mean injecting 11.7 Mhz and setting meter 4 to zero, yes
I checked that. It was not far off.
--
Tim
:wq
On Sep 7, 2010, at 9:11 AM, Milt wrote:
> Is the meter 4 circuit showing that the channel element is on frequ
oard was
> the same between DVP and standard stations, so the AF circuitry should be
> the same between the discriminator and the speaker terminals.
>
> --- Jeff
>
>
>> -Original Message-
>> From: Tim Sawyer [mailto:tisaw...@gmail.com
I have tried with 3 volt meters and 2 SINAD meters: a Fluke 77, a "Sinadder 3"
(SINAD & AC voltmeter) and a HP8924c. Pretty much same results with all. That
is 20 db quieting around 0.7 uV, SINAD around 0.35. So what's the recommended
meter? Should I trust the SINAD reading and chock the quietin
wrote:
>
> 2V AC down to .2 v. AC is 20 DB quieting
> John VE3AMZ
> - Original Message -
> From: Tim Sawyer
> To: Repeater-Builder@yahoogroups.com
> Sent: Monday, September 06, 2010 3:48 PM
> Subject: Re: [Repeater-Builder] Micor UHF Sensivity
>
> I'm gett
In that spirit. Going from 80 to 100 watts is 0.97 db better. That's probably
not an improvement your users will notice. When one considers what a pain it is
when the PA dies, it might not be worth it. Just my 2 cents but I think you're
better off leaving the amp at 80 watts.
--
Tim
:wq
On Sep
Yea, I think 20 db quieting is more like 0.175 uV 12 db SINAD.
--
Tim
:wq
On Sep 6, 2010, at 12:52 PM, John J. Riddell wrote:
> 2V AC down to .2 v. AC is 20 DB quieting
I'm getting about 0.35 for 12 db SINAD. But that looks about 10 db quieting to
me. What I typically do is open the squelch with no signal and set the volume
to 2 Vac then crank up the signal to 0.2 vac. Isn't that 20 db, or am I missing
something?
--
Tim
:wq
On Sep 6, 2010, at 10:46 AM, Eric L
Eric,
It's 0.72 microvolts. Not totally dead, just a bit numb.
--
Tim
:wq
On Sep 6, 2010, at 10:24 AM, Eric Lemmon wrote:
> Please confirm that you measured the sensitivity as 0.72 millivolts, or 720
> uV
I have a Micor base that was manufactured in the ham band. Model is
C64RXB3196A-SP71. The receiver model number is TRE1241A-SP10 (420-450 Mhz). It
came with 4 channels all tuned up and on frequency in the ham band. But the
receiver is sensitivity is .72 mv for 20 db quieting on the best channel
Same thing but my fingers learned :wq too many years ago to retrain I even
type it in my GUI editors... duh!
--
Tim
:wq
On Sep 4, 2010, at 10:10 AM, Will Gwin wrote:
> try:
> :x
Indeed, long live vi. I do have a pass cavity between the Micor circulator and
the duplexer. I'm not sure where the other IM products are just yet. I'm
sometimes hearing a pager. Once I heard what I suspect is Orange County Red
Cross on 462.9875... still confirming this. I hear the drip from 147
I'm looking for a UHF circulator to buy (or borrow). I have a mix that involves
our transmitter but I'm not sure it's in our transmitter. We have a Micor
repeater with the built in circulator but some feel an outboard two port is
required for our nasty hill. It would be good if I could test one
e 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 bearing solder if you
>> can f
e 2% silver bearing solder if you
> can find it.
>
>
> On Wed, Aug 25, 2010 at 1:27 PM, Tim Sawyer wrote:
>
>
> 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
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 UHF
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
a
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 wrote:
&g
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, M
pur. It's likely
> down far enough that it's legal, too. If that is the case, the only
> thing that will solve it is putting a filter on its TX to notch your
> repeater RX frequency (good luck getting that to happen if it's not on
> the same site - and often if it is on th
you, it
> might be meeting spec but the low level grundge could be causing you
> problems.
>
> Milt
> N3LTQ
>
> Quoting Tim Sawyer :
>
> > I'm looking at the pager freq with the SA. The dev looks wide to me.
> > I see about 15 Khz peak to peak. Is that norm
that show 5 Khz dev.
--
Tim
:wq
On Aug 21, 2010, at 12:18 PM, MCH wrote:
> 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&
-
> > From: Repeater-Builder@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
> >
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.
here 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.
--
Tim
:wq
On Aug 21, 2010, at 9:18 AM, Matthew Kaufman wrote:
> Tim Sawyer wrote:
>>
>>
>> It seems to pick up most of the page. Occasiona
o it when you hear it on your input?
>
> Might also be worth putting the Spectrum Analyzer on your input to see
> if you can see it drifting through the frequency - or drifting onto it.
>
> Joe M.
>
> Tim Sawyer wrote:
> > Another tidbit about this problem is that it'
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?
-
> From: "MCH"
> To:
> 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 wr
That's how I found 157.74. We're going back up on Tuesday to look some more.
--
Tim
:wq
On Aug 21, 2010, at 4:52 AM, Joe wrote:
> I've had luck finding these kinds of problems by bringing a spectrum
> analyzer to the site and connecting it to an antenna. I look at
> 10-20Mhz sections of the sp
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, 2010, at 7:46 PM, MCH wrote:
>
> > Could be a spur. Can you hear any other audio with the page? (ever)
> >
> > Joe M.
>
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, 2010, at 7:46 PM, MCH wrote:
> Could be a spur. Can you hear any other audio with the page? (ever)
>
> Joe M.
>
&
I'll watch those. How did you calculate them?
--
Tim
:wq
On Aug 20, 2010, at 5:38 PM, MCH wrote:
> Most likely suspects would be 151.140 and 170.940 MHz.
>
> Joe M.
>
> Tim Sawyer wrote:
> > I have paging intermod from 157.740 Mhz. My receiver is on 144.540 Mhz. I
t into the math, an important question that needs to be
> >> answered
> >> is whether or not this mix occurs when your repeater transmitter is
> >> unkeyed.
> >>
> >>
> >> --- Jeff WN3A
> >>
> >> > -Original Message---
I have paging intermod from 157.740 Mhz. My receiver is on 144.540 Mhz. I'm
100% sure there is another transmitter involved in the mix because sometimes
the pager is transmitting and I have no interference.
I have an intermod calculator program but it wants all the known transmitters
and the
Sorry, not trying to propagate crap. I was just trying to be helpful and didn't
want him to make maters worse. Thanks for your recommendations.
--
Tim
:wq
On Aug 12, 2010, at 6:51 AM, Mark Tomany wrote:
> It's amazing that so many people have the time on their hands to be able to
> propagate al
Was your machine on while you were away? If so you may have gotten a virus or
spyware. Sounds like your wife got it too. Spamers like to infect machines just
to get control of them for sending spam. The really bad news is that most free
spyware removal software is spyware itself. A really good P
Hey John,
All you have to do is edit the configuration file. You see the location of the
configuration file when DOSBox starts. There are pretty plain comments in there
as to how to set it up. Going from memory it was something like this:
serial1 = directconnect realport:com1
--
Tim
:wq
On Au
Is there a write up on the procedure somewhere or could you explain it here?
--
Tim
:wq
On Aug 9, 2010, at 10:20 AM, skipp025 wrote:
> 3. Repeater Pre-selector Alignment. How did the Dealer
> align the receiver front end? Most people use the
> "peak for max signal" method and that's not the bes
nd one for RX, then you
> need the Motoroal RICK to make them work.
>
> Have a great weekend.
>
> Butch, KE7FEL/r
>
> On Fri, Aug 6, 2010 at 3:46 PM, Tim Sawyer wrote:
> Oh, sorry Butch. I was asking James about the CDM radios.I know the Micor's
> are 7x24x36
How about duty cycle? Do you think this set up would transmit 7x24?
--
Tim
:wq
On Jul 28, 2010, at 7:46 PM, James Adkins wrote:
> I am using the Motorola CDM series of radios for 420-425 MHz links from
> voting sites. They make a low-split UHF split that covers 403-470 MHz out of
> the box, n
Hello Butch,
If you have sent pictures I did not get them.
--
Tim
:wq
On Jul 30, 2010, at 9:24 PM, Glenn (Butch) Kanvick wrote:
>
> Hello Tim.
> Yes, it is the 402-430 Mhz. split radio. I have a coupleoftheMicorsandafew
> GEMastr II's.
>
> The TX is on 419.3750 and the RX is on 414.4750
>
I didn't seen any release notes on Linkcomm's site. What's new in this release?
--
Tim
:wq
On Jul 31, 2010, at 7:27 PM, Stanley Stanukinos wrote:
>
> Those of you that are running the Link DSP404 a Beta release is out version
> 5.18. I have loaded it on my controller and so far so good. The fis
What's it take to program those radios?
--
Tim
:wq
On Jul 29, 2010, at 8:45 PM, James Adkins wrote:
> I disagree on the price of the CDM's. You can get the CDM-750 (4-channel)
> for as low as $75 to $125 if you watch for them on e-bay. The CDM-1250 and
> CDM-1550 are more expensive used, but
Yes, it has a stock Motorola PL encode board. I think the noise was there
before I installed it.
--
:wq
Tim
y the desense was tremendous. It took an input signal of
> around 70 microvolts to overcome desense. I retuned it on my analyser
> and got >80dB and it worked
>
> Steve
>
> - Original Message -
> *From:* Tim Sawyer
> *To:* Repeater-Builder@yahoogroups.com
RG-8 is not good for duplex. The braid will make TX noise and get into the
receiver. Cheap antennas can make the same problem. Test into a dummy load
right at the duplexer. If no noise then you know it's the feed line and/or
antenna.
6.5 inch dia cans are big ones so you should have plenty of isol
I need to notch 145.16 out of my receiver. Do you think it would tune down
that low?
On Thu, Feb 18, 2010 at 2:25 PM, skipp025 wrote:
>
>
> Re: VHF Decibel Duplexer
>
> I should probably buy this... or at least bid on it. But I'm
> making a serious effort to revive my 12 Step Junk Ender's Progra
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