Re: [Repeater-Builder] NHRC-2 PC Board Art

2008-05-28 Thread Paul Guello 
You used to be able to get just the board with the programmed PIC from NHRC.  I 
think FAR cicuits also used to have the boards.  It might be worth checking.  
The websites are NHRC.net and farcircuits.net.  Paul, kb9wlc


- Original Message 
From: Keith Dobbins [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, May 28, 2008 9:23:06 PM
Subject: [Repeater-Builder] NHRC-2 PC Board Art


I'd like to build the NHRC-2 repeater controller, I have all the parts 
except for a PC board, before I try and do my own board, is the mask to 
make your own anywhere? I'd do the kit from NHRC but I already got all 
the parts I need in stock vs getting the parts in the kit.I dunno if 
the board is available by itself or not. If I can't find it I figure 
I'd do one up from the schematics for what I need. Trying to get a 
backup controller for our 146 repeater and a new controller for our 440 
repeater built. Thanks for any info or assistance.

Keith Dobbins KC8RFW
Repeater Technician
W8TAP Repeater Group
Parkersburg, WV 26101

Re: [Repeater-Builder] SPARE PARTS FOR YAESU RADIOS

2008-02-01 Thread Paul Guello 
Did you try contacting Yaesu directly?  I have ordered parts directly from them 
in the past.  
This is from their website:
For customer service, technical support or parts, please call 
714-827-7600.

Paul KB9WLC

Peter P J [EMAIL PROTECTED] wrote:   I am in need 
of few spare parts for my Yaesu VHF equipments.  After the 
 merge to Standard Vertex, our old YAESU dealer is not able to provide 
 me any spare parts.
 
 Immediate need is LCD display units for FT 2500 and 2600.
 
 Can any of our readers provide me a source, for international purchase?
 
 PETER VU2PJP
 
 
 
   

   
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Re: [Repeater-Builder] Scotchkoat

2008-01-07 Thread Paul Guello 
Try some citrus based solvent.

Scott Zimmerman [EMAIL PROTECTED] wrote:  
 Use Scotchkoat from 3M  to seal the antennas but don’t get it on you, it 
sticks to you as well as it  does the antennas.
  
 Any one know of any solvents that can be used to remove it??  I have some on 
some tools and a spot on my car upholstery (I know, I know)  
  
 Scott
  
 Scott Zimmerman 
Amateur Radio Call N3XCC
612 Barnett  Road
Boswell, PA 15531

- Original Message - 
   From:Paul Finch
   To: Repeater-Builder@yahoogroups.com
   Sent: Sunday, January 06, 2008 9:46PM
   Subject: RE: [Repeater-Builder] NewDB-224 w/water cooled phasing 
harness???
   

  HelloAll,

   From what I have seenthe quality is the same but I have been preaching 
on this board and others youcan’t install a DB antenna without sealing 
every screw, bolt, plastic knot,connector and anything else that could leak 
water.  Besides that you musttake all connections to the harness and 
tighten all screws before you seal it. Once you do that the antenna may 
possibly outlive most people on thisboard.  I have a DB-410 in downtown 
Fort Worth that I installed in 1976 and itstill has flat SWR.

   Use Scotchkoat from3M to seal the antennas but don’t get it on you, it 
sticks to you as well asit does the antennas.

   Paul


 
-
   
   From:Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED]On 
Behalf Of SteveAllred
Sent: Sunday, January06, 2008 7:40 PM
To:Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] NewDB-224 w/water cooled phasing harness???


  YES!

  Recently replaced a new DB-224 that had wicked waterin the molded 
harness section and ended up inside the connector. Uponreceiving a 
replacement antenna, we sealed the heck out of the harness withvapor wrap 
before installation. This one seems to be holding up for now, fornow knock 
on wood. The local PD did not like a water loggedantenna! 

   

  What happened to DB's quality? Upon inspection of theold one, it 
seems as though the glue that was suppose to be keeping thewater out was 
not only sparsely applied but was also very brittle. Anymovement of the 
harness would crack the glue resulting in a potential placefor water to 
enter the harness.

   

  Steve / K6SCA

  

kc4wdi[EMAIL PROTECTED]wrote:

  We have installed several new db-224  recently. This 
particular antenna 
was inverted and has been in service  less than 6 months.

While doing a routine test, I noticed the ref.  power was a little 
high. The longer the TX was up, the lower the ref.  power got; which 
typically indicates water in a connector or  cable.

We found water in the connector at the center of the antenna.  It DID 
NOT come through/around the weather seal!

The harness was  carefully disassembled. Water (and corrosion) was 
found in the molded  junction above the center connection.

Has anyone seen this before?  Has the quality slipped that much on 
the new db-224's?

Any  feedback is greatlyappreciated!




  
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Re: [Repeater-Builder] New DB-224 w/water cooled phasing harness???

2008-01-06 Thread Paul Guello 
If by inverted you mean the antenna is mounted upside down then the drain holes 
for condensation are pointing up instead of down.  And the water trapped inside 
would not be able to drain out.  Paul

kc4wdi [EMAIL PROTECTED] wrote:   We have 
installed several new db-224 recently. This particular antenna 
 was inverted and has been in service less than 6 months.
 
 While doing a routine test, I noticed the ref. power was a little 
 high. The longer the TX was up, the lower the ref. power got; which 
 typically indicates water in a connector or cable.
 
 We found water in the connector at the center of the antenna. It DID 
 NOT come through/around the weather seal!
 
 The harness was carefully disassembled. Water (and corrosion) was 
 found in the molded junction above the center connection.
 
 Has anyone seen this before? Has the quality slipped that much on 
 the new db-224's?
 
 Any feedback is greatly appreciated!
 
 
 
   

   
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RE: [Repeater-Builder] WYGG (RF Radiation Hazard Warning Signs?)

2008-01-03 Thread Paul Guello 
The FCC data base lists their ERP as 1.5KW and antenna height as 26 meters 
AMSL. 

http://www.fcc.gov/fcc-bin/fmq?list=0facid=19867


n9wys [EMAIL PROTECTED] wrote:   I did some 
checking on station WYGG. 
  
 1) They are licensed for 100W; they were operating at 240W.  
 2) They are licensed for an antenna height of 15 meters (~46 feet).  They
 were operating at almost *3 times* that height (29.9 meters in excess).  
 3) They had no logs available; 
 4) There was no designated chief engineer; 
 5) The station manager didn't have a clue.
 
 I think they're lucky to have been able to keep their license - then again,
 maybe the FCC allowed them to keep it because they know that this is a
 known-good revenue stream...
 
 Mark - N9WYS
 
 
 
   

   
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Re: [Repeater-Builder] Spectrum Communications SCR 77 UHF repeater

2007-08-23 Thread Paul Guello 
If I remember right the prom they used had more than
one section and so could be re-programmed.  Just one
jumper needed to be changed to address the new
section.
Paul

--- Ron Wright [EMAIL PROTECTED] wrote:

 Tim,
 
 If the IDer has a PROM then little can and should be
 done to go another way...a new PROM.
 
 Do you know the PROM part number???  If one reads it
 often one can determine the method used for setting
 up the ID.  Some simply use one to turn on a tong
 gen and a zero to turn off and simply clock a
 counter thur the addresses and maybe use a second
 data line output that gives a 1 or 0 when finished
 to stop.
 
 If you know the PROM type one might be able to
 program and replace.  One problem is the PROMs are
 so old they are hard to find.
 
 Depending on the PROM I might be able to help.
 
 73, ron, n9ee/r
 
 
 
 From: wd4chs [EMAIL PROTECTED]
 Date: 2007/08/23 Thu PM 02:37:49 CDT
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Spectrum Communications
 SCR 77 UHF repeater
 
   
 I am in need of or someone who knows anything about
 the CWID for a 
 Spectrum SCR-77 UHF repeater. The CWID it has now
 functions good only 
 it is not my call. From what I have read about this
 CWIDer you have to 
 have the manufacturer burn a chip for you that
 plugs into the board. 
 Is there any other way?
 
 Thanks,
 Tim WD4CHS
 
 
 
 
 Ron Wright, N9EE
 727-376-6575
 MICRO COMPUTER CONCEPTS
 Owner 146.64 repeater Tampa Bay, FL
 No tone, all are welcome.
 
 
 



   

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Re: [Repeater-Builder] tower mounts

2007-07-01 Thread Paul Guello 
Try Sabre Site Solutions
http://www.sabrecom.com/tower_components_catalog.aspx

Paul, kb9wlc

--- JOHN MACKEY [EMAIL PROTECTED] wrote:

 I need to get mounts for side mounting an antenna to
 a tower.  Who is
 supplying stuff like that now days?
 
 
 



 

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Re: [Repeater-Builder] Tower Climbing Safety and Certification

2007-06-17 Thread Paul Guello 
That link didn't work, try this one;
http://mrtmag.com/mag/radio_tower_climbingsafety_rescue/index.html

Paul kb9wlc

--- Eric Lemmon [EMAIL PROTECTED] wrote:

  Mobile Radio Technology (MRT) magazine has an
 interesting article about
 tower climbing here:
 

www.mrtmag.com/mag/radio_tower_climbingsafety_rescue/
 
 73, Eric Lemmon WB6FLY
 
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of Paul Finch
 Sent: Sunday, June 17, 2007 5:12 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Norton AntiSpam] RE: [Repeater-Builder]
 Would You Do This?
 
 Bruce,
  
 They have a practice tower at their location, it
 close to 200 feet if I
 remember correctly.  I think I have heard of them
 coming to your location
 for a price and if you have enough people to train.
  
 Paul
  
 
 
 
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of [EMAIL PROTECTED]
 Sent: Sunday, June 17, 2007 6:59 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: Re: [Repeater-Builder] Would You Do This?
 
 
 Paul
  
 Does Comtrain train you on the tower you want to be
 climbing or do you train
 on their
 own tower?
  
 Bruce
  
  
 In a message dated 6/17/2007 4:31:55 P.M. Pacific
 Daylight Time,
 [EMAIL PROTECTED] writes:
 
   
   Hello,

   Actually there are companies out there that train
 tower hands, one
 is Comtrain.  They are pretty good about it.  Anyone
 going up my tall tower
 is supposed to be Comtrained or have some kind of
 certification.

   Paul
 
  
 
 
 
 
 
 See what's free at AOL.com
 http://www.aol.com?ncid=AOLAOF0002000503 . 
 
 
 You can find it on ebaY

http://rover.ebay.com/rover/1/711-1751-2978-238/1?aid=10356774pid=2316294
 
 
 
 No virus found in this incoming message.
 Checked by AVG Free Edition.
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 Release Date: 6/17/2007
 8:23 AM
 
 
 
 No virus found in this outgoing message.
 Checked by AVG Free Edition.
 Version: 7.5.472 / Virus Database: 269.9.0/852 -
 Release Date: 6/17/2007
 8:23 AM
 
 
 
 You can find it on ebaY

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Re: [Repeater-Builder] FW: VSWR Issues

2007-05-28 Thread Paul Guello 
What you want is called an isolator.  This is a
circulator with the required RF load already attached.
 Telewave makes some that will work in the 2-meter ham
band.
http://www.telewave.com/pricelist/isolators.html

Paul kb9wlc

--- Mike Besemer (WM4B) [EMAIL PROTECTED] wrote:

 At some point in this thread, someone mentioned that
 we need to install a
 circulator or isolator to prevent damage from high
 VSWR and help eliminate
 interference problems.  What suggestions have ya'll
 got for a 30 watt
 machine?
 
  
 
 Mike
 
 WM4B
 
  
 
   _  
 
 From: Mike Besemer (WM4B) [mailto:[EMAIL PROTECTED]
 
 Sent: Saturday, May 26, 2007 10:02 AM
 To: Repeater-Builder@yahoogroups.com
 Cc: [EMAIL PROTECTED]
 Subject: VSWR Issues
 
  
 
 Greetings all,
 
 My club repeater system consists of a KRP-5000
 feeding (what we think is) a
 DB-224 mounted on a watertower at about 140'.  The
 feedline is about 170
 feet of one-inch helix.  We'd been getting some
 comments from users about
 decreased coverage, but had attributed most of them
 to the heavy foliage
 we're seeing now (we have the same issue every
 spring), but nonetheless last
 night the two of us on the technical committee went
 to the site to do some
 checking.  (As a sidebar, my background is 24 years
 USAF as an avionics tech
 and my buddy works as a radio/radar tech for the
 FAA.)
 
 At the site, a quick power check revealed the
 problem. 9 watts forward, 3
 watts back (checked from both sides of the cans). 
 The transmitter output
 should be 30 watts.  Checked the transmitter into a
 Comm Systems Analyzer
 and verified 8.6 watts from the transmitter.  So. we
 know that the
 transmitter is toasted, no doubt from excessive
 reflected power.  
 
 The next step was to put a TDR on the line. 
 Everything appeared to be okay
 up to the antenna, but the termination point
 (antenna) looked pretty ragged.
 What does a DB-224 (or similar) antenna look like on
 a TDR?  (We tried to
 print the TDR image so I could share it, but the
 printer was not
 cooperating.)  
 
 I need to add that we DO NOT have access to the
 water tower.  Previous club
 leadership pulled some fast ones on the county and
 we are forbidden from
 climbing the tower.  Whatever needs to be done, we
 must use the same crew
 the county uses and pay all costs.  Also, we're the
 only ones on the tower,
 so there is no routine maintenance done on the tower
 that we can piggy-back
 on.  Bottom line. we need to figure out what we need
 to do and have
 everything in place if we need to hire a crew to
 come out and do the work
 for us. 
 
 If I had access to the tower, I'd terminate the top
 of the hardline with a
 50 ohm load and recheck the reflected power to
 verify that the feedline is
 good.  I'd also check power at the top to see how
 much loss we had.  (The
 antenna has been up there for more years than anyone
 can remember. we
 believe that the last time it was inspected was
 1994.)  The hardline itself
 looks very good, and we inspected the antenna as
 best we could from
 ground-level with a sighting scope and could not see
 anything obviously
 mucked up.  
 
 I'm guessing that the feedline is okay but that the
 antenna is going to need
 either overhauled or replaced. and since we're going
 to have to pay for the
 rigging crew, replacing the antenna would probably
 be the cheapest route.
 
 Thoughts, suggestions?  Did we miss anything
 obvious?  Suggestions for a new
 antenna that will last as long as this one did?  I
 hate to go to the
 membership with a 'we think this is what is wrong
 and we need to spend
 money', but without access to the tower we're pretty
 much hamstrung.
 Anybody got a TDR image of a DB-224 (or similar)
 that we can use for
 comparison?
 
 Thanks in advance,
 
 Mike
 
 WM4B
 
   
 
 



   
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Re: [Repeater-Builder] Jerrold Commander IV Modulator for ATV

2007-04-29 Thread Paul Guello 
It would be simpler and cheaper to find a tuneable or
frequency agile modulator.  Jerrold, Blonder Tongue,
DX Antenna, Drake, and Olson are just a few of the
companies that make them.  I've seen them for as
little as $20.  Paul kb9wlc

--- Wallace Steinbrecher
[EMAIL PROTECTED] wrote:

 Gentlemen,
 
 I have come into possession of a Jerrold Commander
 IV video modulator 
 currently configured for UHF channel 27.  I want to
 modify this 
 modulator for ATV use at 439.25 Mhz (cable channel
 60) as the TX side 
 of an in-band repeater.
 
 The modulator module is model CVMS.  The audio
 module is model CAM and 
 the IF/Channel Converter module is model ICC-26I.
 
 Does any member of the group have experience modding
 these modulators 
 for use on ATV?  I have posted this question on some
 of the ATV boards 
 but have not received a response.  Any help would be
 appreciated.
 
 Wallace, KI4DVV
 
 


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Re: [Repeater-Builder] wanted ISD1420p Voice chip

2007-04-02 Thread Paul Guello 
I can use 2 of these too.  Paul Guello, kb9wlc

--- DCFluX [EMAIL PROTECTED] wrote:

 Looks like Digikey turned them into a special order
 item.I just checked my
 lab and for some reason I have 4 tubes of the
 ISD1420P.  I have about 60 of
 them with a date code of 0009.
 
 So I will make a Repeater-Builder list and NHRC-2
 upgrade special. A never
 before seen offer!
 
 Send me a self addressed padded envelope, with some
 anti-static foam that
 will fit a 28 pin .6 wide dip along with the qty of
 chips you need and I
 will send you some. First come first serve.
 
 Matt Krick
 3370 N. Mobile Rd.
 Golden Valley, AZ 86413
 
 Please make your reservations on list as I do not
 want anyone to be eaten by
 the spam filter.
 
 
 
 I also have some ISD2575Ps, but I don't know of
 anything that uses them off
 the top of my head.
 
 I need to get some more PICs from NHRC my self. I
 have 2 controlers that are
 just sitting here.
 



 

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Re: [Repeater-Builder] Re: 4 bay folded j pole questions

2007-03-27 Thread Paul Guello 
You may find it works OK on 2 meters.  Probably not
good enough for a repeater though.  There has been
discussions here before about extending the elements
and building new harnesses.  The harness is made up of
75 ohm and 35 ohm Vaporlock weather proof coax cut to
multiples of 1/4 wavelength.  There was an article on
the net about this by kc4fwc, one by wb0upj, and
another by kc5dgc.  Also look at Kevin's article here;
http://www.repeater-builder.com/rbtip/exposeddipole.html

Paul kb9wlc

--- chuckmf1135 [EMAIL PROTECTED] wrote:

   Thanks i found out its a Andrew dB224 -
 155-165mhz, i was hoping it
 would be in the 145mhz - 2 meter ham band range but
 it seems you cant 
 adjust this type of antenna.
 
 
 
 --- In Repeater-Builder@yahoogroups.com, skipp025
 [EMAIL PROTECTED] 
 wrote:
 
   
   The characteristic impedance of a folded dipole
 is 300 ohms. 
  
  Depends on who you ask really.  The impedance of
 what most people 
  call a classic folded dipole is about 300 ohms. 
 But measure the 
  various dipoles by Decibel and Sinclair you'll
 probably find they 
  are not all standard size dipoles.  
  
  What Decibel does to match their dipole arrays is
 nothing like the 
  method used by Sinclair. 
  
  cheers, 
  skipp 
  
   4 of them, fed in-phase, will present an
 impedance of 75 ohms at 
 the 
   feedpoint of the phasing harness, which will
 present an 
 acceptable 
   1.5:1 SWR to a 50-ohm transmitter.  As Nate
 mentioned, some 
   manufacturers build the phasing harness with
 different impedances 
 of 
   coax to transform the antenna array's impedance
 to 50 ohms.
   
   As far as frequency goes, if you're saying that
 the length of an 
   element, from the center of the top bend to the
 center of the 
 bottom 
   bend is 34 inches, it's definitely a high-band
 antenna.  The 
 larger 
   the element tubing diameter, the broader the
 frequency range the 
   antenna will cover, so you may get that to
 perform acceptably at 
 2 
   meters.  See the construction article on the
 Repeater Builder 
 website 
   at
 www.repeater-builder.com/projects/exposeddipole.html
 -  it's 
   pretty much the antenna you have.
   
   George, KA3HSW / WQGJ413
  
 
 
 
 



 

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Re: [Repeater-Builder] still looking for

2007-01-17 Thread Paul Guello 
Why not just order the basic kit from NHRC?
These are inexpensive and the rest of the parts could
be picked up from another supplier.  
Paul
--- Steve [EMAIL PROTECTED] wrote:

 Hi
 Iam still looking for a cheap NHRC controller to use
 on a preoject, Iam in the UK. If you have one please
 mail me direct with a price.
 My appologies to anyone who has offeredme one and
 had no reply, this is probably due to my spam filter
 as it will not
 asccept certain ISP,s such as MSN or earthlink,
 sorry but I
 have to do this due to huge ammounts of spam
 
 73
 
 Steve




 

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Re: [Repeater-Builder] Isolator/Circulator

2007-01-07 Thread Paul Guello 
From a previous message on this group;
Many radio communications equipment manufacturers make
isolators: EMR, Celwave, Decibel Products, Telewave,
TX-RX, and also Andrew, Connecticut Microwave, MECA,
REC-USA, and Raditek, and many more. 
Contact suppliers such as TESSCO or TALLEY for prices.

Paul kb9wlc

--- Kent Chong [EMAIL PROTECTED] wrote:

 Hello,
 
 Building a combiner now. Frequency is between
 400-520Mhz and power is 10W. Need to add
 isolator/circulator to improve the isolation.
 Anybody knows suppliers to provide this
 isolator/circulator?
 
 Best Regards,
 
 Kent Chong
 
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Re: [Repeater-Builder] Isolator/Circulator

2007-01-07 Thread Paul Guello 
From a previous message on this group;
Many radio communications equipment manufacturers make
isolators: EMR, Celwave, Decibel Products, Telewave,
TX-RX, and also Andrew, Connecticut Microwave, MECA,
REC-USA, and Raditek, and many more. 
Contact suppliers such as TESSCO or TALLEY for prices.

Paul kb9wlc

--- Kent Chong [EMAIL PROTECTED] wrote:

 Hello,
 
 Building a combiner now. Frequency is between
 400-520Mhz and power is 10W. Need to add
 isolator/circulator to improve the isolation.
 Anybody knows suppliers to provide this
 isolator/circulator?
 
 Best Regards,
 
 Kent Chong
 
 Send instant messages to your online friends
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Re: [Repeater-Builder] Bowmar Crystals Ordered, all the RX not working for GE EXEC II mobiles

2007-01-01 Thread Paul Guello 
Take a look at the spec sheet for the elements.  The
mastr ii exec elements have selected capacitors for
different frequencies.  If the new frequency is enough
of a change from the old frequency you will need to
change them.  Paul kb9wlc

--- Mathew Quaife [EMAIL PROTECTED] wrote:

 Thanks Chuck, that is what they sent me, so your
 math is just fine.  Then there must be something I
 am missing.  I can take one of the old xtals and
 they work out just fine, so I know the receivers are
 working.  Might I ask what the formula you used was?
  It's been a long time since I have calculated a
 crystal freq. so just need the formula
 configuration.

   Mathew
   
 Chuck Kelsey [EMAIL PROTECTED] wrote:
   If my hasty math is correct:
 
 144.81 low side = 14.84
 144.81 high side = 17.33
 
 434.875 low side = 16.39537
 434.875 high side = 16.521296
 
 Chuck
 WB2EDV
 
 - Original Message - 
 From: n9lv [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Monday, January 01, 2007 10:40 AM
 Subject: [Repeater-Builder] Bowmar Crystals Ordered,
 all the RX not working 
 for GE EXEC II mobiles
 
  Hope someone can help shed some light here. I
 ordered xtals from
  Bomar (3 week wait) for the GE EXEC II mobile
 radios, 6 for RX for
  144.810 and one RX of 434.875, all high side
 injection. None of them
  are working at all. At the same time I ordered tx
 xtals for the same
  radio, they all work just fine. What might I be
 missing here, or did
  they just cut them all wrong.
 
  Mathew
 
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
  
 
 
 
  
 
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Re: [Repeater-Builder] WTB: Slide rails for 19 rack mount.

2006-12-25 Thread Paul Guello 
Try ebay for rack slide rails. 
http://cgi.ebay.com/Accuride-150-Chassis-Slides-DEC-19-rack_W0QQitemZ170063543843QQihZ007QQcategoryZ20316QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
or search for item # 170063543843   
Also drawer slides are similar and may also work.
Paul kb9wlc

--- n9lv [EMAIL PROTECTED] wrote:

 Does anyone have or know where they can be
 purchased?  I am looking 
 for a way to mount my controllers on a slide out
 tray so that 
 adjustments can be made without tearing everything
 apart.  Difficult 
 part is, there is only whole mounts on the front of
 the cabinet and 
 not the rear, so they would have to be strong.  The
 controller and the 
 LDG voter is not all that heavy.  Thanks
 
 Mathew
 
 
 


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Re: [Repeater-Builder] GE Exec II, I want to make a portable repeater, is it all the same

2006-12-05 Thread Paul Guello 
I built one completely within the exec II box using a
NHRC-4 controller.  The second channel of the
controller is brought out so a second radio can be
connected as a UHF link back to the big repeater.  I
have most of the info and when I get it all together
I'll upload it to the repeater builder site.  It was
relatively easy to do.  It makes a nice 25 watt
repeater.  Paul kb9wlc

--- n9lv [EMAIL PROTECTED] wrote:

 I recently finished converting some GE Exec II's for
 crossband 
 operation.  Want I want to do is make a repeater
 from one, in the VHF 
 band.  Would everything be the same as when I did
 the crossband.  Will 
 there be any other issues that I might encounter? 
 This is going to be 
 on a VHF unit in the 147 Mhz range.  Thanks.
 
 Mathew
 N9LV
 
 
 



 

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Re: [Repeater-Builder] Wanted: 1 5/8 N-type air hardline connector

2006-11-26 Thread Paul Guello 
Try Surplus Sales of Nebraska they have some;
http://www.surplussales.com/Connectors/HardL-4.html
Paul kb9wlc


--- dvickn4ome [EMAIL PROTECTED] wrote:

 Recently our repeater site was burglarized and the
 connector along with 
 several feet of the 1 5/8 air hardline was stolen.
 (for the copper)  
 There were several other pieces of hardline also
 stolen.  I'm willing 
 to purchase a 1 5/8 N-type connector for air
 hardline.  I would 
 appreciate hearing if anyone has a connector or a
 source for one.
 
 Thanks
 Darryl - N4OME
 
 



 

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RE: [Repeater-Builder]Repeater Controller

2006-11-23 Thread Paul Guello 
Here's a link to the RC-210 that he was talking about;

http://www.ah6le.net/arcom/rc210/rc210.html

also look on ebay for item # 3092970014 

Paul kb9wlc

--- Eric Lemmon [EMAIL PROTECTED] wrote:

 Neal,
 
 You may be referring to the Pacific Research model
 RI-210 repeater
 controller for the Vertex VXR-5000 repeater.  This
 is a very capable
 controller that is made to plug into the VXR-5000,
 replacing the original
 controller.  I have one in service on my GMRS
 repeater, and it works quite
 well.  Don't buy it without the required software
 and programming cable.
 More information about this controller can be found
 here:
 
 http://www.pacres.com/products/ri-210.html
 
 It's not particularly user-friendly, but once I got
 all of the variables
 set, it's been working just fine.  Its major
 failing, which seems to be
 common to every controller on the planet, is that
 the built-in clock drifts
 so much that it is useless.  I am looking into using
 a new TAPR kit to
 synchronize the clock to GPS time... but that's a
 whole new topic!
 
 73, Eric Lemmon WB6FLY
 
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of Neal Newman
 Sent: Thursday, November 23, 2006 6:56 AM
 To: Repeater-Builder@yahoogroups.com
 Subject: Re: [Repeater-Builder]Repeater Controller
 
 Any of you guys know anything about a repeater
 controller called an 
 RC-210? or something like that.
 I see this 3 port controller all the Time on Ebay 
 Good, bad how difficult to program?
 thanks 
 Neal
 
 
 



 

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RE: [Repeater-Builder] Re: Double the gain or double the power?

2006-05-30 Thread Paul Guello 
First check the VSWR.  (it may be going up when you
add the second set of elements, the harness must be
done correctly for the VSWR to stay low)

If the VSWR is OK or things are corrected so it seems
OK then retune the duplexer using a Spectrum Analyzer
and Return Loss Bridge.  Do this with the antenna
connected so the duplexer is matched to the antenna
system.

Paul, kb9wlc

--- 'Jeff DePolo' [EMAIL PROTECTED] wrote:

  Yes I have to add a tee for the bottom half.  The
 entire 
  antenna is one complete unit 4-folded dipoles. 
 Maybe I 
  assumed and thought all the phasing harness's were
 already 
  there as I can see where the splits are on the
 coax.
 
 What kind of antenna is it?
 
  I am measuring from out of the duplexers up the
 LMR-400 cable 
  and not at the top.
 
 How long is the run of LMR400?
 
 
 -- 
 No virus found in this outgoing message.
 Checked by AVG Free Edition.
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 Release Date: 5/29/2006
  
 
 
 
 
 
  
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RE: [Repeater-Builder] Need source for RF RCA connectors

2006-05-28 Thread Paul Guello 
I had sample from Switchcraft of a nice right angle
rca plug.  I tried it in a GE mastr ii repeater and it
worked just fine.  Look for part number 3502RA.  
http://www.switchcraft.com/

Paul kb9wlc

--- Jeff DePolo [EMAIL PROTECTED] wrote:

 
 Geez, lots of discussion, but nobody answered the
 question.
 
 RF Connection (www.therfc.com) has RF-grade RCA
 males, standard solder-on
 type (no strain relief or anything).  Short center
 pin, silver plated,
 Teflon dielectric.  If you can't find them on the
 web site, call and ask for
 Joel and tell him what you need, he'll know what
 you're talking about.
 
   --- Jeff
 
  -Original Message-
  From: Repeater-Builder@yahoogroups.com 
  [mailto:[EMAIL PROTECTED] On
 Behalf Of 
  [EMAIL PROTECTED]
  Sent: Sunday, May 28, 2006 12:44 AM
  To: Repeater-Builder@yahoogroups.com
  Subject: [Repeater-Builder] Need source for RF RCA
 connectors
  
  My stock of RF RCA connectors (the ones used for
 carrying RF 
  inside GE 
  MVPs, Mastr IIs etc.) has run dry,  I haven't
 seen any at 
  our local swap 
  meets.  Anyone know where I can find these? 
 Thanks.
  
  Bob NO6B 
  
  
  
  
  
  
   
  Yahoo! Groups Links
  
  
  
   
  
  
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 


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Re: [Repeater-Builder] accepting recommendations

2006-05-07 Thread Paul Guello 
A licensed amateur radio operator would know that what
you are proposing is illegal.  
Also, the chief engineer of the radio station should
be doing the engineering, not you.
Remote broadcast regulations are covered by part 74 of
the FCC rules are very clear.  A license is required
and it is not allowed in the ham bands.
If you are serious about doing remote broadcasts you
will look at Marti radio equipment, Telos ISDN
equipment or Tieline POTS codecs.  These are just a
few examples.
It's also interesting that you are not willing to put
your name on your message.
Paul 

--- us_communications1 [EMAIL PROTECTED]
wrote:

 Good Afternoon Gentlemen,
 I am looking to build a hi-fi quality audio repeater
 to feed audio for 
 remote broadcasts of a non-commercial radio station
 which has been 
 greatly annoying, as I need a specific IF filter for
 a motorola 
 receiver a tu-540w and I have been unable to find
 the filter. In 
 addition, the chief engineer for the station has
 been completely un-
 helpful. While I am not an amateur radio operator, I
 am building this 
 repeater for amateur radio use on the 144-148 mc
 band and the engineer 
 of the station claims he has an amateur radio
 license, but i am 
 beginning to have my doubts and the engineer has not
 been supportive of 
 building a hi-fi audio repeater. how can i confirm
 if the engineer has 
 a amateur radio license? is there a listing of
 engineers and what 
 licenses they have? i went through a lot of trouble
 to find the older 
 tube type equipment to build this hi-fi quality
 audio repeater and want 
 to make it work to serve the non-commercial fm
 station. what suppliers 
 carry older motorola radio parts?
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 


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Re: [Repeater-Builder] Re: Simple PIC Repeater Controller

2006-05-01 Thread Paul Guello 
I agree, it is a repeater remote controller (used to
controll the power, commnands and accessories) and not
really what is normally called a repeater controller.
Paul kb9wlc
--- Jim B. [EMAIL PROTECTED] wrote:

 Ron Wright, Skywarn Coodinator wrote:
  Dinesh,
  
  Looked at your controller.  Looks pretty good. 
 However, did not see 
  any CW ID or audio processing, a must for a ham
 repeater.  Adding 
  these is a simple thing. CW ID is mostly software.
  With small PIC 
  memory maybe not enough room.
 
 Frankly, I didn't see any transmitter control at
 all. I would call it a 
 DTMF controller, not a repeater controller.
 
 Looks like a nice little board though. Much better
 then the ones I've 
 seen in the past. And cheaper too!
 
 -- 
 Jim Barbour
 WD8CHL
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 


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[Repeater-Builder] NHRC-2 + MASTRII

2006-04-21 Thread Paul Guello 

I'm trying to interface a NHRC-2 controller into a
Mastr II repeater station (the continuos duty actual
repeater).  The GE controller works fine.  But if I
connect the NHRC and pull the GE then keying up lasts
about a second then it un-keys and re-keys continuosly
until you release the handheld.  Anyone have any
suggestions on what to look for?  It appears that the
COR voltage drops, if that helps.  I've tried
everything I could think of.  
Paul kb9wlc

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Re: [Repeater-Builder] heliax connectors

2006-04-15 Thread Paul Guello 
Try Surplus Sales of Nebraska first, they usually have
new old stock ones and ebay can be a good source too. 
Paul kb9wlc

--- Tim and Janet Campbell [EMAIL PROTECTED]
wrote:

 Where is the best place to get 7/8 heliax connectors
 reasonably priced.  I 
 am looking for N female type.
 
 Tim
 
 - Original Message - 
 From: Repeater-Builder@yahoogroups.com
 To: Repeater-Builder@yahoogroups.com
 Sent: Thursday, April 13, 2006 10:41 PM
 Subject: [Repeater-Builder] Digest Number 3719
 
 
 There are 25 messages in this issue.
 
 Topics in this digest:
 
1.  Re: MSF-5000 Manuals
  From: Eric Lemmon [EMAIL PROTECTED]
2.  Re: 220MHz Repeater Power Amp???
  From: Paul Finch [EMAIL PROTECTED]
3.  OT-Mitrek Yahoo Group
  From: tgundo2003 [EMAIL PROTECTED]
4.  Re: 220MHz Repeater Power Amp???
  From: James [EMAIL PROTECTED]
5.  Re: motorola r-100 problem
  From: jerrepotable [EMAIL PROTECTED]
6.  Re: motorola r-100 problem
  From: jerrepotable [EMAIL PROTECTED]
7.  Réf. : RE: [Repeater-Builder] motorola r-100
 problem
  From: jacques fraser [EMAIL PROTECTED]
8.  Re: Réf. : RE: [Repeater-Builder] motorola
 r-100 problem
  From: sgreact47 [EMAIL PROTECTED]
9.  Re: MSF-5000 Manuals
  From: Mike Morris [EMAIL PROTECTED]
10.  FS: Nokia BSR 220MHz/440MHz repeaters
  From: Erik Finskas [EMAIL PROTECTED]
11.  Re:
  From: [EMAIL PROTECTED]
 [EMAIL PROTECTED]
12.  Re:
  From: [EMAIL PROTECTED]
 [EMAIL PROTECTED]
13.  Re: MSF-5000 Manuals
  From: Bob M. [EMAIL PROTECTED]
14.  Re: OT-Mitrek Yahoo Group
  From: Mike Perryman
 [EMAIL PROTECTED]
15.  Re: OT-Mitrek Yahoo Group
  From: Mike Perryman
 [EMAIL PROTECTED]
16.  Re: OT-Mitrek Yahoo Group
  From: Mike Perryman
 [EMAIL PROTECTED]
17.  Re: 220MHz Repeater Power Amp???
  From: derigent1 [EMAIL PROTECTED]
18.  Re: 220MHz Repeater Power Amp???
  From: Gene Fassett [EMAIL PROTECTED]
19.  Fan timer
  From: hl31943 [EMAIL PROTECTED]
20.  Re: 220MHz Repeater Power Amp???
  From: vmckever [EMAIL PROTECTED]
21.  Re: Fan timer
  From: Maire-Radios
 [EMAIL PROTECTED]
22.  Re: 220MHz Repeater Power Amp???
  From: Gene Fassett [EMAIL PROTECTED]
23.  Re: Fan timer
  From: KB6ZOP [EMAIL PROTECTED]
24.  Re: MSF-5000 Manuals
  From: Eric Lemmon [EMAIL PROTECTED]
25.  RE: Réf. : RE: [Repeater-Builder] motorola
 r-100 problem
  From: gervais fillion [EMAIL PROTECTED]
 




 
 Message 1
 From: Eric Lemmon [EMAIL PROTECTED]
 Date: Wed Apr 12, 2006 7:04pm(PDT)
 Subject: Re: MSF-5000 Manuals
 
 Don,
 
 The Basic Service Manual and all Detailed Service
 Manuals are still in print
 and available from Motorola Parts at 800-422-4210. 
 The Basic manual applies
 to all four bands of MSF5000 stations (VHF, UHF,
 800, and 900), while the
 Detailed (Depot) manuals are unique to each band. 
 Each manual comes in a
 nice ring binder with tabs.  Here's the whole list:
 
 Basic Instruction Manual 6881092E05, about $41
 VHF Depot Manual 6881092E75, about $68
 UHF Depot Manual 6881092E80, ditto
 800 MHz Depot Manual 6881092E85, ditto
 900 MHz Depot Manual 6881092E90, ditto
 
 73, Eric Lemmon WB6FLY
 
 
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of Don Wisdom
 Sent: Wednesday, April 12, 2006 3:26 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] MSF-5000 Manuals
 
 Hi,
 Im looking for a set of MSF-5000 manuals for  UHF
 MSF-5000 low govt
 split.  Please advise on cost and availability.
 Thanks
 --Don Wisdom
 
 
 
 
 
 
 
 
 
 Yahoo! Groups Links
 
 
 
 
 
 
 
 
 
 




 
 Message 2
 From: Paul Finch [EMAIL PROTECTED]
 Date: Wed Apr 12, 2006 7:04pm(PDT)
 Subject: Re: 220MHz Repeater Power Amp???
 
 Fix the old one?  You can get those transistors,
 unless the boards are burnt
 up it's worth it.
 
 Paul
 
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] Behalf
 Of derigent1
 Sent: Tuesday, April 11, 2006 1:09 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] 220MHz Repeater Power
 Amp???
 
 
 I'm working on re-activating my long dormant 220MHz
 repeater in Cherry
 Valley NY.  My old TPL, 100 Watt PA died long ago
 after an anomalous
 high voltage event
 
 I can't seem to find much on the market these days
 to replace the PA
 other than the Hamtronics PA which sells for like a
 grand.
 
 Any suggestions
 
 Gene
 WA2IJE
 
 
 
 
 
 
 
 
 
 
 
 
 
 Yahoo! Groups

Re: [Repeater-Builder] DB-224 versions

2006-04-07 Thread Paul Guello 
If this is for a repeater you definately want the one
designed for 2 meters.  I've been screwing around with
modifying one of the 150's for months trying to get
the swr down.  It would have been worth it to buy a
new one for 2m in the first place after all the time
you put in to it.  Paul, kb9wlc, k9uws advisor

--- Chappy [EMAIL PROTECTED] wrote:

 We plan to buy a new DB-224 antenna for
 146.34/94.
 We notice the popular model covers 150-160 MHz.
 Also available is a model  covering 138-150 MHz, for
 about $50 more.
 I've heard many times that the 150-160 model covers
 2 meters just fine.
 In fact we have a DB-264 with 150-160 MHz specs and
 it seems OK.
 Is it worth it to look for the 138-150 MHz version ?
 Thanks -- kd4ss
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 


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Re: [Repeater-Builder] Anetenna Help

2006-04-07 Thread Paul Guello 
I've made an antenna whip out of a stainless steel
heliac welding rod.  If you can scounge one, that
might work.  Paul, kb9wlc

--- Thomas Flint [EMAIL PROTECTED] wrote:

 I have a dual band magent mount antenna, the other
 day during high 
 winds I lost the antenna part.  Do to financial
 issues I am unable to 
 buy another at this time.  Does anyone know of away
 I can make it work 
 using something else in its place.  Any help would
 be greatly 
 appreciated.
 
 KL0LS
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 


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Re: [Repeater-Builder] Re: LM-386 audio buffer board

2006-02-07 Thread Paul Guello 
I'd be interested in some too.  Paul kb9wlc

--- ldgelectronics [EMAIL PROTECTED]
wrote:

 I have a board that is 90% of that. It was meant to
 be used with an 
 off board pot and does not have the .05 uF / 10 ohm
 network.
 
 This was for another project that never took off. I
 have hundreds of 
 them that you can have just for the shipping cost.
 Let's say $1 for 5 
 or less. E-mail me directly.
 
 
 Dwayne Kincaid
 WD8OYG
 
 
 
  Did anybody ever cut a board for the LM-386 audio
 buffer project on 
 the 
  repeater builder web site?  I am getting tired of
 vector boarding 
 the 
  things.
  
  Thanks,
  
  td
  wb6mie
 
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 


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Re: [Repeater-Builder] DB 224 Antenna Orientation on a large (?25 ft.) faced tower

2005-11-28 Thread Paul Guello 
What broadcasters do to get the best pattern on a
large tower is to mount the antenna on the leg coming
straignt off the leg. (perpendicular with the opposite
face)
Paul 

--- Roger White [EMAIL PROTECTED] wrote:

 Ok, many thanks. I do not have the old catalog and
 remember something about 
 the orientation of the dipoles toward the tower.
 But, I imagine since this 
 tower is so wide, it will affect the pattern no
 matter what, but the site 
 has cheap rent :), so beggars can't be choosers!
 
 73,
 Roger
 - Original Message - 
 From: Eric Lemmon [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Monday, November 28, 2005 8:31 PM
 Subject: Re: [Repeater-Builder] DB 224 Antenna
 Orientation on a large (?25 
 ft.) faced tower
 
 
  Roger,
 
  My Decibel Products catalog shows that a DB224E-JJ
 antenna can achieve
  nearly omnidirectional coverage when side-mounted
 on a tower with a DB5001
  Side Mount Kit, with all dipoles pointing inward
 toward the tower.  This
  kit positions the antenna mast 18 inches away from
 the tower.  Other
  spacings will probably affect the pattern
 significantly.
 
  73, Eric Lemmon WB6FLY
 
  Roger White wrote:
 
  I am going to put up a Andrews dB224JJ (220 MHz
 antenna) on our tower
  at TI in Dallas. I have had an antenna on this
 tower up at 250-270 ft.
  for many years (a 6dB Stationmaster for 145 MHz
 and a 6dB Stationmaster
  for 224 MHz). Our 2 meter antenna is now a dB224,
 with the dipoles
  situated around the antenna mast as if for a top
 of the tower mount
  with an omni pattern. The 220 antena is an anemic
 3 dB gain Antenx,
  which is not much better than a wet noodle with
 some gain.
 
  I seem to remember somewhere (maybe an old dB
 Products catalog) where
  for an antenna of the dB224, if you face all four
 dipoles toward the
  tower, you stand a chance of getting s more omni
 pattern (at least it
  is suppose to have somewhat equal gain ripple
 around the tower). The
  tower is 25 ft. wide on each face. The antenna
 will be offset from one
  leg around 5 to 6 feet at least.
 
  Does anyone have any experience in mounting this
 type of antenna in
  this manner?
 
  Roger W5RD
 
 
  Yahoo! Groups Links
 
 
 
 
 
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 
 
 
 
  
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 




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Re: [Repeater-Builder] RF Tilt Compensator Schematic?

2005-11-12 Thread Paul Guello 
Just buy the tilt compensator or an amp that has one
internal.  Try Toner cable equipment and Quality RF
services, those are two companies I remeber dealing
with, there are several more.
Paul kb9wlc

--- DCFluX [EMAIL PROTECTED] wrote:

 It is 75 Ohm cable, Paticualrly RG-6 Plenum which
 has approx 1dB of Tilt per
 Octave at 100'. Maximum power is +25dBmV. Intersted
 in attenuating the lower
 channels more than the upper ones, and I will follow
 it with an amp on each
 floor after it is compensated.
 
 Some genius company, that is used to installing
 security systems in Las
 Vegas ran the cable in this building and thought
 that a single amplifier
 would cover the entire building. Which is scary
 because the company had the
 $4000 piece of test equipment to tell them how
 screwed up their install was.
 Up on the third floor I measured 50dB of tilt
 between Ch.2 and Ch.77
 
 On 11/12/05, Kevin Custer [EMAIL PROTECTED] wrote:
 
  Matt,
 
  Which way do you want to tilt it? To compensate
 for cable that precedes
  it?
 
  Does it have to be for 50 ohms, or will 75 be
 okay? How much power does it
  need to handle?
 
  Kevin Matt,
 
  Which way do you want to tilt it? To compensate
 for cable that precedes
  it?
 
  Does it have to be for 50 ohms, or will 75 be
 okay? How much power does it
  need to handle?
 
  Kevin
 
 
 
 
  --- Original Message ---
  From : DCFluX[mailto:[EMAIL PROTECTED]
 [EMAIL PROTECTED]]
  Sent : 11/8/2005 6:33:36 PM
  To : Repeater-Builder@yahoogroups.com
  Cc :
  Subject : RE: [Repeater-Builder] RF Tilt
 Compensator Schematic?
 
  Any one have any ideas on how to build a
 Tilt-Compensator? I had
  come ideas about using a pre-emphasis circuit, but
 that is designed for
  audio frequencies and I need something for 50-550
 MHz. Preferably
  with a slope adjustment so it can contend with
 varying lengths of cable.
 
 
 
 
 
 
 
 
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Re: [Repeater-Builder] decibel db-224 (vhf) drawings)

2005-08-08 Thread Paul Guello 
Yes, I'd like to see them.  Paul kb9wlc

--- skipp025 [EMAIL PROTECTED] wrote:

 Would anyone be interested in drawings of the
 Decibel 
 DB-224-A (150-160MHz)  DB-224-E (138-150MHz)
 Antennas? 
 
 Like the previous UHF Decibel Antenna drawings
 scanned 
 into pdf file and available on my sonic page and the
 
 Repeater Builder site, these are available free. 
 
 Reply direct to me or wait for Mike to get the
 copies 
 I've emailed to him up on the RB-Site. I'll also
 have 
 them up on the sonic page in a week or so... 
 
 cheers
 skipp 
 
 skipp025 at yahoo.com 
 www.radiowrench.com/sonic 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
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Re: [Repeater-Builder] Any ideas? (a little off topic)

2005-07-30 Thread Paul Guello 
If I understand what you want to, get a radar image to
a remote or mobile location. I thought about two ways
to do this.  First, break it down into source and
transport.  

The radar image or source material could either be
taken directly from a video output of a computer (use
a video card that has a standard video output).  Or
take the video output from a vcr or other video tuner
if the radar is from TV, and do a video capture.  This
could also be done with a computer.

For transport either use wireless internet or the 440
ham ban.  Part of the 2.4 GHz wireless internet band
is within a ham band, so a ham can legally run higher
power bi-directional amplifiers.  The laptop used for
receiving could have a card with external antenna
jack.  Or use the 440 ham band to do TV transmission. 
There are a couple of cable TV channels that lie
within the 440 ham band.  So, with the right equipment
a video transmitter could be setup and then use a
cable ready TV for the receiver.  

Check the ARRL website for more information on both of
these ideas.

Paul, kb9wlc


 
 ~Ben, KB9LFZ
 
 --- David Rogers [EMAIL PROTECTED] wrote:
 





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RE: [Repeater-Builder] crystals

2005-07-21 Thread Paul Guello 
I have never had a problem with JAN or Bomar, and
International is good too, but expensive.
Paul, kb9wlc

--- Ron Wright [EMAIL PROTECTED] wrote:

 
 Best places I ran accross that are still making
 crystals are International,
 800-725-1426, in OK and Bomar, 800-526-3935.  For a
 pair including shipping
 International $47 taking about 6 weeks, Bomar $60
 with true 2 weeks.  Think
 both are about the same and make a very good crystal
 and are well worth the
 extra money.  Please don't use JAN, hi.
 
 Just have to give them radio, freqs and payment.  
 
 This is just the crystals for you to install in
 ICOMs.  Both have ICOM
 service, but cost much more.
 
 73, ron, n9ee/r
 
 
 
 
 
 Ron Wright
 [EMAIL PROTECTED]
 
 Ron is the owner of Micro Computer Concepts, a
 manufacture of repeaters and
 repeater controllers since 1988.
 You may see our products at
 http://home.earthlink.net/~mccrpt or call at
 727-376-6575.
 Contact me at 8849 Gum Tree Ave, New Port Richey, FL
 34653 USA
 
 Owner of the 146.64 repeater, the highest repeater,
 1175 ft HAAT,
 in the Tampa Bay area, Florida.  The repeater also
 has ECHOLINK, node 79540.
 
 
 Pasco County Skywarn Coordinator
 Skywarn meets on 146.64 each Wednesday at 8 PM.
 Skywarn nets are activated on 146.64 when the 
 National Weather Service broadcast a weather alert.
 
 see our web page at
 http://groups.yahoo.com/group/pascoskywarn/
 
 All are welcome.
 
 
  [Original Message]
  From: gary [EMAIL PROTECTED]
  To: Repeater-Builder@yahoogroups.com
  Date: 7/20/2005 8:41:57 PM
  Subject: [Repeater-Builder] crystals
 
  Where can I find 6 meters Crystals for a GE Master
 II .
 
 
 
 
 
 
 
 
   
  Yahoo! Groups Links
 
 
 
   
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 




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RE: [Repeater-Builder] Re: PARTS

2005-06-08 Thread Paul Guello 
For circuit board materials and supplies:
Circuit Specialists and Edlie Electronics carry most
supplies.
For circuit boards ready made for assembling projects
from magazine articles (mostly ham radio) Far Circuits
http://www.farcircuits.net/

Paul KB9WLC

--- KE5CTY Bob [EMAIL PROTECTED] wrote:

 I called him after looking over the website and he
 is a great guy. Has
 been doing this for a long time. Problem is because
 we are starting from
 scratch the XYL says its too much to spend.
 
  So I am trying to contact some clubs to see if they
 have anything they
 would get rid of (even if the boys have to remove it
 from the board
 first). Have to take it little by little I guess. It
 all adds up. Maybe
 this will be a good lesson for the boys also.
 
  Came to about 100.00 for mounting hardware and all
 the assorted
 components I thought we might need to stockpile for
 the beginning. One
 thing I did notice is that he doesn't have any
 boards so we can do
 printed circuit boards at home.
 
  I really wanted to teach them how to do it from
 absolute scratch if at
 all possible. The experimenters boards are fine but
 not what I had in
 mind.
 
  I want them to really get a feel for what is going
 on behind the
 scenes. I found a pcb layout application that is
 free so now I just need
 to find the copper clad board material and some
 etchant.
 
 TNX,
 KE5CTY (old calls WB5ZQU - WY5L)
 http://www.qsl.net/ke5cty/
 Code may be dieing but the pioneering spirit that
 put the code there in
 the first place is still going strong.
 
 
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of Laryn Lohman
 Sent: Tuesday, June 07, 2005 11:49 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Re: PARTS
 
 
 
  I have been all over ebay,
 
 
 I have not dealt with this place, but it has
 parts.
 
http://www.danssmallpartsandkits.net/
 
 
 Laryn K8TVZ
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 
  
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 




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Re: [Repeater-Builder] PARTS

2005-06-05 Thread Paul Guello 
Besides the other companies mentioned I use:

Ocean State Electronics http://www.oselectronics.com/

Electronic Goldmine
http://www.goldmine-elec.com/default.htm

Dan's Small Parts and Kits
http://www.danssmallpartsandkits.net/

Circuit Specialists
http://www.web-tronics.com/

DC Kits
http://www.dckits.com/

Kelvin
http://www.kelvin.com/

Part of the reason whey things are getting hard to get
is that there are not that many people that build
things anymore.
Paul KB9WLC


--- KE5CTY Bob [EMAIL PROTECTED] wrote:

 I have been all over ebay, does anyone know where my
 son and I can find a bunch of Ham Radio related
 spare parts for building some of the home brew
 projects we are finding all over the internet but no
 parts, like transistros, resistors, coils, fets,
 diodes, connectors, ect in one lump purchase?
 
 I thought mabe I would find an estate sale or
 something on ebay but no luck.
 
 We are trying to start building homebrew accesories,
 ect and are starting from scratch. I have built some
 parts bins out of cardboard boxes and some wooden
 crates but can't find any parts except in TV's and
 old radios. Some are usable but I don't have a
 reference for most of them to see what the specs on
 them are.
 
 Something that would have assorted parts including
 perf boards, small enclosures, ect
 
 We live in the country and the closest parts store
 is over 100 miles away so we wanted to find it on
 the internet and hopefully at discounted prices the
 XYL says, no more than $50.00
 
 TNX,
 KE5CTY (old calls WB5ZQU - WY5L)
 http://www.qsl.net/ke5cty/
 Code may be dieing but the pioneering spirit that
 put the code there in
 the first place is still going strong.
 
 
   




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RE: [Repeater-Builder] Re: Help in selecting 2 bay antenna

2004-12-22 Thread Paul Guello 

Are you sure that's the correct part number?  It does
not come up on the Decibel web site.

--- Richard Ranta [EMAIL PROTECTED] wrote:

 
 Seasons greetings to you all!
 
 Our club is in the process of moving its repeater
 and we're going to go with
 a new antenna. The problem is, the company who owns
 the tower has a brand
 new Decibels products A711 antenna. Will this work
 on the frequency of
 145.230Mhz?
 I hope I'm not asking a question that has just been
 asked.
 
 Hope you all have great CHRISTMAS
 
 Richard Ranta K8JX
 
/\___/\

  ^   ^  
 )_o_(I love Samoyed Rescue- Save a Sammy
 !!
U   
 Visit Blaze's Forever Home
 http://www.foreverhomesamoyed.org
 
Want an exciting hobby?
visit  http://www.W8USA.ORG
 
 A good teacher will try to convince a poor student
 that they are better
 than they think they are, in order to give them
 confidence to do better. A
 bad teacher only recognizes a poor student.
 
 
 
  
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 




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Re: [Repeater-Builder] Source for custom made cables

2004-12-17 Thread Paul Guello 

RCA plug to BNC jack adapters are readily available. 
With that adapter all you need then is a N to BNC
cable, much easier to find or make.
Paul kb9wlc
--- w9mwq [EMAIL PROTECTED] wrote:

 
 
 Anyone know of a good source for made up custom
 cables for repeater 
 use.  Or might someone have what I am looking for. 
 I need a jumper 
 about 3.5' that has an N Male connector on one end
 and an RCA 
 connector on the other.  This is for my receiver
 from the duplexer.  
 It is a mastr receiver, has a rca type connector on
 it.  Or would it 
 make more sense to change the connector on the
 receiver to a type N 
 chassis mount.  Just not real fond of the adapter I
 had to use to 
 convert it.  Thanks.
 
 Mathew
 W9MWQ
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 





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Re: [Repeater-Builder] Update: Problem with Spectrum Communications Corp.

2004-12-14 Thread Paul Guello 

Did you guys send a check or use a credit card?
If you used a credit card, then contact the credit
card company and explain the situation, they should
give you a credit.  That's how I resolved my last
business with Spectrum after they did not respond for
months.
Paul

--- russ [EMAIL PROTECTED] wrote:

 
 The problem is that Spectrum has been down this road
 many times! They do not
 care one bit about the BBB. I was by there a week or
 so a go and only one
 car in the parking lot. Not a good sign. If it where
 me I would file legal
 action fast. That has bit. Not just civil action but
 criminal action against
 the owner. Taking money with the intent not to
 deliver is a crime in PA.
 Good luck on this one!
 73 Russ, W3CH
 
 - Original Message - 
 From: Steve Bosshard (NU5D) [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Monday, December 13, 2004 7:58 PM
 Subject: RE: [Repeater-Builder] Update: Problem with
 Spectrum Communications
 Corp.
 
 
 
  The local Better Business Bureau might put a small
 amount of heat on
  Spectrum also.  Ssb
 
 
  -Original Message-
  From: Mark Holman
 [mailto:[EMAIL PROTECTED]
  Sent: Monday, December 13, 2004 6:46 PM
  To: Repeater-Builder@yahoogroups.com
  Subject: Re: [Repeater-Builder] Update: Problem
 with Spectrum
 Communications
  Corp.
 
 
  Also try  this site http://www.plannetfeedback.com
  weather this business
 is
 
  registered there who knows, but such a posting
 will be public information.
  [Steve Bosshard (NU5D)]
 
  ---
  Outgoing mail is certified Virus Free.
  Checked by AVG anti-virus system
 (http://www.grisoft.com).
  Version: 6.0.809 / Virus Database: 551 - Release
 Date: 12/9/2004
 
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 




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Re: [Repeater-Builder] return loss bridge?

2004-12-13 Thread Paul Guello 

The Eagle RLB150x4 is the one I use;

http://www.eagle-1st.com/prod/pr2/RLB4/RLB4.htm

Paul kb9wlc

--- doug [EMAIL PROTECTED] wrote:

 
 
 
 i am looking for a return loss bridge
 
 
 anyone?
 
 
 
 doug
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 




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Re: [Repeater-Builder] Re: 802.11b wireless

2004-12-09 Thread Paul Guello 

Has anyone tried a bi-directional amplifier like this
one on ebay;
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemcategory=61815item=5736479461rd=1ssPageName=WDVW

Check the ARRL site for more information on ham use;
http://www.arrl.org/hsmm/project.html

And check this link for a cool waveguide antenna;
http://www.trevormarshall.com/waveguides.htm

Paul kb9wlc

--- Tedd Doda [EMAIL PROTECTED] wrote:

 
 On Wed, 08 Dec 2004 17:00:12 -0800, Ken Arck wrote:
 
 Hopefully, Kevin's suggestion is Linux usable as
 well.
 
 Hi Ken:
 
 I'm the feed point of a commercial 802.11 network,
 and
 using their hardware makes things look very easy. 
 
 The hardware is Canadian based out of BC, and their
 website is:
 
 https://tranzeo.com/index.php?section_id=10
 
 I've sent them an email to find out if the hardware
 can be made to work in the Ham band portion of the
 band.
 
 
 
 Tedd Doda, VE3TJD
 
 Lazer Audio and Electronics
 Baden, Ontario, Canada
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 [EMAIL PROTECTED]
 
  
 
 
 
 




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Re: [Repeater-Builder] Supplier of bi-directional RF amps.

2004-11-23 Thread Paul Guello 



What frequency or band does it need to operate on?
Paul kb9wlcJack Hood [EMAIL PROTECTED] wrote:
Hi Folks!I wonder if you can help? I am looking for suppliers of low power (around +20dBM) in building bi-directional amplfiers. It doesn't matter if the suppler is US or Europe based.Thanks in anticipation.Jack (:)GM4COXYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/
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Re: [Repeater-Builder] DB264-A vs -C dimensions

2004-10-31 Thread Paul Guello 



Changing the spacing between elements will change theangle the signal radiates at slightly. Usually done to bring the signal down further.
Paul Guello, kb9wlc

Paul Kelley [EMAIL PROTECTED] wrote:
Thanks Chuck,I have seen you mention that rule of thumb before. In this case the manufacturer seems to have used 0.78 between the bottom dipole and the top set, and 0.85 between the middle ones... probably a compromise to make the harness fit -- it's inside the mast on this model.PaulOn Saturday 30 October 2004 04:29 pm, Chuck Kelsey wrote: Between 0.85 to 0.95 wavelength, center to center. Chuck WB2EDV - Original Message - From: "Paul Kelley" <[EMAIL PROTECTED]> To: <REPEATER-BUILDER@YAHOOGROUPS.COM> Sent: Saturday, October 30, 2004 3:46 PM Subject: [Repeater-Builder] DB264-A vs -C dimensions  OK, I know the major response to this is going to be  "forget it and buy the right antenna". but I
 will  blunder in and ask this anyway.   Question: does anyone know the center to center dipole  spacing for a DB264-A (150 - 160 MHz) antenna? I'm trying to evaluate whether it is feasible to modify  a DB264-C (164-174 MHz) to the 2 meter ham band. I need  to figure out how many things would have to be  changed...   Obviously the dipoles would have to be lengthened.  That's NOT a problem... (I have someone who can weld in  some sections to "properly" extend them).   I will have to make up a custom phasing harness, as  they apparently don't make a version of this antenna  for the ham band. I guess I can handle this... but a  longer harness implies the dipole spacing will have to  change in order to cram the new harness inside
 the  mast...???   I looked up the physical specs and found the mast is  the same length (258") for the A, B, and C ranges. So I  may be able to drill some new holes, plug some old ones  and get away with it. I'd like to know for certain if  they used wider spacing before I dig too far into this.  I'm about to disassemble the antenna and see what the  phasing harness consists of (hopefully the coax has  meaningful numbers on it)   Thanks,   Paul N1BUGYahoo! Groups Links Yahoo! Groups Links-- Paul KelleyAurora Sentry - http://www.aurora.n1bug.net/N1BUG Web - http://www.n1bug.net/Yahoo! Groups Links* To visit your group on the
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Re: [Repeater-Builder] Repeater Controller

2004-09-27 Thread Paul Guello 

Have you checked out the inexpensive controller kits
from NHRC?  They may have more features than you need,
but they are easy to build and small.

http://www.nhrc.net/

Paul, KB9WLC

--- goreks2000 [EMAIL PROTECTED] wrote:

 Hello
 I want to build a simple repeater controller to have
 as a portable 
 repeater along wit my Motorola HT800 (407-435mhz)to
 use on small 
 motor sports event but I don't find (I think I use
 one HT800 as RX 
 and a mobile rig as TX ex yaesu FT7800)
 Any thing simple, most controllers have DTMF or CTSS
  in it 
 The only thing I need  is  PTT opening (maybe 1750
 hz )
 And a Audio isolation/amplifier if necessary 
 Can any one help me with building instructions 
 Manny thanks and 73
 Göran  SM1YCE
 Sweden
 
 Sorry for my bad spelling I hope you understand any
 way
 
 
 
 
 
 
  
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Re: [Repeater-Builder] Repeater Controller

2004-09-27 Thread Paul Guello 



Ed,
The Link RLC-4 is a 4 port controller, I don't think NHRC has anything like that.
Paul"Mr. Edgar McKinney" [EMAIL PROTECTED] wrote:
Do they have a controller like the LINK's RLC-4?EdPaul Guello wrote: Have you checked out the inexpensive controller kits from NHRC? They may have more features than you need, but they are easy to build and small. http://www.nhrc.net/ Paul, KB9WLC --- goreks2000 <[EMAIL PROTECTED]>wrote:  Hello  I want to build a simple repeater controller to have  as a portable  repeater along wit my Motorola HT800 (407-435mhz)to  use on small  motor sports event but I don't find (I think I use  one HT800 as RX  and a mobile rig as TX ex yaesu FT7800)  Any thing simple, most controllers have DTMF or CTSS  in it  The only thing I need is PTT opening (maybe 1750 
 hz )  And a Audio isolation/amplifier if necessary  Can any one help me with building instructions  Manny thanks and 73  Göran SM1YCE  Sweden   Sorry for my bad spelling I hope you understand any  way Yahoo! Groups Links[EMAIL PROTECTED] ___ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com Yahoo! Groups LinksYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this
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Re: [Repeater-Builder] message error

2004-08-30 Thread Paul Guello 
Don't assume that antenna gain is the only thing that
effects range.  Antenna height, size and length of
feedline, quality of antenna and how it is mounted and
duplexer quality and tuning all effect range as well
as transmitter power and overall receiver sensitivity.
 High RF enviroments can also degrade receiver
performance.  Take a look at your repeater as a
system,  looking at the quality of all of the devices
as well as the quality of the installation.  One
poorly installed connector can eliminate all the
bennifits from everything else being correct.
Paul, kb0wlc

--- ian wells [EMAIL PROTECTED] wrote:

 Hi guys .I am sorry i haven't returned any messages
 as my internet 
 email sever has stuffed up and i haven't received
 any messages for 2 
 days or more .it is just i checked up on the builder
 website to see 
 the messages i have missed.Thanks to all that
 replied .The db 
 comparrison is being asked as i have 6db antennas on
 each of my 
 470meg repeaters and they aren't getting any real
 distance over flat 
 country .we had 12 db coaxial antennas on our local
 uhf repeater and 
 then changed them to what was called coppercore
 antenas and we made a 
 huge difference to our long distance coverage .The
 range of the 6db 
 isn't bad but we wanted to pick up another 20-50kms
 at least and 
 installing linears on the site wont benifit as it
 wont improve rx 
 range without rx masthead amps so the better
 sugestion was to install 
 higher gain antenas .the sites would be able to be
 upgraded to 12 db 
 antenas if we can find a supplier .the highest we
 have found is 9db .
 but i will certainly take all sugestions into
 consideration.thank you 
 
 Thank you
 Ian Wells
 Kerinvale Comaudio
 mail service 1017,
 Biloela,4715.
 www.kerinvalecomaudio.com.au
 1-email- [EMAIL PROTECTED]
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Re: [Repeater-Builder] FCC Enforcment

2004-06-10 Thread Paul Guello 
I'd like to get the rest of this video.  Any idea
where one would look?  It says 'MetroVision 7 abc',
but no indication of where they are.
Paul, kb9wlc

--- Don [EMAIL PROTECTED] wrote:
 
 Here is a link for an interesting article about
 interference of radio
 signal and how they are  tracked down ,  I always
 thought you had to 
 Triangulate a Signal ,   Ride along with the FCC  I
 did Virus Check  files 
 are ok.
 
 Enjoy  Don KA9QJG
 
 
 
 One file is very large and the other is small
   http://www.sandman.com/files/FCC-Interference.mpg
 
 http://www.sandman.com/files/FCC-Interference.wmv
 
 
 
 
 
 
  
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Re: [Repeater-Builder] Small Repeater controller

2004-05-26 Thread Paul Guello 



If you need remote functionality, the NHRC-4 is a dual port controller so you can connect two radios to it. It's about 3"x 3.75". The partial kit is $40 and the other parts run about $35 to $40, so it can be put together for $75 to $80. It's a nice product. Here's a link;
http://www.nhrc.net/nhrc-4/index.php

Paul, kb9wlcPaul Finch [EMAIL PROTECTED] wrote:
Hello,Who makes the smallest repeater controller with CWID? I may or may not wantremote functionality with this board, any ideas?Thanks,PaulWB5IDMYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/
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Re: [Repeater-Builder] Help needed finding sources of interference

2004-04-26 Thread Paul Guello 



Is there an Air Base in the neighborhood? We have interference on the UHF band here also. Several technicians spent a lot of time tracing it to the local Air Base using direction finding techniques. The Air Force people just tell you to go away, when questioned. Checking the rules, the military does have primary use of the UHF frequencies.

Paul, kb9wlcDave Karr [EMAIL PROTECTED] wrote:
Residents of lower Michigan,I'm in need of some help identifying two different sources of interference, which appear to be originating somewhere in lower Michigan, to UHF systems in the Milwaukee area.The systems being interfered with are commercial systems, one of which is a public safety repeater.The nature of the offending signals are continuos in nature, and neither appear to be licensed. As the propagation across the lake is enhanced, they become a problem. Its hard to know how much to trust beam headings under these sorts of situations, but bearings taken seem to indicate an origin, of both signals, slightly north of Milwaukee.While it would be wonderful if the FCC was actually interested in pursuing complaints of unlicensed operation on their own, at this point I'm prepared to offer cash rewards to those which
 provide a verifiable source of these transmissions.If you are able to help, please contact me directly for more information.Thanks,--Dave Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/
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[Repeater-Builder] Manual for MSR2000

2004-04-25 Thread Paul Guello 



Anyone out there in repeater land have a manual they could spare or share for a MSR2000? Or know where one is available?

Paul, kb9wlc
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Re: [Repeater-Builder] Re: Decibel repeater antenna question......

2004-04-18 Thread Paul Guello 



One of the most impressive features of the Decibel antennas is their longevity. They will easily last 20 to 30 years, if installed correctly. These are well designed, well built and worth the investment.bradley glen [EMAIL PROTECTED] wrote:
Hi AllThanks to all for the many responses to my questions.I see many different ideas on the feed impedance ofthe dB224 and dB420 stacked dipoles.I have seen that the inpedance of a standard foldeddipole (300 Ohm ) lowered when brought in closeproximity to the mast.What is the recommended spacing between the uhf andvhf to the mast to go on the 100 Ohm impedence area ?Has antone done a antenna shootout between theseantennas and other stacked arrays ?RegardsBradley Glen ZS5WT--- Tony King - W4ZT <[EMAIL PROTECTED]>wrote: You may find this link helpful when looking at the matching harness for  these dipoles: http://www.w4dex.com/ant.htm  It's appeared here before but will be helpful to see it again.  73, Tony W4ZT 
 At 01:52 AM 4/18/2004, you wrote:  --- Chuck Kelsey <[EMAIL PROTECTED]>wrote:   Just curious... how did you determine that each   element was 50 ohms? I was always of the understanding that the Decibel   design, each element was   100 ohms. Also, that the later versions of Decibel   arrays used 50 ohm and 35   ohm cable, no 75 ohm stuff. Chuck   WB2EDV - Original Message -   From: "Al Wolfe" <[EMAIL PROTECTED]>   To:    Sent: Saturday, April 17, 2004 6:20 PM   Subject: [Repeater-Builder] Re: Decibel repeater   antenna question..   
 I've worked on a great many of these types of   antenna arrays in the   last35+ years and every one had an impedance of 50   ohms at the individualelement. An odd multiple of a 1/4 wavelength of 75   ohm coax takes it to   100ohms. When stacking elements two 100 ohm loads in   parallel are 50. Then doit again for four bays, again for eight, etc.   In free space their impedance would be higher,   but they are designed   towork only a few inched from a mast pipe and   normally the elements are   fairlyfat in terms of diameter to length ratio  Hence   the
 nominal 50 ohmimpedance.   Another scheme was to use two bays, make the   feed line from each bay apiece of 50 ohm cable, the length being   unimportant other than being   equal,and tying them together for 25 ohms. Then a   special 35 ohm 1/4 wave piece   ofline brought it back to 50 ohms. Two pieces of 75   ohm cable in parallelwould do the same transformation but can be messy   to fabricate.   YMMV, though,   73, Al K9SI  Judging from the cable and the lengths listed,   each 
   dipole must present a 100 ohm impedence, not 50,assuming the data is correct.  IF the lengths and types of coax are correctly represented by the web article (and I don't know that for a fact) THEN the impedence would work out to 100 ohms per bay. 50 ohm impedence per bay does not work out correctly, given the info from the web site.  http://www.kc5dgc.net/db224.htm  Taking their measurements, all coax sections are "Q" sections, or impedence transformers. A 75 ohm Q section will transform 50 to 100 ohs OR 100 to 50 ohms. A 35 ohm q section will transform 50 ohms to 25 ohms OR 25 ohm to 50 ohms.  Now, you can start from
 either end if you know the impedence. Since we know this antenna is 50 ohms at the feed point, and from there it goes through a 35 ohm Q section, the impedence at the first tee would be 25 ohms. Since 2 cables are in parallel at this tee, each cable (at that point) must represent 50 ohms (2 50 ohm resistors paralleled give 25 ohms). Now you can take either leg at this point, since the top pair and the bottom pair are identical. Going through the 35 ohm Q section transforms our 50 ohms to 25 ohms. This would be at the upper or lower tee. At this tee, to have 25 ohms, we must have a pair of 50 ohm impedences meeting at the tee. Now we go through a 75 ohm Q section, which raises the impedence to 100 ohms, which should be the impedence of each dipole, if we
 want the thing to match.  Going backwards, start at the dipole and assume 100 ohms. The 75 ohm Q section changes this to 50 ohms. Two 50 ohms in parallel is 25 ohms (at the top or bottom tee). The 35 ohm Q section changes this to 50 ohms, again in parallel with the bottom 2 bays which would also be 50 ohms, which gives 25 ohms. The final 35 ohm Q section transforms the 25 ohms to 50 ohms, to feed our coax of any length.  Now, if we assume each dipole is 50 ohms, here's what happens. The first 75 ohm Q section will increase the impedence to 100 ohms. 2 100 ohms in parallel will give 50 ohms. The 35 ohm Q section will transform that to 25 ohms. Now we have two 25 ohms in parallel, giving us 12.5 ohms going into the last Q
 section. By using Q section calculations, this 35 ohm section would transform the impedence to 100 ohms, or a 2 to 1 match for our 50 ohm coaxial line. Although 2 to 1

Re: [Repeater-Builder] Re: Decibel repeater antenna question-unbalanced radiating loops

2004-04-16 Thread Paul Guello 



I found the link to the information on the Decibel harness. It's still on theKC5DGC web site. The discussion on the list was that it was mostly correct.
http://www.kc5dgc.net/db224.htm

Paul kb9wlc
Coy Hilton [EMAIL PROTECTED] wrote:
The 2 meter 4 bay uses a coaxial matching harness to connect the dipoles to the complete unit. From the connector end it looks like a single antenna with a nominal load of 50 ohms. No baluns are needed.--- In Repeater-Builder@yahoogroups.com, bradley glen <[EMAIL PROTECTED]>wrote: Hi  I have been studying the db stacked array and the bayed array seems to use unbalanced dipoles as the radiators .I have tried to find a close up view of a single dipole so I can confirm my ideas.  If anyone has some good tech info on these antennas I would appreciate the info.  It would make sense to " by-pass " the need of baluns for each dipole -cost and balun loss?  Regards  Brad  ZS5WT Repeater Owner  [EMAIL PROTECTED] 
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Re: [Repeater-Builder] Decibel repeater antenna question-unbalanced radiating loops

2004-04-15 Thread Paul Guello 



There are not any baluns on these antennas. If I remember right, they use 75 ohm coax on each bay (odd multiples of quarter wave length) and 35 ohm coax on the feed (again odd multiples) to match the impedance to 50 ohms. This info was on the group a while back, somebody must still have it.

Paul, kb9wlc

Mathew Quaife [EMAIL PROTECTED] wrote:

Would a close up pic of a DB304 work for your needs, or I have the DB420 there as well.

Mathew
bradley glen [EMAIL PROTECTED] wrote:
HiI have been studying the db stacked array and thebayed array seems to use unbalanced dipoles as theradiators .I have tried to find a close up view of asingle dipole so I can confirm my ideas.If anyone has some good tech info on these antennas Iwould appreciate the info.It would make sense to " by-pass " the need of balunsfor each dipole -cost and balun loss?RegardsBrad ZS5WT Repeater Owner [EMAIL PROTECTED]__Do you Yahoo!?Yahoo! Tax Center - File online by April 15thhttp://taxes.yahoo.com/filing.htmlYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email
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Re: [Repeater-Builder] morse code ID

2004-04-11 Thread Paul Guello 



There's a PIC based id'er project in one of the recent ARRL handbooks. If you are in to building, that one could be build for under $20. The pc board may be available from FAR circuits. Also, there was someone that had a web site that was making one like this for under $30, I can't find the link right now. I'll send it if I locate it. 
The CWID-2 from Hamtronics is $59 in kit form. I picked up an older model off of ebay for under $30.
http://www.hamtronics.com/

Paul, kb9wlc
Rich [EMAIL PROTECTED] wrote:
looking for a morse code add on card for a repeater, 12 VDC, PPT, 6 to 12 hour timer ect. Yahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/Do you Yahoo!?
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Re: [Repeater-Builder] morse code ID

2004-04-11 Thread Paul Guello 



Here's a bunch of links on cw ider's, the first 2 are $30 ider's;
http://www.amateurradioproducts.com/beacon.html

http://www.qth.com/w9xt/beacon.html

The arrl site has the firmware available for download for the PIC based repeater cw ider project by W9/XT. It's called PICCWID.ZIP dated 10/1995 here;
http://www.arrl.org/qexfiles/

http://www.farcircuits.net/voice1.htm

http://k1el.tripod.com/kid.html

http://www.w4dex.com/vhf-eng-cw-id.htm

http://www.jenal.com/cwid1.htm

Paul, kb9wlc

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Re: [Repeater-Builder] Fan audio

2004-04-10 Thread Paul Guello 



Thanks, this makes sense to me, I'll try it. 
It is a portable repeater so I would like the fan to run off of the same DC supply as the rest of the rig. PaulKen Arck [EMAIL PROTECTED] wrote:
At 02:22 PM 4/9/2004 -0400, you wrote:Either run AC fans or use a different power supply than the one running your repeater to power those DC ones---I'm running two 12 Vdc fans in my Micor repeater. I use a 200 uh chokein each lead (+  -) and a 1000 mf cap across them, on the supply side. Ithen use a transistor to control 'em and I have absolutely no noisewhatsoever using this scheme. I suspect part of the problem is that most people forget to treat bothsupply lines and noise gets introduced due to ground loops and stray currents.Ken--President and CTO - Arcom CommunicationsMakers of state-of-the-art repeater controllers and accessories.http://www.ah6le.net/arcom/index.htmlAH6LE/R - IRLP Node
 3000http://www.irlp.netYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/Do you Yahoo!?
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Re: [Repeater-Builder] help with finding a controller

2004-04-09 Thread Paul Guello 



For that price, you may not even find a used one. You could put together a NHRC controller and mount it in a box for under a hundred dollars. Check out their web site;
http://www.nhrc.net/

Paul, KB9WLCMike [EMAIL PROTECTED] wrote:
Does anyone know a few places I can look for a controller that is in a casealready and is the 5.6" in width. The kenwood width. Also, I am looking fora price range of $50.00 to $100.00.Thank you in advance, MikeYahoo! Groups Links* To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/Do you Yahoo!?
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[Repeater-Builder] Fan audio

2004-04-09 Thread Paul Guello 



I put a dc fan on the portable repeater and now I get a slight buz on the audio. Anybody have any idea how to get rid of the buz? I tried putting a capacitor across it and an inductor in series, do I need a larger inductor?
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Re: [Repeater-Builder] WTB: Feed-through caps

2004-01-02 Thread Paul Guello 



Try;
http://www.oselectronics.com/
They have a couple of different ones. 
Also, I have some I could spare. Let meknow the value that you need.

Paul, KB9WLCGeorge Salzmann [EMAIL PROTECTED] wrote:
All,Happy, Merry and all that good stuff. I left my partsbag up at the site a couple weeks ago, and discoveredthat someone else wanted it more than I did.Unfortunately, I had all of my remaining feed-throughcapacitors in that bag. I quickly browsed throughNewark and Mouser's catalogs and didn't see anythingavailable. I'm assuming that someone, somewhere still makes them,or someone, somewhere, has a small stockpile of them.I need something rated to pass 14 VDC @ 8 amps. Anyonehave any to part with, or know of a good source forthese parts?George,AB0SF__Do you Yahoo!?Find out what made the Top Yahoo! Searches of 2003http://search.yahoo.com/top2003Yahoo! Groups LinksTo visit your group on the web, go
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Re: [Repeater-Builder] Transmission line cost performance comparisons

2003-11-27 Thread Paul Guello 



Cable Xperts has a lot of this information on their website. Check it out;
http://www.cablexperts.com/cfdocs/cat.cfm?ItemGroup=1itmsub=0BSKT=0USA_ship=1c=0

Paul, kb9wlcBudd Turner [EMAIL PROTECTED] wrote:


Happy Turkey Day All
Anyone know of a cost and performance comparison done on transmission lines out there? ie. RG-58, RG-8x, RG-8, RG-213, 9913, LMR-200, LMR-400 etc


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Re: [Repeater-Builder] RADIO

2003-11-02 Thread Paul Guello 



Here's a couple of companies to look at:
http://www.ramseyelectronics.com/
http://www.tentec.com/Xcvrkit.htm

Paul, kb9wlcedel [EMAIL PROTECTED] wrote:
Hi I am a young ham, treying to find a homebrew radio to build, should not be to hard, but pref. 2M , and others would be fine toothanxedd Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ 
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