Re: [Repeater-Builder] Re: FS: CSI Controler
There was this one company in the southern California area - had the channel all to themselves - no one else would go near it after listening for a while. They had three repeaters, all on the same frequency pair, scattered around the greater Los Angeles area. They had 116 mobiles, and 18? licensed control points. One of the control points had 14 or 15 desk sets in operation. The channel would start up and going about 6am and quit about 7pm ... each day. Neil "Jim B." wrote: > > skipp025 wrote: > > > > >>Neil McKie <[EMAIL PROTECTED]> wrote: > >>There is a new one ... hasn't been announced > >>as yet ... will be able to handle more than > >>154 subscribers. > > > > > > Some existing tone panels will access non standard > > sub tones and digital codes. If you count the > > non-standard tones, you may end up with more than > > 154 different slots to fill. > > > > If you've got over 5 to 10 commercial customers on > > one repeater, you really need to jump to trunking > > unless you like to hear them complain. LTR is a > > cost effective format. > > I wasn't gonna get into that, but that's VERY true. We used to have > problems on 1 or 2 CR's that only had 3-4 users. They just had that many > radios, and talked that much...school buses are notorious chatters. > > -- > Jim Barbour > WD8CHL > > > Yahoo! Groups Links > > > > 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/
Re: [Repeater-Builder] Re: FS: CSI Controler
I remember when one of our commercial business band repeater frequencies was full. By full, I mean all of the known CTCSS tones were used. As luck would have it, a new customer of a certain radio shop added still another customer to the very busy channel - and told that customer they would have to share the CTCSS tone. That shared tone was with one of our customers. Neil skipp025 wrote: > > > Neil McKie <[EMAIL PROTECTED]> wrote: > > There is a new one ... hasn't been announced > > as yet ... will be able to handle more than > > 154 subscribers. > > Some existing tone panels will access non standard > sub tones and digital codes. If you count the > non-standard tones, you may end up with more than > 154 different slots to fill. > > If you've got over 5 to 10 commercial customers on > one repeater, you really need to jump to trunking > unless you like to hear them complain. LTR is a > cost effective format. > > > Until it is launched, that is all I can say. > > CSI LT-4200 trunking controllers, works great... > lasts a long time. > > > 73, > > Neil McKie > > Cheers Neil, > > skipp > www.radiowrench.com > > > Yahoo! Groups Links > > > > 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/
Re: [Repeater-Builder] GROL - benefit?
It may not have any official benefit to many jobs, but it certainly can be an advantage as an additional factor on a resume. This also applies for an amateur radio license. It demonstrates that you have an interest in radio and have the ability to learn about a subject and pass an aptitude test. It may just be what gets you the interview, but probably will not what will get you the job. 73, Joe, k1ike At 06:12 PM 10/20/2004, you wrote: >howdy all, > > what's the benefit of getting a GROL license? > >~Ben, KB9LFZ All outgoing email scanned with Norton AntiVirus2004. 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/
RE: [Repeater-Builder] MSR2000 Question
No modifications needed, just recrystal the channel elements and retune to your new ham frequency. I have a 100-watt MSR-2000 Repeater I'm just getting ready to sell, it's tuned up in the ham bands on a 444/449 pair. Works great, makes all original specs for receiver sensitivity, transmit power, etc. Make sure you have the service manual. LJ Original Message: - From: Kevin Bednar [EMAIL PROTECTED] Date: Wed, 20 Oct 2004 18:32:47 -0400 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MSR2000 Question Anyone know what mods, if any, are needed to bring a UHF MSR2000 repeater, currently on 460Mhz, down into the 440 range, other than recrystalling? Thanks. Kevin Yahoo! Groups Links mail2web - Check your email from the web at http://mail2web.com/ . 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/
[Repeater-Builder] MSR2000 Question
Anyone know what mods, if any, are needed to bring a UHF MSR2000 repeater, currently on 460Mhz, down into the 440 range, other than recrystalling? Thanks. Kevin 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/
Re: [Repeater-Builder] GROL - benefit?
Required to service avionics and maritime electronics. Chris Wilkie W1LKE (soon to be GROL, too) 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 the Yahoo! Terms of Service.
[Repeater-Builder] GROL - benefit?
howdy all, what's the benefit of getting a GROL license? ~Ben, KB9LFZ __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com 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/
[Repeater-Builder] Andrew price increase
Hello All, Just in time for the holidays! I just found out this morning that Andrew has increased its prices by seven percent. The new prices will be effective November 1, 2004. This includes D. B., RFS, Antenna Specialist all owned by Andrew. They get us every time they can. Sorry to report the bad news to all, Sincerely,Russ Stafford, EE,PE.GROL, PG-GB-01751.HAM, W3CH.GMRS, WPYK-254. Member, RCA. Life member, ARRL 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] GE VHF Cavity identification
Regarding power rating of these cavities, I don't think the DB4002 is rated at 3 Kw continuously. According to the Allen Telecomm Book, they are rated as follows: at .5 db loss400 watts at 1.0 db loss350 watts at 3.0 db loss200 watts Maximum power input (continuous) with insertion loss per cavity. Regarding the question about using them for a duplexer, Because they are bandpass cavities, I don't think you could get enough isolation and separation with these to build a 600 khz spaced duplexer that would be very functional. Looking at the chart, it looks like only about 20 db down about 500 khz away at 1.0 db loss. You would need three of these just to get 60 db of isolation. That would be 120 db from transmitter to the receiver. You would have 3 db of loss plus cable loss and connectors. You can see why the bandpass, bandreject VHF duplexers have much better characteristics. On UHF, it would be a slightly different story. The chart doesn't go out to 5.0 mhz, but extrapolating the 1.0 db loss loop, it looks like 30 down at 5 megs out. Two cavities would give 60 db or so and 2.0 db. I hope this is helpful. Micheal Salem N5MS NØATH wrote: > Hello Dave - I had a couple of these, if you remove the top insulator they > will tune right on up to 148 and above > to where I do not know but I think they are pass only. Correct me if I'm > wrong. I couldn't give them away so after disassembly > I got more from the local scrap yard for the copper than any one had offered > for the cans. They are rated at 3 KW continous > and are solid copper. The inside tuning device is all silver plated / 3" > with fingerstock > > Dave // NØATH > > > - Original Message - > From: "Dave" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, October 19, 2004 12:04 PM > Subject: [Repeater-Builder] GE VHF Cavity identification > > > >> >>I have a few of these "barrels" but I cannot find any model or part >>number on them. The only info I have is a tag ties to the top that >>says 106 - 136Mhz. >> >>I'm wondering if these are notch or pass/reject or whatever cavities. >> >>Here is a 44kb picture of what I have. >> >>http://www.kmcnet.net/Pictures/can.jpg > > > 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/
Re: [Repeater-Builder] Re: FS: CSI Controler
skipp025 wrote: > >>Neil McKie <[EMAIL PROTECTED]> wrote: >>There is a new one ... hasn't been announced >>as yet ... will be able to handle more than >>154 subscribers. > > > Some existing tone panels will access non standard > sub tones and digital codes. If you count the > non-standard tones, you may end up with more than > 154 different slots to fill. > > If you've got over 5 to 10 commercial customers on > one repeater, you really need to jump to trunking > unless you like to hear them complain. LTR is a > cost effective format. I wasn't gonna get into that, but that's VERY true. We used to have problems on 1 or 2 CR's that only had 3-4 users. They just had that many radios, and talked that much...school buses are notorious chatters. -- Jim Barbour WD8CHL 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/
[Repeater-Builder] Re: FS: CSI Controler
> Neil McKie <[EMAIL PROTECTED]> wrote: > There is a new one ... hasn't been announced > as yet ... will be able to handle more than > 154 subscribers. Some existing tone panels will access non standard sub tones and digital codes. If you count the non-standard tones, you may end up with more than 154 different slots to fill. If you've got over 5 to 10 commercial customers on one repeater, you really need to jump to trunking unless you like to hear them complain. LTR is a cost effective format. > Until it is launched, that is all I can say. CSI LT-4200 trunking controllers, works great... lasts a long time. > 73, > Neil McKie Cheers Neil, skipp www.radiowrench.com 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/
Re: [Repeater-Builder] speech inversion or scramble
Thanks for the help all. I have located the manufacture of the device and it is a Transcrypt device. SC20-400series - Original Message - From: "Steve Bosshard (NU5D)" <[EMAIL PROTECTED]> To: Sent: Wednesday, October 20, 2004 4:47 AM Subject: RE: [Repeater-Builder] speech inversion or scramble > > Might look into Selectone or MXCOM or Transcrypt- they made some inversion > scramblers - In a nutshell, the scrambler breaks the vol hi and mic lines. > Looks for an optimum input level from the mic and vol circuits (fixed > attenuators sometimes are needed on both in and out of both mic and vc hi), > and has a line to ena / dis. Also may have lines or a 20 turn pot to set > the break frequency. > > Ssb > > > -Original Message- > From: Brent [mailto:[EMAIL PROTECTED] > Sent: Tuesday, October 19, 2004 11:05 PM > To: Repeater-Builder@yahoogroups.com > Cc: [EMAIL PROTECTED] > Subject: [Repeater-Builder] speech inversion or scramble > > > Hello does anybody have any info on a speech inversion or scramble tha t > [Steve Bosshard (NU5D)] > > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.778 / Virus Database: 525 - Release Date: 10/15/2004 > > > > > > > > Yahoo! Groups Links > > > > > > > > --- > [This E-mail scanned for viruses at TNWEB LLC] > > > --- [This E-mail scanned for viruses at TNWEB LLC] 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/
Re: [Repeater-Builder] FS: CSI Controler
There is a new one ... hasn't been announced as yet ... will be able to handle more than 154 subscribers. Until it is launched, that is all I can say. 73, Neil McKie "Jim B." wrote: > > Bob wrote: > > > > The microprocessor controlled Model TP-154 provides everything > > necessary to convert any receiver and transmitter into a powerful > > high performance private or shared repeater system. > > The TP-154 supports all 50 CTCSS tones and 104 DCS codes and is the > > only panel in the industry capable of handling 154 subscribers > > simultaneously. ... snip ... > -- > Jim Barbour > WD8CHL > 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/
Re: [Repeater-Builder] FS: CSI Controler
Dangit-hit the wrong button=cP Bob wrote: > > The microprocessor controlled Model TP-154 provides everything > necessary to convert any receiver and transmitter into a powerful > high performance private or shared repeater system. > The TP-154 supports all 50 CTCSS tones and 104 DCS codes and is the > only panel in the industry capable of handling 154 subscribers > simultaneously. > I don't recommend doing that-some adjacent tones will false. I've set up a bunch of 154's, and it happens. > The low cost of the TP-154 makes it attractive for use in private > systems of any size. > The ComSpec TP-3200 is about the same price. > PERFORMANCE The COS input allows the TP-154 to operate with > precisely the same receiver sensitivity as the squelch built into > the receiver. Special software algorithms make CTCSS or DCS talk > down practically impossible. > Their 'algorithm' is just putting a delay in the decode drop-out, so it stays open when the internal decoding drops out. This cause the unit to NOT respond to reverse burst. The Com-Spec does. Plus it also generates true reverse burst, where the 154 does "chicken burst". It should also be mentioned that the ComSpec is less then half the size. You can fit 3 across in a 1 rack unit high space. You can only fit one 154 in that space. -- Jim Barbour WD8CHL 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/
Re: [Repeater-Builder] FS: CSI Controler
Bob wrote: > > The microprocessor controlled Model TP-154 provides everything > necessary to convert any receiver and transmitter into a powerful > high performance private or shared repeater system. > The TP-154 supports all 50 CTCSS tones and 104 DCS codes and is the > only panel in the industry capable of handling 154 subscribers > simultaneously. > > The low cost of the TP-154 makes it attractive for use in private > systems of any size. > > PERFORMANCE The COS input allows the TP-154 to operate with > precisely the same receiver sensitivity as the squelch built into > the receiver. Special software algorithms make CTCSS or DCS talk > down practically impossible. > > HOG TIME AND PENALTIES A maximum talk time and no-talk penalty time > is globally programmable and can be enabled or disabled on a per > user basis. This gives you some control over the "air time hogs". > > PROGRAMMING All per user and globally programmable features can be > remotely programmed over the air or locally programmed by plugging > any DTMF telephone into the rear of the TP-154. The telephone > becomes your local programming keyboard. > > FRONT PANEL DISPLAY In operate mode the front panel display shows > the CTCSS or DCS code of the current user. In local programming > mode, the display shows all selections you enter and allows > verification of previously entered data. > > REMOTE DATA DISPLAY You can immediately verify all over-the-air > programming by displaying the TP-154's automatic DTMF transpond on a > CD-2 Communications Decoder. In addition to the front display, the > CD-2 also outputs the transponded data on an RS-232 serial port. By > using the CD-2P application for your PC or laptop computer, all > programming data for each of your TP-154's can be downloaded and > stored in your computer for future reference. > > STANDARD FEATURES > > CTCSS Trak for ultimate CTCSS sensitivity > > 38 or 50 CTCSS Tones > > 104 DCS Codes > > Supports 154 Subscribers > > Remotely DTMF Programmable > > DTMF-DTMF Regeneration > > Four Digit Front Panel Display > > Front Panel Status LEDs > > Local and Remote DTMF Programming > > Low Power Mode > > COS Input with Polarity Select > > PER USER PROGRAMMABLE FEATURES > > Hang time > > Cross Tone and Code > > CW ID > > Courtesy Beep > > Barge-in > > Deadbeat enable/disable > > Reserve Tone > > Hog Penalty > > DCS/CTCSS During hang time > > SYSTEM PROGRAMMABLE FEATURES > > Hang time > > Anti-kerchunk time > > Stuck Mic. Activity Timer > > DCS polarity > > System CW ID > > CW ID Speed > > CTCSS/DCS during hang time > > COR or DCS/CTCSS Operate > > Programming Mode Access Code > > Carrier drop delay > > ALL FEATURES ARE USER PROGRAMMABLE/SELECTABLE > SPECIFICATIONS > AUDIO IN > Input level 10 MV - 2 V P-P > Input impedance 220K AC coupled > > AUDIO OUT > Output level 0-5 V P-P > Output impedance 1K AC coupled > Distortion <.5% THD Freq. response 300 3000 HZ DCS OUT > Output level 0-5 V P-P > Output impedance 5K AC coupled > No. of codes 83 EIA plus 21 additional > Decode Time <200 MS Typ. CTCSS OUT Output level 0-5 V P- > P Output impedance 5K AC coupled No. of tones 38 EIA plus 12 > additional Decode Time <200 MS Typ. MISCELLANEOUS Programming access > code 6 digits PTT keying Pull to gnd. or pull to +12 VDC Repeat > audio filtering 6 pole high pass Temperature range 30 C to +80 C > Power 12-15 VDC @ 150 Ma. MECHANICAL Size 1.75 x 19 x 7.5 in. Weight > 4 lbs. CTCSS CODES 38 EIA Tones 12 Non Standard Tones 50 Total CTCSS > Tones > > Note: The TP-154 is normally supplied with the 38 Standard EIA CTCSS > tones and 104 DCS codes. Please specify if you prefer the 50 CTCSS > and 104 DCS version. The 50 CTCSS version is only recommended if one > of the following conditions apply: > > > You need one of the non-standard tones. > A co-channel user uses a non-standard tone adjacent to a standard > tone which you are using. (In other words, you need to reject a non- > standard tone.) > DCS CODES > 83 EIA Codes > 21 Additional Codes > -- > 104 Total DCS Codes > > With manual $250.00 > Email Bob [EMAIL PROTECTED] > -- Jim Barbour WD8CHL 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/
Re: [Repeater-Builder] preamp question
I would say as long as you do not have any future neighbor Transmitter sites. I would at least do a research by getting ahold of someone who may be a frequency coordinator for commercial as well broadcast services they are more in tune of whats happening and find out any future talks of springing a stick over by your site. If you don't need to tune out something thats not there, then you are in business. MH - Original Message - From: "stanleyradio" <[EMAIL PROTECTED]> To: Sent: Monday, October 18, 2004 3:37 PM Subject: [Repeater-Builder] preamp question > > > Does anyone ever consider using a preamp (ARR GaAsFET) on 440 with > only a 6-cavity notch duplexer (Cellwave)? I know that this makes > the receiver susceptable to desense from other interference, but my > site is so extremely remote that my only concern is just keeping my > own Tx out. I was just wondering if for an extremely quiet site, a > bandpass filter between the notches and the preamp is worth the added > insertion loss. > > Thanks, > Dayne Olmstead > KD7JAH > > > > > > > > > Yahoo! Groups Links > > > > > > > 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/
Re: [Repeater-Builder] GE VHF Cavity identification
Hey "Q" !!! Captain Pickard wants your call signQ <[EMAIL PROTECTED]> wrote: I wish I could find some of these cheap...I need some!- Original Message -From: NØATH <[EMAIL PROTECTED]>To: Sent: Tuesday, October 19, 2004 9:22 PMSubject: Re: [Repeater-Builder] GE VHF Cavity identification>> Hello Dave - I had a couple of these, if you remove the top insulator they> will tune right on up to 148 and above> to where I do not know but I think they are pass only. Correct me if I'm> wrong. I couldn't give them away so after disassembly> I got more from the local scrap yard for the copper than any one hadoffered> for the cans. They are rated at 3 KW continous> and are solid copper. The inside tuning device is all silver plated / 3"> with fingerstock>> Dave // NØATH>>> - Original Message -> From: "Dave" <[EMAIL PROTECTED]>> To: > Sent: Tuesday, October 19, 2004 12:04 PM> Subject: [Repeater-Builder] GE VHF Cavity identification>>> >> >> > I have a few of these "barrels" but I cannot find any model or part> > number on them. The only info I have is a tag ties to the top that> > says 106 - 136Mhz.> >> > I'm wondering if these are notch or pass/reject or whatever cavities.> >> > Here is a 44kb picture of what I have.> >> > http://www.kmcnet.net/Pictures/can.jpg Yahoo! Groups Links>>>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!?vote.yahoo.com - Register online to vote today! 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] GE VHF Cavity identification
I wish I could find some of these cheap...I need some! - Original Message - From: NØATH <[EMAIL PROTECTED]> To: Sent: Tuesday, October 19, 2004 9:22 PM Subject: Re: [Repeater-Builder] GE VHF Cavity identification > > Hello Dave - I had a couple of these, if you remove the top insulator they > will tune right on up to 148 and above > to where I do not know but I think they are pass only. Correct me if I'm > wrong. I couldn't give them away so after disassembly > I got more from the local scrap yard for the copper than any one had offered > for the cans. They are rated at 3 KW continous > and are solid copper. The inside tuning device is all silver plated / 3" > with fingerstock > > Dave // NØATH > > > - Original Message - > From: "Dave" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, October 19, 2004 12:04 PM > Subject: [Repeater-Builder] GE VHF Cavity identification > > > > > > > > I have a few of these "barrels" but I cannot find any model or part > > number on them. The only info I have is a tag ties to the top that > > says 106 - 136Mhz. > > > > I'm wondering if these are notch or pass/reject or whatever cavities. > > > > Here is a 44kb picture of what I have. > > > > http://www.kmcnet.net/Pictures/can.jpg > > > > > > > > Yahoo! Groups Links > > > > > > > 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/
[Repeater-Builder] RCD1SH
GE RCD1SH DC Remote. Excellent condition. Rare. For sale @ $130.00 Steve. 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/
RE: [Repeater-Builder] speech inversion or scramble
Might look into Selectone or MXCOM or Transcrypt- they made some inversion scramblers - In a nutshell, the scrambler breaks the vol hi and mic lines. Looks for an optimum input level from the mic and vol circuits (fixed attenuators sometimes are needed on both in and out of both mic and vc hi), and has a line to ena / dis. Also may have lines or a 20 turn pot to set the break frequency. Ssb -Original Message- From: Brent [mailto:[EMAIL PROTECTED] Sent: Tuesday, October 19, 2004 11:05 PM To: Repeater-Builder@yahoogroups.com Cc: [EMAIL PROTECTED] Subject: [Repeater-Builder] speech inversion or scramble Hello does anybody have any info on a speech inversion or scramble tha t [Steve Bosshard (NU5D)] --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.778 / Virus Database: 525 - Release Date: 10/15/2004 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/
[Repeater-Builder] speech inversion or scramble
Hello does anybody have any info on a speech inversion or scramble tha t i have here. a guy took it out of one radio and needs me to instll it into another and I have no clue what make it is.. if anybody has installed or install these type of units please contact me and i will send a picture to you. and maybe you can help me out in id'ing the unit.. thanks Brent --- [This E-mail scanned for viruses at TNWEB LLC] 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/
[Repeater-Builder] Re: WACOM WP-641 Duplexer
Any leakage in your shield, in your system, has the potential to KILL your receiver. WHY TAKE A CHANCE? I disagree that double shielding is "over blown". I have enough problems with a receive sensitivity of .25uV for 20DB quieting on the antenna side of my duplexer, with RG400 double shielded silver plated connecting to 35 feet of Super Flex, to take any chances with inferior cable. 73 AC0Y --- In Repeater-Builder@yahoogroups.com, Bob Dengler <[EMAIL PROTECTED]> wrote: > At 10/16/2004 07:31 PM, you wrote: > > > >--- In Repeater-Builder@yahoogroups.com, James <[EMAIL PROTECTED]> wrote: > > > If you ever find a piece of coax on a duplexer that is not double > >shielded at the very least, REPLACE IT ! IT'S A PIECE OF CRAP ! > > Incorrect; double-shielding is overblown. I once ran an isolation test > using a pair of 6 ft. Pomona RG-58 test cables tightly twisted together to > maximize coupling between the two cables. The measured isolation was over > 85 dB through 500 MHz, in the noise of the test instrument. This may be > why Phelps Dodge & others originally used RG-8 jumpers on their duplexer, > at least until the braid began to oxidize. > > What's important is the quality of the shield, not quantity. However, you > will be hard-pressed to find any single-shielded coax with silver plating, > so I suppose the point is moot. If the coax has silver-plated braid, it's > double-shielded. If it's superflex, it's also 100% shielded. > > Bob NO6B 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/
Re: [Repeater-Builder] GE VHF Cavity identification
Oh Dave I forgot to mention - I know where there is a rack of these cans on a giant city owned commercial outfit in Kansas City Mo. There must be a dozen of them all tied together. Was at a customer site for a different reason so didn't ask to many questions. Dave // NØATH 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/
Re: [Repeater-Builder] GE VHF Cavity identification
Hello Dave - I had a couple of these, if you remove the top insulator they will tune right on up to 148 and above to where I do not know but I think they are pass only. Correct me if I'm wrong. I couldn't give them away so after disassembly I got more from the local scrap yard for the copper than any one had offered for the cans. They are rated at 3 KW continous and are solid copper. The inside tuning device is all silver plated / 3" with fingerstock Dave // NØATH - Original Message - From: "Dave" <[EMAIL PROTECTED]> To: Sent: Tuesday, October 19, 2004 12:04 PM Subject: [Repeater-Builder] GE VHF Cavity identification > > > I have a few of these "barrels" but I cannot find any model or part > number on them. The only info I have is a tag ties to the top that > says 106 - 136Mhz. > > I'm wondering if these are notch or pass/reject or whatever cavities. > > Here is a 44kb picture of what I have. > > http://www.kmcnet.net/Pictures/can.jpg 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/
Re: [Repeater-Builder] GE VHF Cavity identification
Dave: I have a couple of these. They are DB4002. However, the one you have sounds like it is for the aircraft band, but it doesn't look any different than mine. According to the Allen Telecom Catalog 24 they are located on page 123. They are listed in two band passes for VHF: DB4002-A 118-148 Mhz DB4002-B 148-174 Mhz It is generally a pass cavity. There should be connectors on either ends. I can remove the loops from mine by unscrewing the SO-239 connectors to the cavity. The size of the loops determines the loss and selectivity. They have loops for .5, 1.0, and 3.0 db. The selectivity at 10 db down for .5 db is 600 Khz (300 Khz either side of center). 1.0 db loss, 375 Khz, and 3.0 db, 150 khz. I used to have drawing that DB faxed to me for the loops. May still have them. You can also use them on 400 Mhz. These are DB4002-C 406 - 420 Mhz DB4002-D 450 - 512 Mhz I used one of the ones I have as a bandpass filter in front of a UHF Gaasfet preamp (Out of the duplexer, into the cavity, then into the preamp, then into the receiver). It worked very well. The chart shows that at 1.0 db, 1 meg away, it is 25 db down. 2 megs away it is 32 db down. I would say put them on a signal generator and into a receiver and see if they will tune. I hope this is helpful. Micheal Salem N5MS Dave wrote: > > I have a few of these "barrels" but I cannot find any model or part > number on them. The only info I have is a tag ties to the top that > says 106 - 136Mhz. > > I'm wondering if these are notch or pass/reject or whatever cavities. > > Here is a 44kb picture of what I have. > > http://www.kmcnet.net/Pictures/can.jpg > > Since I have a few of these, I'm thinking I might be able to make a > duplexer with them any thoughts? > > Thanks > > Dave / N9NLU > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > 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/
RE: [Repeater-Builder] GE VHF Cavity identification
Oops. I don't even seem to know my own call-sign. It should be signed Tony, VE3DWI -Original Message- From: Tony lelieveld [mailto:[EMAIL PROTECTED] Sent: October 19, 2004 20:30 To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] GE VHF Cavity identification -Original Message- From: Dave [mailto:[EMAIL PROTECTED] Sent: October 19, 2004 13:05 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] GE VHF Cavity identification >I'm wondering if these are notch or pass/reject or whatever cavities< Dave. Since it has two connectors, one each on opposite sides, my bet would be that it is a band-pass cavity. To make a duplexer with band-pass cavities for a 2 meter repeater is nearly impossible. The split of 600 kHz is too close. If you have enough of them you could make one by using two in reject mode and one in band-pass mode in each leg of the duplexer. Put a "T" connector on one side and leave the other side unused. This way u can use it as a reject cavity. Will they tune up to 146 MHz is the question too. Tony VE3DI --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 Yahoo! Groups Links --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 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/
RE: [Repeater-Builder] GE VHF Cavity identification
-Original Message- From: Dave [mailto:[EMAIL PROTECTED] Sent: October 19, 2004 13:05 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] GE VHF Cavity identification >I'm wondering if these are notch or pass/reject or whatever cavities< Dave. Since it has two connectors, one each on opposite sides, my bet would be that it is a band-pass cavity. To make a duplexer with band-pass cavities for a 2 meter repeater is nearly impossible. The split of 600 kHz is too close. If you have enough of them you could make one by using two in reject mode and one in band-pass mode in each leg of the duplexer. Put a "T" connector on one side and leave the other side unused. This way u can use it as a reject cavity. Will they tune up to 146 MHz is the question too. Tony VE3DI --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.742 / Virus Database: 495 - Release Date: 19/08/2004 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/
