Re: [Repeater-Builder] Somewhat OT - an interesting antenna design
Wow, What an interesting artical. A lot of information on the early days of TV in the US. I was however interested in the Cone Dipole antenna they had display in a couple of the photos. I did a quick search for cone dipole on google but came back with no results. Would be interested in sourcing information on this antenna and maybe it's construction. Will try another indepth search and see what comes to light. If anyone has any information could they pass it to me directly, save causing issues on the group as it is OT. Thanks Kevin, ZL1KFM. Get Skype and call me for free. - Original Message - From: Mike Morris WA6ILQ To: Repeater-Builder@yahoogroups.com Sent: Monday, February 16, 2009 3:32 PM Subject: [Repeater-Builder] Somewhat OT - an interesting antenna design One of the major TV stations here in Los Angeles is KTLA, on channel 5. Klaus Landsberg, a ham (but call sign unknown) was the first chief engineer, and designed the station back in the 1940s. I recently found a writeup of the early days, and page 2 shows the early antenna design. Klaus came up with a very interesting way to get a wide bandwidth: Look at the bottom of page 2 of this file: http://web.mac.com/zcleve/KlausTribute/KLStories_files/Silva-RoseParade.pdf Another image of the aural antenna is the second image from the bottom here: http://www.earlytelevision.org/w6xyz.html The bottom paragraph of text is incorrect. The hoop antenna is mounted above the platform visible in the bottom image. Other info here: http://web.mac.com/zcleve/KlausTribute/KlausHome.html and http://web.mac.com/zcleve/KlausTribute/KLStories.html The Stan Chambers writeup is especially interesting. For those that are unaware of it, Stan has been continuously employed by KTLA since 1947 - that's over 60 years at the same station. He's over 80 years old and still goes out on field news assignments.Can anybody in broadcasting top that? He's seen it all - from the early spinning disk experiments to seeing Klaus Landsberg - a ham - invent the studio to transmitter link to the first flying remote (the Telecopter in 1958) to today's HD cameras that fit in your hand. ( http://www.tech-notes.tv/Archive/tech_notes_139.pdf starting on page 11 ) His 1947 live reports from a electroplating plant explosion become the world's first on-the-spot news coverage. His 1949 on-scene continuous 27½-hour report of the attempt to rescue 3-year-old Kathy Fiscus from an abandoned 14 inch well demonstrated how TV could show live news - until then TV was just evening entertainment. (his grandson, Jaime Chambers, became a reporter at KTLA in 2003, and has two children of his own) Mike sparc_nz Description: Binary data
Re: [Repeater-Builder] Somewhat OT - an interesting antenna design
I believe that the cone dipole was the predecessor for today's bow-tie design. Chuck WB2EDV - Original Message - From: Gmail - Kevin, Natalia, Stacey Rochelle To: Repeater-Builder@yahoogroups.com Sent: Tuesday, February 17, 2009 3:06 AM Subject: Re: [Repeater-Builder] Somewhat OT - an interesting antenna design Wow, What an interesting artical. A lot of information on the early days of TV in the US. I was however interested in the Cone Dipole antenna they had display in a couple of the photos. I did a quick search for cone dipole on google but came back with no results. Would be interested in sourcing information on this antenna and maybe it's construction. Will try another indepth search and see what comes to light. If anyone has any information could they pass it to me directly, save causing issues on the group as it is OT. Thanks Kevin, ZL1KFM.
Re: [Repeater-Builder] Need some advice- Tone and ID for repeater
Paul Plack wrote: As has been mentioned elsewhere, the 20 WPM limit in the US only applies to a device used exclusively for ID, a loophole that allows you to send at whatever speed you want with a modern repeater controller. Right. Information other then the callsign can be sent at any speed. But I've never understood the point in trying to bury the ID or get it over with. It's not like it prevents anyone from continuing the conversation. I've always used 20 WPM or less. It will if it's set to a high enough pitch and/or level.
Re: [Repeater-Builder] Re: Anyone ever interface a CSI TP3200 tone panel to an external controller?
Mike Pugh wrote: tsoli...@tir.com wrote: Program the hang time in the TP-38 to zero and connect it to the RC-850 controller as shown below. I'd like to see this diagram as well, since I had been thinking about this for quite some time... However, at least on my copy of the original message, there is no diagram below Can it be sent again, or be sent directly to me? Thanks in advance. Mike Pugh KA4MKG If you've ever hooked a normal ham controller to a repeater, you don't need a drawing. The PTT output from the tone panel would go to the CTCSS input on the controller. The encode tone out would go wherever the CTCSS injection is on the exciter. Get COS for the controller the way you normally would from the rx. Run raw discriminator audio to the rx input of the tone panel. Transmit audio can either be taken from the tone panel or directly from the rx the way you normally would if you didn't have the tone panel. About as simple as it gets.
Re: [Repeater-Builder] Re: Need some advice- Tone and ID for repeater
--- In Repeater-Builder@yahoogroups.com, Peter Summerhawk commcon...@... wrote: Morning Crew, I need some suggestions on what tone frequency people are using for the ID on their repeater as well as speed for the ID. I am using a repeater controller that I can adjust the frequency and speed of the system. I want to use something that can be heard but don't want it to be to high so they users go deaf or have the speed to fast as its all a blur in the id. Suggestions? Thanks Peter Summerhawk-N0WRE It's pretty subjective. First, for amateur, FCC says no more than 20 WPM for an automatic ID. So set it for that-you want it to go out as fast as you can to get it out of the way. Tone pitch is VERY much a matter of taste. I use 520 Hz for some, and for ones that I want to be as unobtrusive as possible, the S-Com's will let you go down to 260 Hz. It's almost inaudible, but meets the rules because if you listen with a radio that does NOT have CTCSS filtering, it's quite copyable. Deviation for a CW ID should be around +/- 1-1.5 KHz. More then that will interfere with voice intelligibility.
Re: [Repeater-Builder] Need some advice- Tone and ID for repeater
Kris Kirby wrote: On Sat, 14 Feb 2009, Peter Summerhawk wrote: Morning Crew, I need some suggestions on what tone frequency people are using for the ID on their repeater as well as speed for the ID. I am using a repeater controller that I can adjust the frequency and speed of the system. I want to use something that can be heard but don't want it to be to high so they users go deaf or have the speed to fast as its all a blur in the id. I use 2600Hz at 13 WPM, because my ID'er is sending the PL tone information. 2600Hz because the repeater is a literal hack between two GE Rangrs, a 2N, and an ID-8. And since I used it to test the deviation, it's around 2.5KHz, as the radio max deviation is set to about 3.0KHz. ouch! I think my eardrums are bleeding a bit just thinking about that. The max dev on VHF and UHF repeaters should be set for between +/- 4.5 to 5 KHz. Id's need to be 'in the background' so it doesn't interfere with voice. Remember-the whole reason it's there is to repeat what someone is saying. Anything that interferes with that is a problem.
Re: [Repeater-Builder] New 10mtr Repeater Active from Auckland, NZ (ZL Land) - Slightly OT
Gmail - Kevin, Natalia, Stacey Rochelle wrote: Hi Eric, In responce to your email. In NZ the regulary body (Govt) states that access to any Amateur Radio installion must be available to all access. What this means to us that we can only use carrier access, no tones like in a CTCSS system. meh-CTCSS does not prohibit anyone from accessing a repeater, if you use standard EIA tones. But yeah, if they say specifically that you can't use CTCSS, then that's that. Not trying to pick on you. Just get tired of the 'PL means closed' attitude, worse when it comes from the gov't.
Re: [Repeater-Builder] Fw: freg
Mike Morris WA6ILQ wrote: Maybe we can put a 6m repeater on the channel 2 tower? It's 970 feet tall on top of a 5,000 foot mountain, and the chief engineer is ham-friendly... Mike WA6ILQ Now THAT would be cool! Build up something that runs about 1300-1400W out (properly metered of course), and run remote rx's all over the place with a voter. The antenna should work OK on a higher pair, above 52.5 or 53. That'd be a screamer!
Re: [Repeater-Builder] Re: Duplexer Cable Length / Recomendations
Trevor wrote: And I thought this was a good place to get help - I guess it's just like QRZ or hamsexy - A bunch of jackasses that have egos larger than Motorola. hmm-no wonder you don't get answers with that attitude.
RE: [Repeater-Builder] Micor Repeater
So do I. 12 chassis in all. Some PAs. No power supplies or cabinets. Many cards. These are Community Repeaters - designed for multiple PL access, such as GMRS, etc. Mail direct to: n9wys (at) ameritech (dot) net for info. Mark - N9WYS From: Repeater-Builder@yahoogroups.com On Behalf Of Maire-Radios FYI have a number UHF 460 to 470 band Unified chassis repeaters for sale very low cost some working some for parts. John - Original Message - From: Kevin Custer mailto:kug...@kuggie.com To: Repeater-Builder@yahoogroups.com Sent: Monday, February 16, 2009 5:54 PM Subject: Re: [Repeater-Builder] Micor Repeater Ralph S. Turk wrote: Kevin Unified Chassis meaning TX on top Control Shelf and Rx etc on bottom. Most chassis' were set-up this way, so please read on - and answer again. A Unified Chassis is a chassis that is not made up of separate rack-mounted units. The Non Unified Chassis is exactly what it says it is. Each of the units (the TX, control shelf, and RX) are separate and connected together electrically with a 50 conductor ribbon cable. The Unified Chassis has a Back-Plane Board that is tall enough to 'reach' the TX and RX compartments, and no ribbon cable exists. The Unified Chassis is easily identified as having sloping covers on the TX and RX. Here's a picture of a Unified Chassis: http://www.kuggie.com/ahra/pix/DSC00027.jpg http://www.kuggie.com/ahra/pix/DSC00027.jpg Thanks, Kevin
[Repeater-Builder] Suggested value for caps in 222Mhz duplexers
We are in the process of converting some cellwave pass cans for pass/reject. My thought is to add a series capacitor to the loop and use a single loop per can. Any suggestions for the value of the piston capacitor to use at this frequency? I need to order or scrounge some up for experimenting. 73, Joe, K1ike
Re: [Repeater-Builder] Suggested value for caps in 222Mhz duplexers
2-10pF johansen style is what I used. If you have any GE channel elements lying around I suggest you try the trimmer caps from there. On Tue, Feb 17, 2009 at 8:55 AM, Joe k1ike_m...@snet.net wrote: We are in the process of converting some cellwave pass cans for pass/reject. My thought is to add a series capacitor to the loop and use a single loop per can. Any suggestions for the value of the piston capacitor to use at this frequency? I need to order or scrounge some up for experimenting. 73, Joe, K1ike Yahoo! Groups Links
Re: [Repeater-Builder] Fw: freg
At 2/17/2009 07:13, you wrote: Mike Morris WA6ILQ wrote: Maybe we can put a 6m repeater on the channel 2 tower? It's 970 feet tall on top of a 5,000 foot mountain, and the chief engineer is ham-friendly... Mike WA6ILQ Now THAT would be cool! Build up something that runs about 1300-1400W out (properly metered of course), and run remote rx's all over the place with a voter. The antenna should work OK on a higher pair, above 52.5 or 53. That'd be a screamer! Don't we already have something like that around here on 53.62? Bob NO6B
Re: [Repeater-Builder] Re: Need some advice- Tone and ID for repeater
At 2/17/2009 06:49, you wrote: --- In Repeater-Builder@yahoogroups.com, Peter Summerhawk commcon...@... wrote: Morning Crew, I need some suggestions on what tone frequency people are using for the ID on their repeater as well as speed for the ID. I am using a repeater controller that I can adjust the frequency and speed of the system. I want to use something that can be heard but don't want it to be to high so they users go deaf or have the speed to fast as its all a blur in the id. Suggestions? Thanks Peter Summerhawk-N0WRE It's pretty subjective. First, for amateur, FCC says no more than 20 WPM for an automatic ID. See my previous post on this subject. Interesting how different controllers/ID boards seem to have different definitions of 20 WPM, as they all sound like they're at different speeds. I set the CW on my controllers to the same speed as the Autocode ID boards, as those sound the fastest. Bob NO6B
Re: [Repeater-Builder] Somewhat OT - an interesting antenna design
Try: Conical Antenna or Bi-Conical Antenna Gmail - Kevin, Natalia, Stacey Rochelle wrote: Wow, What an interesting artical. A lot of information on the early days of TV in the US. I was however interested in the Cone Dipole antenna they had display in a couple of the photos. I did a quick search for cone dipole on google but came back with no results. Would be interested in sourcing information on this antenna and maybe it's construction.
[Repeater-Builder] Re: Need some advice- Tone and ID for repeater
But I've never understood the point in trying to bury the ID or get it over with. It's not like it prevents anyone from continuing the conversation. In work-horse applications most people simply want to get the CW ID out of the way. Especially at locations where multiple CW audio is received and resent mixed. Linking is a great example where a fast non-obtrusive CW ID is better applied. If the CW ID frequency and level are not well chosen values, it can easily and does often interfere with an ongoing conversation (exchange of information). cheers, s.
[Repeater-Builder] Redesign to discuss
I would like to talk to somebody with experience in tx/rx design and high speed circuit design who would be willing to execute a trade-secret agreement. I have an idea which if it is implementable might revolutionize the whole repeater concept. I have had one opinion that it is not implementable, but I am not sure that guy is right, so I would like to have a chat off-list with a circuit designer, preferably one who is up on the latest in ss devices as I know the older ones won't do the job. -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] MPT Trunked Radio in CB Band
At 09:53 PM 02/16/09, you wrote: Hi Everybody, Good day. Does anybody know about the a portable/mobile and basestation MPT trunked radio operating in citizen band (CB)? Best Regards, Kent Chong What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US. CB in NZ is somewhere in the 470 region using FM and MPT is a bit more common in AU and NZ. Don't forget - the first two Ws in WWW is World Wide, and this group has over 4300 members in over a dozen countries. Mike WA6ILQ
Re: [Repeater-Builder] Redesign to discuss
On Tue, 17 Feb 2009, Dave Gomberg wrote: I would like to talk to somebody with experience in tx/rx design and high speed circuit design who would be willing to execute a trade-secret agreement. I have an idea which if it is implementable might revolutionize the whole repeater concept. I have had one opinion that it is not implementable, but I am not sure that guy is right, so I would like to have a chat off-list with a circuit designer, preferably one who is up on the latest in ss devices as I know the older ones won't do the job. It's been done. All of it, before. You're probably looking at using DSPs to implement a transponder as a repeater. The biggest problem with repeaters is ego. The height of the measured guassian pulse on the spectrum analyzer as compared to anatomy. That being said, I'd be happy to review it from a go/no-go perspective, sans agreement. I'm not in it to make money, I'm just an idea rat. -- Kris Kirby, KE4AHR k...@catonic.us But remember, with no superpowers comes no responsibility. --rly
Re: [Repeater-Builder] Need some advice- Tone and ID for repeater
...Information other then the callsign can be sent at any speed... ...Interesting how different controllers/ID boards seem to have different definitions of 20 WPM... Creative interpretations aside, there's nothing vague about 97.119(b)(1). If the device (in my case a microprocessor-controlled tone generator) used to generate my ID is also used for anything else, whether it's courtesy beeps, paging tones or doorbell sound effects, I'm exempt from the 20 WPM limit on the ID. It would be completely black-and-white, if not for the FCC's subsequent interpretation of audio CW as a phone mode, which would seem to eliminate any relevance of the CW speed limit completely. On the definition of words per minute, I would expect to have to justify my CWID speed to the FCC based on an argument more scientific than they're all different...I chose the one that's fastest. The 50-time-unit PARIS appears to be the standard word in the US, while a version with slightly shorter inter-word spacing is used in some other countries. If you set your controller for 20 WPM, and its output is actually faster than 20 WPM, take it up with the programmer of the chip, or set it for 17, or 18, or whatever produces a measureable 20 WPM. This is all highly theoretical. The early Icom ham repeaters were shipped with the same uP controller as the comercial repeaters, ID-ing at about 35 WPM, and it was not adjustable by the user. I heard lots of grousing about it on the air back in the late 80's when these machines came out, but was anyone ever actually cited? Does the FCC have time to enforce a CW speed limit on IDs, when other modes are allowed to ID using techniques which can only be decoded by computers? I doubt it. If the pitch or deviation of the ID are disruptive, that's a problem regardless of the speed. Modern controllers allow separate pitch settings for polite and impolite IDs. If you choose settings which allow users to be heard over the polite ID, the speed at which it's sent shouldn't be a factor. When I hear a CW ID sent really fast, I can't help wondering why someone's trying to conceal his callsign. I guess it's also possible modern hams find CW an embarrassment. I will at least admit that a CWID at ANY speed is probably undecipherable to any recently-licensed ham. Whatever the case, I find the CWID an interesting and subtle clue to the operator's philosophy on operating his repeater. They could even be entertaining, if your call was something like K5EE or W5ESE. It's part of your machine's signature, your fist, in a way. I'll continue to enjoy hearing the CW until everything goes digital, at which time audible IDs will probably be declared obsolete. By then, perhaps many of us will also be declared obsolete! 73, Paul, AE4KR
Re: [Repeater-Builder] Need some advice- Tone and ID for repeater
Some of us choose to go with the faster CWID, coupled with very short courtesy tones, no shelf time and very short hang times to further reduce the duty cycle of our portable event/disaster repeaters... On Tue, Feb 17, 2009 at 12:59 PM, Paul Plack pl...@xmission.com wrote: ...Information other then the callsign can be sent at any speed... ...Interesting how different controllers/ID boards seem to have different definitions of 20 WPM... Creative interpretations aside, there's nothing vague about 97.119(b)(1). If the device (in my case a microprocessor-controlled tone generator) used to generate my ID is also used for anything else, whether it's courtesy beeps, paging tones or doorbell sound effects, I'm exempt from the 20 WPM limit on the ID. It would be completely black-and-white, if not for the FCC's subsequent interpretation of audio CW as a phone mode, which would seem to eliminate any relevance of the CW speed limit completely. On the definition of words per minute, I would expect to have to justify my CWID speed to the FCC based on an argument more scientific than they're all different...I chose the one that's fastest. The 50-time-unit PARIS appears to be the standard word in the US, while a version with slightly shorter inter-word spacing is used in some other countries. If you set your controller for 20 WPM, and its output is actually faster than 20 WPM, take it up with the programmer of the chip, or set it for 17, or 18, or whatever produces a measureable 20 WPM. This is all highly theoretical. The early Icom ham repeaters were shipped with the same uP controller as the comercial repeaters, ID-ing at about 35 WPM, and it was not adjustable by the user. I heard lots of grousing about it on the air back in the late 80's when these machines came out, but was anyone ever actually cited? Does the FCC have time to enforce a CW speed limit on IDs, when other modes are allowed to ID using techniques which can only be decoded by computers? I doubt it. If the pitch or deviation of the ID are disruptive, that's a problem regardless of the speed. Modern controllers allow separate pitch settings for polite and impolite IDs. If you choose settings which allow users to be heard over the polite ID, the speed at which it's sent shouldn't be a factor. When I hear a CW ID sent really fast, I can't help wondering why someone's trying to conceal his callsign. I guess it's also possible modern hams find CW an embarrassment. I will at least admit that a CWID at ANY speed is probably undecipherable to any recently-licensed ham. Whatever the case, I find the CWID an interesting and subtle clue to the operator's philosophy on operating his repeater. They could even be entertaining, if your call was something like K5EE or W5ESE. It's part of your machine's signature, your fist, in a way. I'll continue to enjoy hearing the CW until everything goes digital, at which time audible IDs will probably be declared obsolete. By then, perhaps many of us will also be declared obsolete! 73, Paul, AE4KR
Re: [Repeater-Builder] Redesign to discuss
At 11:17 2/17/2009, Kris Kirby wrote: It's been done. All of it, before. You're probably looking at using DSPs to implement a transponder as a repeater. I am not sure I understand this idea. Do you have a web site on it or -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] MPT Trunked Radio in CB Band
By Kent's email domain, I'd gather that he's in Singapore. I'm not sure what the unlicensed/low restriction band may be over there, but it's probably in the 450-470 range. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CA-OES 51-507 http://smokeybehr.blogspot.com http://www.myspace.com/smokeybehr - Original Message From: Mike Morris WA6ILQ wa6...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Tuesday, February 17, 2009 10:32:15 AM Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band At 09:53 PM 02/16/09, you wrote: Hi Everybody, Good day. Does anybody know about the a portable/mobile and basestation MPT trunked radio operating in citizen band (CB)? Best Regards, Kent Chong What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US. CB in NZ is somewhere in the 470 region using FM and MPT is a bit more common in AU and NZ. Don't forget - the first two Ws in WWW is World Wide, and this group has over 4300 members in over a dozen countries. Mike WA6ILQ Yahoo! Groups Links
[Repeater-Builder] Re: Somewhat OT - an interesting antenna design
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: I believe that the cone dipole was the predecessor for today's bow-tie design. Perhaps earlier, but basically the same. Bow-ties are simpler/cheeper to make because they are simply flat sheet metal instead of round cones. All the same idea-- to make the antenna elements (in this case a simple dipole) fatter and therefore more broadband. TV channels being 6 mc wide need such. Laryn K8TVZ
Re: [Repeater-Builder] Redesign to discuss
On Tue, 17 Feb 2009, Dave Gomberg wrote: It's been done. All of it, before. You're probably looking at using DSPs to implement a transponder as a repeater. I am not sure I understand this idea. Do you have a web site on it or I think STELLA does it. Somewhere in here: http://blog.catonic.us/kirby/ -- Kris Kirby, KE4AHR k...@catonic.us But remember, with no superpowers comes no responsibility. --rly
[Repeater-Builder] Re: Somewhat OT - an interesting antenna design
For those interested in bowtie/conical antennas, or dozens of other types for that matter, visit http://www.cebik.com/ Register, then search for the terms, or simply wade through the topics. There's enough data at that site to keep antenna geeks happy for days. Laryn K8TVZ
[Repeater-Builder] Re: MPT Trunked Radio in CB Band
Just a bit of US CB history... Class A CB is now known as GMRS. 462/467 MHz. Wide band FM and many repeaters. The one everyone thinks of was Class D, the 'good buddy' band of the 1970's. I got my start in 2-way radio on both Class A and D. Class B was short lived, not sure what it was. Class C was radio remote control. Ray --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ wa6...@... wrote: What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US.
[Repeater-Builder] Re: Fw: freg
While that is THE source, this site has a much better display of the Analog and DTV data based on your location: http://www.tvfool.com FM stations are also available. This site is perfect for setting up antennas or for DTV/Analog/FM DX. Ray --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: Check here: http://www.fcc.gov/dtv/markets/ Chuck WB2EDV
[Repeater-Builder] Re: Fw: freg
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ wa6...@... wrote: But for the first time in my lifetime 6m will get better - channels 2, 4, and 5 are going off the air (until the FCC sells that spectrum). Or some new stations take over that spectrum. I think it's stupid that we will be one of the last countries to try to do TV on lowband. We'll forever still need 3 band TV antennas. The rest of the world gave up on lowband TV because of ducting. Maybe we can put a 6m repeater on the channel 2 tower? It's 970 feet tall on top of a 5,000 foot mountain, and the chief engineer is ham-friendly... If he's REAL ham friendly, see if he'll let you diplex on the Channel 2 antenna grin That is the perfect setup, TX near as possible to CH 2 to minimize the TVI complaints, RX as distant as possible to get less CH 2 lower sideband noise. Not sure about DTV, but the lower sideband suppression for analog channel 2 is very kind to the TV stations and bad for us. No one other than us would have put up with that much noise from an adjacent user (well, unless the other user was Nextel) Ray
Re: [Repeater-Builder] MPT Trunked Radio in CB Band
Dear John, Yes, we are located in Singapore. We are thinking of putting up a MPT system in CB band. Do you have any products/suppliers that you could recommend to us? Best Regards, Kent Chong --- On Wed, 18/2/09, John Gleichweit smokeyb...@sbcglobal.net wrote: From: John Gleichweit smokeyb...@sbcglobal.net Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band To: Repeater-Builder@yahoogroups.com Date: Wednesday, 18 February, 2009, 5:02 AM By Kent's email domain, I'd gather that he's in Singapore. I'm not sure what the unlicensed/low restriction band may be over there, but it's probably in the 450-470 range. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CA-OES 51-507 http://smokeybehr. blogspot. com http://www.myspace. com/smokeybehr - Original Message From: Mike Morris WA6ILQ wa6...@gmail. com To: Repeater-Builder@ yahoogroups. com Sent: Tuesday, February 17, 2009 10:32:15 AM Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band At 09:53 PM 02/16/09, you wrote: Hi Everybody, Good day. Does anybody know about the a portable/mobile and basestation MPT trunked radio operating in citizen band (CB)? Best Regards, Kent Chong What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US. CB in NZ is somewhere in the 470 region using FM and MPT is a bit more common in AU and NZ. Don't forget - the first two Ws in WWW is World Wide, and this group has over 4300 members in over a dozen countries. Mike WA6ILQ - - -- Yahoo! Groups Links Yahoo! Toolbar is now powered with Search Assist.Download it now! http://sg.toolbar.yahoo.com/
Re: [Repeater-Builder] Redesign to discuss
At 17:52 2/17/2009, Kris Kirby wrote: On Tue, 17 Feb 2009, Dave Gomberg wrote: It's been done. All of it, before. You're probably looking at using DSPs to implement a transponder as a repeater. I am not sure I understand this idea. Do you have a web site on it or I think STELLA does it. From what I can see in the page you referenced, this has just about nothing to do with the idea I have had. Somewhere in here: http://blog.catonic.us/kirby/ -- Kris Kirby, KE4AHR k...@catonic.us But remember, with no superpowers comes no responsibility. --rly Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.237 / Virus Database: 270.10.25/1957 - Release Date: 02/17/09 07:07:00 -- Dave Gomberg, San Francisco NE5EE gomberg1 at wcf dot com All addresses, phones, etc. at http://www.wcf.com/ham/info.html -
Re: [Repeater-Builder] Re: MPT Trunked Radio in CB Band
My understanding of Class B (from this list, I think) is that it was a lot power 465.000 MHz AM channel. Joe M. Ray_Vaughan_99 wrote: Just a bit of US CB history... Class A CB is now known as GMRS. 462/467 MHz. Wide band FM and many repeaters. The one everyone thinks of was Class D, the 'good buddy' band of the 1970's. I got my start in 2-way radio on both Class A and D. Class B was short lived, not sure what it was. Class C was radio remote control. Ray --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ wa6...@... wrote: What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US. Yahoo! Groups Links
Re: [Repeater-Builder] Re: Fw: freg
There will still be TV channels 2-6 on DTV. There is a Channel 2 in Harrisburg, PA. It's not as if Broadcast is going to give up that spectrum. Besides, it's fun to DX TV stations, and is a good beacon system to tell you when the band is up. Joe M. Ray_Vaughan_99 wrote: --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ wa6...@... wrote: But for the first time in my lifetime 6m will get better - channels 2, 4, and 5 are going off the air (until the FCC sells that spectrum). Or some new stations take over that spectrum. I think it's stupid that we will be one of the last countries to try to do TV on lowband. We'll forever still need 3 band TV antennas. The rest of the world gave up on lowband TV because of ducting.
Re: [Repeater-Builder] Re: Fw: freg
The only problem diplexing the 6 meter transmissions with TV channel 2 is that the television transmit antenna would be horizontal polarized. -- Original Message -- Received: Tue, 17 Feb 2009 07:15:57 PM PST From: Ray_Vaughan_99 r...@rayvaughan.com To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Fw: freg If he's REAL ham friendly, see if he'll let you diplex on the Channel 2 antenna grin That is the perfect setup, TX near as possible to CH 2 to minimize the TVI complaints, RX as distant as possible to get less CH 2 lower sideband noise. Not sure about DTV, but the lower sideband suppression for analog channel 2 is very kind to the TV stations and bad for us. No one other than us would have put up with that much noise from an adjacent user (well, unless the other user was Nextel) Ray
RE: [Repeater-Builder] MPT Trunked Radio in CB Band
Kent, Kenwood has the TK-8180 Mobile and the TK-3180 Portable will work in your band your requiring. Just curious, why go to MPT1327 and not TDMA digital. Mike _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kent Chong Sent: Tuesday, February 17, 2009 8:40 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band Dear John, Yes, we are located in Singapore. We are thinking of putting up a MPT system in CB band. Do you have any products/suppliers that you could recommend to us? Best Regards, Kent Chong --- On Wed, 18/2/09, John Gleichweit smokeyb...@sbcglobal.net wrote: From: John Gleichweit smokeyb...@sbcglobal.net Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band To: Repeater-Builder@yahoogroups.com Date: Wednesday, 18 February, 2009, 5:02 AM By Kent's email domain, I'd gather that he's in Singapore. I'm not sure what the unlicensed/low restriction band may be over there, but it's probably in the 450-470 range. -- John Smokey Behr Gleichweit FF1/EMT, CCNA, MCSE IPN-CAL023 N6FOG UP Fresno Sub MP183.5 ECV1852 List Owner x10, Moderator x9 CA-OES 51-507 http://smokeybehr. http://smokeybehr.blogspot.com/ blogspot. com http://www.myspace. http://www.myspace.com/smokeybehr com/smokeybehr - Original Message From: Mike Morris WA6ILQ wa6...@gmail. com mailto:wa6ilq%40gmail.com To: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups. com Sent: Tuesday, February 17, 2009 10:32:15 AM Subject: Re: [Repeater-Builder] MPT Trunked Radio in CB Band At 09:53 PM 02/16/09, you wrote: Hi Everybody, Good day. Does anybody know about the a portable/mobile and basestation MPT trunked radio operating in citizen band (CB)? Best Regards, Kent Chong What country ?? CB in the USA is 27MHz using AM and MPT is very rare in the US. CB in NZ is somewhere in the 470 region using FM and MPT is a bit more common in AU and NZ. Don't forget - the first two Ws in WWW is World Wide, and this group has over 4300 members in over a dozen countries. Mike WA6ILQ - - -- Yahoo! Groups Links _ Search. http://sg.rd.yahoo.com/spirit/fea/travel/*http:/sg.travel.yahoo.com browse and book your hotels and flights through Yahoo! Travel
Re: [Repeater-Builder] Re: Anyone ever interface a CSI TP3200 tone panel to an external controller?
Alright, finally put this in to ExpressSCH to match up roughly the general consensus: http://www.vwreact.org/wp-content/uploads/2009/02/tp3200-to-nhrc.png Something along those lines? Thanks again for the input! -AJ, K6LOR On Tue, Feb 17, 2009 at 7:49 AM, wd8chl wd8...@gmail.com wrote: Mike Pugh wrote: tsoli...@tir.com tsoliver%40tir.com wrote: Program the hang time in the TP-38 to zero and connect it to the RC-850 controller as shown below. I'd like to see this diagram as well, since I had been thinking about this for quite some time... However, at least on my copy of the original message, there is no diagram below Can it be sent again, or be sent directly to me? Thanks in advance. Mike Pugh KA4MKG If you've ever hooked a normal ham controller to a repeater, you don't need a drawing. The PTT output from the tone panel would go to the CTCSS input on the controller. The encode tone out would go wherever the CTCSS injection is on the exciter. Get COS for the controller the way you normally would from the rx. Run raw discriminator audio to the rx input of the tone panel. Transmit audio can either be taken from the tone panel or directly from the rx the way you normally would if you didn't have the tone panel. About as simple as it gets.
Re: [Repeater-Builder] Re: Anyone ever interface a CSI TP3200 tone panel to an external controller?
AJ wrote: Alright, finally put this in to ExpressSCH to match up roughly the general consensus: http://www.vwreact.org/wp-content/uploads/2009/02/tp3200-to-nhrc.png Something along those lines? Thanks again for the input! -AJ, K6LOR Nope, not quite. PTT from the 3200 would go to the CTCSS decode input of the NHRC. COS from the MII would go to the COS on the NHRC. Rx audio from the MII is raw discriminator, best place is high side of the vol pot (NOT the wiper!) CTCSS tone encode out from the 3200 would go to a CG input on the MII.
[Repeater-Builder] Re: MPT1327 Trunked Trunking - Radio in CB Band
Well, One thought is the cost of both the user and fixed equipment. Many Kenwood radios can be ordered with the MPT-1327 firmware installed and ready to go. I've sold a number of them to various people on local systems. The MPT-1327 fixed station hardware (repeaters) should also be relatively lower cost versus TDMA stations. MPT-1327 is just another trunking format with it's advantages and disadvantages like all other formats. While more popular outside the US there are a few MPT-1327 around in both the public and private sector. cheers, skipp skipp025 at yahoo.com www.radiowrench.com Mike Mullarkey k7...@... wrote: Kent, Kenwood has the TK-8180 Mobile and the TK-3180 Portable will work in your band your requiring. Just curious, why go to MPT1327 and not TDMA digital. Mike Yes, we are located in Singapore. We are thinking of putting up a MPT system in CB band. Do you have any products/suppliers that you could recommend to us? Best Regards, Kent Chong
Re: [Repeater-Builder] Re: Somewhat OT - an interesting antenna design
Thanks Guys for the info, no need to reply. Kevin. Get Skype and call me for free. - Original Message - From: Laryn Lohman To: Repeater-Builder@yahoogroups.com Sent: Wednesday, February 18, 2009 3:18 PM Subject: [Repeater-Builder] Re: Somewhat OT - an interesting antenna design For those interested in bowtie/conical antennas, or dozens of other types for that matter, visit http://www.cebik.com/ Register, then search for the terms, or simply wade through the topics. There's enough data at that site to keep antenna geeks happy for days. Laryn K8TVZ sparc_nz Description: Binary data
