Ron, A couple of UK repeaters are dual standard d-star / Analogue.
Digital/auto/analogue switching is achieved via an embedded suffix in the d-star path description. Its a good way to introduce people to d-star. Analogue users need CTCSS enabled to mute the d-star noise See http://www.ukrepeater.net/index.html Ian G8PWE ----- Original Message ----- From: Ron Wright To: Repeater-Builder@yahoogroups.com Sent: Friday, May 09, 2008 1:47 PM Subject: Re: Re: [Repeater-Builder] FCC Denies Petition to Utilize 2m Sub-Band for Digita Joe, I am planning adding D-Star to my analog 2m repeater. I am planning a dual control so if a user has CTCSS then the analog side would work and if no CTCSS then the d-star path would be used. Not a full D-Star approach for we will not be looking for the D-Star formated data, only if you have CTCSS or not. Simple and hopefully can get some interest in D-Star and demo its advantages and disadvantages. The problem is in some areas, like where I am, there are no pairs for D-Star to go on in the 2 m band. We are full and this is the problem in many areas. Also the D-Star ICOM controllers are not like most repeater controllers. They talk to the ICOM repeaters with a Cat-5 cable with serial data giving commands such as ptt, digital audio data, etc. Not the simple get COS/key transmitter. So if doing full D-Star and wanting to get into the gate way, ICOM's IRLP or Echolink, then you need ICOMs controller. Much more complex solved with $. A D-Star repeater can go for $5-10k and this is for what is on the ground. There have been couple analog repeaters converted to D-Star here. This has been the most growth. 73, ron, n9ee/r >From: MCH <[EMAIL PROTECTED]> >Date: 2008/05/08 Thu PM 10:45:33 CDT >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] FCC Denies Petition to Utilize 2m Sub-Band for Digita > >You know a lot of this problem could "go away" of they would only make >dual mode repeaters like P25 systems are. Then, you could replace an >existing repeater and simply ADD the D-STAR mode to the area. That way, >you could have just as many D-STAR repeaters as analog repeaters with >the same coverage. > >Joe M. > >Ron Wright wrote: >> Jim, >> >> I tend to agree more spectrum is not needed on 2 meters just to accommodate D-Star or any other mode, digital or analog. Many analog boys are also starving for space for their repeaters. >> >> D-Star does look for the proper D-Star format to "unsquelch" as one might say. It does not simply turn on with signal like many analog rigs do. The repeaters and rigs do this. >> >> This is why, as you very well know, we use CTCSS...to unsquelch the rcvr when the proper tone rcv'd. >> >> The petition to the FCC was an attempt to gain more repeater pairs mainly for D-Star. I am sure the petitioners would have wanted the expansion to go for digital only. I am sure the FCC saw thru this. >> >> Another issue popped up about a year ago. An FCC rep made a comment at a forum stating or more like asking if D-Star was really a normal Ham repeater since it delays the digital data and is in a Packet type store and forward mode. The delay is ms. With this in mind there were repeater councils giving out freq pairs which were not in the FCC rules for repeater...145.5-145.800. There were some actually using them. This effort has for the most part gone away. >> >> 73, ron, n9ee/r >> >> >> >> >>> From: wd8chl <[EMAIL PROTECTED]> >>> Date: 2008/05/08 Thu PM 02:39:00 CDT >>> To: Repeater-Builder@yahoogroups.com >>> Subject: Re: [Repeater-Builder] FCC Denies Petition to Utilize 2m Sub-Band for Digital Repeater Operation >> >>> >>> Mark Thompson wrote: >>>> ---------------------------------------------------------- >>>> >>>> >>>> May 7 2008 Ken D. Chafin 3624 Foothill Road #1 La Crescenta, CA >>>> 91214 >>>> >>>> Leon J. Brown 1627 Fair Park Avenue Los Angeles, CA 90014 >>>> >>>> Re: Petition for Rule Making filed October 10, 2007 >>> <snip for brevity> >>>> The Petition argues that additional spectrum is needed for repeater >>>> stations because some amateur repeater stations have begun using >>>> certain digital communication protocols, and digital voice operation >>>> is incompatible with existing analog operations [because d]igital >>>> voice users are unable to determine if the desired frequency is in >>>> use by analog users and can inadvertently cause harmful interference >>>> to those users. >>> Good. D-Star and other digital voice modes do NOT need more spectrum on 2M. >>> >>> If a digital voice mode does not have some sort of provision for >>> monitoring for non-digital activity, or preventing transmission if there >>> is any, it needs to be redesigned, as it can easily be considered >>> illegal. P25 has it. >>> >>> Jim >>> WD8CHL >>> >> >> >> Ron Wright, N9EE >> 727-376-6575 >> MICRO COMPUTER CONCEPTS >> Owner 146.64 repeater Tampa Bay, FL >> No tone, all are welcome. >> >> >> >> ------------------------------------ >> >> >> >> Yahoo! Groups Links >> >> >> >> >> > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
