Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Mike, It was not really an official ruling, but rather a letter from Riley Hollingsworth, the special counsel for amateur enforcement, expressing an official opinion that ESSB was an inefficient use of bandwidth and therefore "not in accordance with good engineering practice". This phrase is used by the FCC to refer to issues that are not specifically covered by the rules but which are not considered to be allowable under the regulations. The following link will take you to a news story about the opinion in the weekly ARRL electronic newsletter: http://www.arrl.org/arrlletter/03/0418/ The letter was prompted by complaints from other amateurs concerned with the waste of spectrum caused by the wide-band emissions. The news article does quote the letter as stating that ESSB appears to be in violation of Section 97.307(a) of the FCC Rules & Regulations. 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
I don't believe it's a "ruling", per se. When Riley Hollingsworth was the enforcement guru, he made several statements saying that to use excessive bandwidth was not in the spirit of the Amateur Radio rules. A few years ago there were several petitions to "Regulate by Bandwidth" that died for various reasons. You can find multiple references to it if you search the ARRL site for "enhanced ssb". Jim KQ6EA --- On Tue, 5/5/09, W5CUL wrote: > From: W5CUL > Subject: Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ? > To: FlexRadio@flex-radio.biz > Date: Tuesday, May 5, 2009, 6:48 PM > Can someone provide me a hyper-link to an fcc.gov webpage > that specifically > provides this new ruling, or even send me a PDF copy of > this new ruling? I > have looked all over the place, and the last official > R&O for part 97 that I > found was dated October 4, 2006. > > 73, > > Mike > W5CUL > > > -Original Message- > From: flexradio-boun...@flex-radio.biz > [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ray > J > Sent: Monday, May 04, 2009 10:49 PM > To: FlexRadio@flex-radio.biz > Subject: Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony > 3.65K ? > > as stated before.. > > The Federal Communications Commission, the > government agency that regulates the Amateur Radio Service > in the United > States, has recently ruled that ESSB is "not in > accordance with good > amateur and engineering practice" > > > 3650Hz is more than is needed for decent 2 way ssb > contacts. > > > Jesse N4BFD wrote: > > What is the reason for the high cut being at 3650hz? > > > > N4BFD > > > > > > > > On Mon, May 4, 2009 at 6:48 PM, Eric Wachsmann > > wrote: > > > >> Actually, there is a limit of 3650Hz on the high > cut for each sideband > >> (i.e. > >> 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. > >> > >> > >> Eric Wachsmann > >> FlexRadio Systems > >> "*Tune in Excitement!" T* > >> > > ___ > > FlexRadio Systems Mailing List > > FlexRadio@flex-radio.biz > > > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > Archives: > http://www.mail-archive.com/flexradio%40flex-radio.biz/ > > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > > > > > > > > > > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 8.5.323 / Virus Database: 270.12.18/2096 - > Release Date: 05/04/09 > 17:51:00 > > > > ___ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: > http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > > > ___ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: > http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Can someone provide me a hyper-link to an fcc.gov webpage that specifically provides this new ruling, or even send me a PDF copy of this new ruling? I have looked all over the place, and the last official R&O for part 97 that I found was dated October 4, 2006. 73, Mike W5CUL -Original Message- From: flexradio-boun...@flex-radio.biz [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Ray J Sent: Monday, May 04, 2009 10:49 PM To: FlexRadio@flex-radio.biz Subject: Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ? as stated before.. The Federal Communications Commission, the government agency that regulates the Amateur Radio Service in the United States, has recently ruled that ESSB is "not in accordance with good amateur and engineering practice" 3650Hz is more than is needed for decent 2 way ssb contacts. Jesse N4BFD wrote: > What is the reason for the high cut being at 3650hz? > > N4BFD > > On Mon, May 4, 2009 at 6:48 PM, Eric Wachsmann wrote: > >> Actually, there is a limit of 3650Hz on the high cut for each sideband >> (i.e. >> 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. >> >> >> Eric Wachsmann >> FlexRadio Systems >> "*Tune in Excitement!" T* >> > ___ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ > > > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.323 / Virus Database: 270.12.18/2096 - Release Date: 05/04/09 17:51:00 > ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
as stated before.. The Federal Communications Commission, the government agency that regulates the Amateur Radio Service in the United States, has recently ruled that ESSB is "not in accordance with good amateur and engineering practice" 3650Hz is more than is needed for decent 2 way ssb contacts. Jesse N4BFD wrote: What is the reason for the high cut being at 3650hz? N4BFD On Mon, May 4, 2009 at 6:48 PM, Eric Wachsmann wrote: Actually, there is a limit of 3650Hz on the high cut for each sideband (i.e. 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. Eric Wachsmann FlexRadio Systems "*Tune in Excitement!" ™* ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.323 / Virus Database: 270.12.18/2096 - Release Date: 05/04/09 17:51:00 ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
What is the reason for the high cut being at 3650hz? N4BFD On Mon, May 4, 2009 at 6:48 PM, Eric Wachsmann wrote: > Actually, there is a limit of 3650Hz on the high cut for each sideband > (i.e. > 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. > > > Eric Wachsmann > FlexRadio Systems > "*Tune in Excitement!" ™* > ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Eric, Thank you for setting me straight. 73, Ray, K9DUR From: Eric Wachsmann [mailto:e...@flex-radio.com] Sent: Monday, May 04, 2009 6:49 PM To: Ray Andrews Cc: Stig LA4WAA; flexradio@flex-radio.biz Subject: Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ? Actually, there is a limit of 3650Hz on the high cut for each sideband (i.e. 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. Eric Wachsmann FlexRadio Systems "Tune in Excitement!" On Mon, May 4, 2009 at 5:45 PM, Ray Andrews wrote: Stig, You may have misinterpreted the FLEX-3000 specifications. The spec says, "Flat Response 10 Hz to 3.650 KHz (SSB)". This means that the audio response is flat within that range and no guarantees are made outside of that range. It does not mean that the TX audio is limited to 3.65 kHz. The actual transmit filter width that can be set is entirely controlled by the software. Therefore, it is the same for the FLEX-3000 as it is for the SDR-1000 and the FLEX-5000. If you increase the transmit filter width to greater than about 3.1 kHz, the software will give you a warning about compliance with all applicable rules & regulations. However, you can ignore the warning and increase the filter width to whatever you desire. The Federal Communications Commission, the government agency that regulates the Amateur Radio Service in the United States, has recently ruled that ESSB is "not in accordance with good amateur and engineering practice" on the crowded HF bands. Therefore, US amateurs are not supposed to use ESSB on HF. If I am wrong on this, someone from Flex can shoot me down, but the way I understand it, you should have no problems using the FLEX-3000 for ESSB. Just don't do it in the United States. 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Actually, there is a limit of 3650Hz on the high cut for each sideband (i.e. 7.3kHz on AM/FMN/DSB) when using the FLEX-3000. Eric Wachsmann FlexRadio Systems "*Tune in Excitement!" ™* On Mon, May 4, 2009 at 5:45 PM, Ray Andrews wrote: > Stig, > > You may have misinterpreted the FLEX-3000 specifications. The spec says, > "Flat Response 10 Hz to 3.650 KHz (SSB)". This means that the audio > response is flat within that range and no guarantees are made outside of > that range. It does not mean that the TX audio is limited to 3.65 kHz. > > The actual transmit filter width that can be set is entirely controlled by > the software. Therefore, it is the same for the FLEX-3000 as it is for the > SDR-1000 and the FLEX-5000. > > If you increase the transmit filter width to greater than about 3.1 kHz, > the > software will give you a warning about compliance with all applicable rules > & regulations. However, you can ignore the warning and increase the filter > width to whatever you desire. The Federal Communications Commission, the > government agency that regulates the Amateur Radio Service in the United > States, has recently ruled that ESSB is "not in accordance with good > amateur > and engineering practice" on the crowded HF bands. Therefore, US amateurs > are not supposed to use ESSB on HF. > > If I am wrong on this, someone from Flex can shoot me down, but the way I > understand it, you should have no problems using the FLEX-3000 for ESSB. > Just don't do it in the United States. > > 73, Ray, K9DUR > > > > > > ___ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
Re: [Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Stig, You may have misinterpreted the FLEX-3000 specifications. The spec says, "Flat Response 10 Hz to 3.650 KHz (SSB)". This means that the audio response is flat within that range and no guarantees are made outside of that range. It does not mean that the TX audio is limited to 3.65 kHz. The actual transmit filter width that can be set is entirely controlled by the software. Therefore, it is the same for the FLEX-3000 as it is for the SDR-1000 and the FLEX-5000. If you increase the transmit filter width to greater than about 3.1 kHz, the software will give you a warning about compliance with all applicable rules & regulations. However, you can ignore the warning and increase the filter width to whatever you desire. The Federal Communications Commission, the government agency that regulates the Amateur Radio Service in the United States, has recently ruled that ESSB is "not in accordance with good amateur and engineering practice" on the crowded HF bands. Therefore, US amateurs are not supposed to use ESSB on HF. If I am wrong on this, someone from Flex can shoot me down, but the way I understand it, you should have no problems using the FLEX-3000 for ESSB. Just don't do it in the United States. 73, Ray, K9DUR ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
[Flexradio] FW: Flex3000 SSB TX bandwitdh ony 3.65K ?
Thanks, Strange why someone from FlexRadio haven't commented this. Don't the read messages on this list anymore? LA4WÅ, Stig -Opprinnelig melding- Fra: Michael Kallstrom [mailto:michael.kallst...@wku.edu] Sendt: 4. mai 2009 00:04 Til: flexradio@flex-radio.biz Emne: Re: [Flexradio] Flex3000 SSB TX bandwitdh ony 3.65K ? Yes, I was seriously considering the 3000 until I learned of this as well. Guess I'll stick with the 1000. Mike NU4Q On Sun, 3 May 2009 21:21:11 +0200 "Stig LA4WAA" wrote: > Hello, > > > > I just came back from the shock. > > I have a SDR-1000 and love it . I have also been thinking of buying a > Flex-3000 to use at our cottage location. I just read in a other yahoo > forum, and verified it at the Flexradio site, that they have limited the SSB > tx bandwidth to only 3.650Khz! What? > ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/
