>From k4cjx: They have been aware of electronic signal detection for some time now. Then, they participate in contests....
Steve, k4cjx --- In digitalradio@yahoogroups.com, "Danny Douglas" <[EMAIL PROTECTED]> wrote: > > Sadly, the ARRL is usually behind in their suggestions to rules. They seem > to want something in concrete, and already in use, before they will fully > support it. I too think the auto detection should be required, but since > its not in general use, I dont know how many of the ARRL officers are even > aware of its availability. I know I wouldnt be, if I were not a member of > this group and had never read about it anywhere else. > > ----- Original Message ----- > From: "KV9U" <[EMAIL PROTECTED]> > To: <digitalradio@yahoogroups.com> > Sent: Friday, January 20, 2006 10:22 AM > Subject: Re: [digitalradio] Re: Olivia frequencies > > > > With the current state of the art, as exemplified by the beta testing of > > SCAMP, it is completely proven that monitoring of the channel can be > > done by machine, in order to prevent transmission on a busy channel. It > > doesn't even scan anything as it is able to detect any modulation in the > > pass band. Even a continuous carrier, even if very weak will block > > transmission unless the human operator intervenes. Same with other > > modulation types, including voice. > > > > In some cases the detected "signal" can be an internal birdie, some odd > > spurs, etc. that are not a legitimate signal. The software can be > > adjusted for different settings to trigger only if the signals are below > > a certain point. > > > > There has to be the ability of the operator to make some adjustments or > > you might never be able to transmit. That was my experience during the > > beta testing. You have to take into consideration those signals that may > > trigger the detector if you have a wider passband and a nearby signal is > > affecting the software even though it is outside your signal width. > > Better filters will help of course but not everyone has them. > > > > I am disappointed that the ARRL did not recommend automatic detection to > > the requirements for both automatic and semi-automatic stations. > > > > 73, > > > > Rick, KV9U > > > > > > > > > > > > kd4e wrote: > > > > > So, I am correct that the requirement to not QRM has > > > not been waived, that all stations that QRM are in > > > violation of FCC regs, and that busy freq. detection > > > is an obvious solution with tons of history to prove > > > itself reliable. > > > > > > I do understand that apps would have to scan for a > > > variety of modes but that should not be difficult > > > given their proprietary hardware and software and > > > the commercial motivation to remain legal. > > > > > > Sounds like all that needs to happen is a one line > > > instruction from the FCC: > > > > > > "All Ham ops are reminded that all new QSO's using > > > any mode must not QRM existing QSO's regardless of > > > the mode of that QSO and the failure to do so remains > > > a violation risking fines and license and equipment > > > forfeiture." > > > > > > And perhaps a second line notifying that commercial > > > hardware and/or software marketed to the Ham market as > > > "automatic" or "unattended" must demonstrate a non- > > > removable capacity to meet the non-QRM requirement > > > via busy-frequency checking or fail in Type Approval > > > and that existing hardware/software must be retrofitted > > > or removed from the market. > > > > > > Anyone owning older equipment unable to be retrofitted > > > should be reminded by the FCC that they must manually > > > check for existing activity or be subject to QRM > > > action. > > > > > > Does that about cover it? ;-) > > > > > > Thanks & 73, kd4e > > > > > > > > > > > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org > > > > Other areas of interest: > > > > The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ > > DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy > discussion) > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.375 / Virus Database: 267.14.21/235 - Release Date: 1/19/2006 > > > > > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> 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/
