Demetre, I think you did not read carefully what Dave wrote and you quoted.
He said, "Currently deployed PMBOs have no way to reliably determine whether or not the frequency is *LOCALLY* clear." This means that if a PMBO is next door to me ( i.e. locally) and I am in a QSO that the client cannot hear, the PMBO will transmit anyway on top of me because the PMBO cannot detect signals in any mode except Pactor, even it busy channel detection is not turned off. Even though I may be strong at the PMBO location, but weak, or even not detectable at all at the client location, the PMBO will transmit anyway in response to a client station that cannot hear me. This is the problem with unattended stations. When stations on both ends are attended, each can hear a station local to itself, so the chances of inadvertant QRM to a local station are probably cut in half. 73, Skip KH6TY ----- Original Message ----- From: "Demetre SV1UY" <[EMAIL PROTECTED]> To: <digitalradio@yahoogroups.com> Sent: Wednesday, December 26, 2007 4:56 PM Subject: [digitalradio] Re: Questions on digital opposition --- In digitalradio@yahoogroups.com, "Dave Bernstein" <[EMAIL PROTECTED]> wrote: > >>>Currently deployed PMBOs have no way to reliably determine whether > or not the frequency is locally clear. They may be configured to detect > Pactor signals, but they cannot detect signals in any other mode. > > 73, > > Dave, AA6YQ > You said that, but the clients always listen OM. After all we do not live in a perfect world and if there is a little QRM, you can always blame the client if this is what you are after. You can report the client to your FCC and they can pull his/her ear, if it makes you happy!!! 73 de SV1UY -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.9/1197 - Release Date: 12/25/2007 8:04 PM
