Post by Deleted on Apr 27, 2014 13:25:39 GMT
From the Internet Building in the Center of North America my Part 15 radio stations will celebrate year 7 in one-month.
As of now station KDX Worldround Radio alternates between two frequencies and two transmitters...
When a day's main listening is planned for inside the building or close to the building exterior, we use an AMT3000 transmitting at 1550 kHz medium wave, triangular loading coil self-designed.
But for times out in the more distant parts of the campus we switch to the AMT5000 at 1680 kHz.
Both transmitters have similar antenna systems, but the AMT5000, in addition to its efficient Class E circuit, has the benefit of a ground radial system.
KDX streams from kdxradio.com with two 56kbps servers: Icecast and Shoutcast.
Several more transmission systems are presently out of service.
Carrier Current at 970 kHz is off the air pending the repair of two LPB transmitters.
Shortwave is awaiting installation of the circuit cards into a metal enclosure and erection of an End Fed Dipole antenna.
Long Wave transmitter development remains an incomplete project, which we hope to revisit this year.
Other projects in the works include...
Indoor antenna experiments at 1640 kHz with call letters KHZ using an AMT3000, for the benefit of Part 15 operators who keep their transmitters indoors, is stalled right now at the two Wintennas serving as our main antennas, hybrids between indoor and outdoor in that they resonate metal window frames in two outer walls, thus putting signal both indoors and out.
That's not all. We are building two outdoor antenna sites for experimental transmission on our two regular frequencies, with remote control capability that will allow switching from Wintenna to the outdoor Ultennas, so named based on a recommended design from PhilB.
Many threads have been opened at part15.us over the years regarding these many projects, but it will be far easier to combine them all on this single ongoing thread here, as a service of the ALPB, and place links to this on the partner site. If I ever find any of the original threads I'll link back to them for a complete experience.
As a matter of fact, several of these projects are documented through links on the Part 15 page at kdxradio.com.
As of now station KDX Worldround Radio alternates between two frequencies and two transmitters...
When a day's main listening is planned for inside the building or close to the building exterior, we use an AMT3000 transmitting at 1550 kHz medium wave, triangular loading coil self-designed.
But for times out in the more distant parts of the campus we switch to the AMT5000 at 1680 kHz.
Both transmitters have similar antenna systems, but the AMT5000, in addition to its efficient Class E circuit, has the benefit of a ground radial system.
KDX streams from kdxradio.com with two 56kbps servers: Icecast and Shoutcast.
Several more transmission systems are presently out of service.
Carrier Current at 970 kHz is off the air pending the repair of two LPB transmitters.
Shortwave is awaiting installation of the circuit cards into a metal enclosure and erection of an End Fed Dipole antenna.
Long Wave transmitter development remains an incomplete project, which we hope to revisit this year.
Other projects in the works include...
Indoor antenna experiments at 1640 kHz with call letters KHZ using an AMT3000, for the benefit of Part 15 operators who keep their transmitters indoors, is stalled right now at the two Wintennas serving as our main antennas, hybrids between indoor and outdoor in that they resonate metal window frames in two outer walls, thus putting signal both indoors and out.
That's not all. We are building two outdoor antenna sites for experimental transmission on our two regular frequencies, with remote control capability that will allow switching from Wintenna to the outdoor Ultennas, so named based on a recommended design from PhilB.
Many threads have been opened at part15.us over the years regarding these many projects, but it will be far easier to combine them all on this single ongoing thread here, as a service of the ALPB, and place links to this on the partner site. If I ever find any of the original threads I'll link back to them for a complete experience.
As a matter of fact, several of these projects are documented through links on the Part 15 page at kdxradio.com.