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N3MEL > SWL 28.02.22 11:02l 20 Lines 1434 Bytes #999 (0) @ USBBS
BID : 18163_N3MEL
Read: GUEST
Subj: WRMI Radio Miami International
Path: IZ3LSV<IQ2LB<IQ5KG<IK1NHL<CX2SA<OK2PEN<NA7KR<N1URO<K3CHB<N3MEL
Sent: 220228/0116Z 18163@N3MEL.#EPA.PA.USA.NOAM LinBPQ6.0.20
A team of great folks from the Federal Communications Commission (FCC) office in Miami and the Federal Aviation Administration (FAA) in Atlanta, Georgia and Fort Lauderdale, Florida visited us today. They have been working with our engineers to solve some mysterious interference that airline pilots have been reporting as they fly over the east coast of Florida just east of our transmitter site in Okeechobee. It turns out that our frequency of 7780 kHz on a 44-degree beam up the East Coast of North America and on to Europe was radiating a low-power 17th harmonic (17 times the nominal frequency of 7780 kHz) on a frequency used by aircraft flying in the area. After a lot of hard work by everyone, we have come up with a plan to switch our frequency of 7780 towards Europe to 7730 kHz as of the beginning of the next shortwave broadcast season (the A22 season) on March 27th. And we will switch our transmission to Mexico and Southwestern North America from 7730 to 7780 kHz. After doing a series of tests today, we think that will solve the harmonic interference problem. Thanks to everyone for their assistance. It's much-appreciated.
73 de Glenn N3MEL
1st Responders Network
N3MEL-7 Packet node (Full Service BBS)
VHF:145.090
HF:14.105 LSB (Daytime Only)
N3MEL-9 Crossover Port
VARA FM to AX.25 145.670
N3MEL-10 WL2K (Wide) VARA FM Gateway
145.670
N3MEL-4 VARA Digipeater
145.670
N3MEL-11 Packet RMS Gateway
VHF:145.090
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