I have the MFJ-1026 that was bought to use against power line noise. If the noise is radiated externally to your house and not conducted into your house via the power lines and if the noise is from a particular direction the 1026 will help and sometimes dramatically. If the noise is from no particular direction you'll not see much benefit.
You might get an idea if the noise is directional by rotating a BCB receiver with internal loopstick to see if it peaks in one direction. (See if you can find a null.) If you decide to try the 1026 you'll need an external sense antenna with similar pattern to your main antenna. If you use a transceiver you'll be transmitting through the 1026 using its internal relay. So far it's been okay at 100 watts SSB but you would want to put it between the TR relay and receiver for anything AM or before the amp for SSB higher power. The adjustments are critical and take a while to master. They are also frequency dependant so going from 160 to 80 is a retuning proposition. Of course you could log the knob settings to get back close. On the higher bands at full throttle using the preamp decreases the s/n ratio so if the noise is minor you wouldn't want to use the 1026. Just turn its power off to put in bypass. The manual is online so that might help your decision. I was reluctant to spend money on something that might not help but in my situation it was worthwhile. There is an RFI mailing list that is worth joining even if you mostly just "read the mail". Pat wa4tuk -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Duke, K5XU Sent: Thursday, January 24, 2008 8:27 PM To: Discussion of AM Radio Subject: [AMRadio] Receiver Noise Reduction Devices I'm looking for a way to reduce a received noise which is being back-fed into a nearby powerline from something inside a house about a block away. I've been working with my power company, and we are in agreement that it is coming from the owner's side of the meter. This noise is killing all but the strongest signals on 160 and 80 meters, and is almost as bad on the lower half of 40. The noise sounds like a strong white noise on 80 and 40, and more like an electric motor on 160 and the AM bc band. Will a device such as the MFJ 1025 or 1026 reduce this noise enough to be worth spending the money for it, or should I just prey for lightning in the next block? Mike Duke, K5XU American Council of Blind Radio Amateurs ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.11/1242 - Release Date: 1/24/2008 8:32 PM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.11/1242 - Release Date: 1/24/2008 8:32 PM ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
