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In article .com,
wrote: I have 2 R2000s and a DX398. Radios not known for their wide danamic range. I use a ~70' wire antenna, with a 9:1 tranformer, (with another 1:1 for ground noise isolation) and I have very little problem with overload. A ham who operates at(or beyond) legal power lives about 2 miles form me and when he fires up, I do have to leave the band he is operating on. But I used to own a R390/URR and a R392/URR and both suffered the same problem. I borrowed a R5000, and a PCR1000 and the R5000 was slightly better. The PCR1000 was a POS joke. The DSP was nice, but I guess I'm a "horse drawn man", and a radio must have knobs. My Heath GR64 doesn't have any overload issuses, but given it is a deaf as a post, I am not shocked. I supect that with a decent antenna, a good matching overload maybe on over blown issue. When you've got a quarter of a million watts of medium wave transmitters blinking their tower lights on your horizon, it's a problem. And I'm 5-7 miles away. Especially with a Kenwood R-1000 which uses diode switched bandpass filters in the front end. Since I got a portable to tote around, I found that If I want to use another receiver in the house, I have to turn on the R-1000 to bias the diodes on or off, (or disconnect the antenna), otherwise the spectrum is filled with intermod reradiated from the antenna. [Diety] help any radio buff who lives in Federal Way/Vashon Island or near any other large metro area's medium wave transmitter patch. I heard a story about a MARS operator/ham there who was having problems with an on frequency harmonic on a MARS channel around 4 MHz. The FCC guy he talked to said (words to the effect), Yup, it's right on your frequency, a couple of miles away, 100 milliwatts, and within the legal limits. Sorry. Mark Zenier Washington State resident |
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