CRN Vanimo was in quite well this morning, and I was surprised to find threshold audio on the recording as early as 0730 UTC (approx. 1 hour before Vanimo SS). Their signal rose slowly and steadily, peaking at my local SR (1215 UTC). Radio Federacion Shuar was a background pest from about 1000-1115, but CRN dominated. CRN was still in at a poor-fair level at 1400.
Wayne Wilson of TE-PNG mentioned that on June 5th he adjusted the audio processor to sharpen up the modulation of the audio. I definitely think this has made an improvement. Propagation differences aside, the audio noted on my June 5-6-7 recordings is crisper than my June 4 recording, particularly noticeable when the signal is fading in at poor-fair level. I found the web site for the Australian firm that manufactures CRN's Polar POD330 Delta antenna, but there are no pictures or specifics about this model. However, there's an interesting "Interference Intermodulation Calculator" available for free download: http://www.polarelec.com.au/downloads.htm It runs under Windows from its own folder, and doesn't install anything or modify the Registry. After a few minutes of study I figured out how to use the software to calculate & verify the daytime-only intermod/mixing products that occur in my Beverage antenna's impedance matching transformers from the 50kw MW stations in my area. (I've verified that the mixing is not happening in the receivers--multiple Kiwa BCB highpass filters make no difference in the intermod heard; however, a faraday-shielded primary winding in the Beverage matcher has greatly reduced the problem on one antenna and totally eliminated it on my other Beverage.) This nifty program calculates 2nd through 7th order mixing products, as well as 3-frequency combinations. If you're having trouble with *receiver* generated mixing products, I think you can enter your rig's IF frequency(s) to calculate results (enter the IF frequency as the "R" or "Rx" freq). Guy Atkins Puyallup, WA USA ---[Start Commercial]--------------------- World Radio TV Handbook 2004 is out! Only $20.97 through us. http://www.amazon.com/exec/obidos/ASIN/0823059685/hardcoredxcom ---[End Commercial]----------------------- ________________________________________ Hard-Core-DX mailing list [EMAIL PROTECTED] http://dallas.hard-core-dx.com/mailman/listinfo/hard-core-dx http://www.hard-core-dx.com/ _______________________________________________ THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed and/or modified under the conditions set down in the Design Science License published by Michael Stutz at http://dsl.org/copyleft/dsl.txt
