I am a co-author of the dsp software in the SDR-1000 (with AB2KT). When I began working with the SDR-1000 as a customer, it had less than stellar performance. Along with many others, repeated study w
Where I grew up in Alabama with a Methodist preacher father, we were too poor to have red clay dirt roads so that would have been the lap of luxury. ;-). Blocking dynamic range is an often touted fig
The 2 KHz numbers in the ARRL review are ..... AWFUL. The 2 KHz BDR is 64 dB on 80 meters. The 2 KHz IP3 is -19 dBm. That is not PLUS 19 but MINUS 19 dBm. The 2 KHz IMD dynamic range is 63 dB. WOW. T
Tom Rauch wrote: I agree with Mike on this. IP3 for a number of reasons is useless for determining anything useful. Ignore it. I'd look only at the IMD dynamic range. The Omni 7 doesn't look too bad.
Amen to all of that. I get on contests from multi's, I operated N2NT to a top ten, and I like contesting, but I do not care about any other band on HF but 160. When I started my first serious multi m
As many of you know, W2GD is a serious contester, especially on 160m where he has led a great team of operators for years building up a 160m superstation on the NJ shore. John has been climbing tower
I also viewed EY8MM as an outlier. I would have suggested various skew propagation possibilities but Joel was flipping between different directions to eliminate this possibility according to his desc
There is a much better book for "our purposes" in my opinion. I own or have access to in my work library, almost every book you can see on the amazon pages associated with the book you mention. http:
As a Software Radio Developer and chair of the ARRL Software Defined Radio and Digital Communications technical committee, as a DXCC recipient, contester, and as a ham radio operator period, I abhor
Joel and I have the contruction article from QEX online. http://www.w5zn.org/160%20Meters.html <http://www.w5zn.org/160%20Meters.html>for our version of the W8JI 8 circle. There are modifications we
Agreed. All Flex users on 160m should fix this but most especially high power stations. Bob N4HY _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
It is definitely not dead at all, but it is ill. In about 10 years, amateur radio will go through a demographic collapse and the collapse will be swift and sudden if action is not taken now. The amat
The issue is getting sufficient ground radials so that changing soil conditions: dry season, wet season, etc have minimal impact on the impedance which is the easiest measurement of the changing cond
Thanks everyone for the insightful conversation. I have learned a tremendous amount by doing this antenna work with Joel, using AC6LA's Excel spreadsheet tool to drive EZNEC, learning from the publis
Thank you for this note Tom. Very informative. I am working on an SDR/DSP "smart antenna" design now for deployment at Joel's and I thank him for allowing me to do ALL of this development when I had
And despite all of the "lubricant" from Kendall Jackson and Crown, we did get stuff done... Everyone should know that Joel did almost all the manual labor here with some help from Al Ward and me but
The "W8JI small verticals" that everyone has copied for this are naturally resonant on the 75/80 meter band as an aside. There is plenty of gain on 160 and well more than enough on 80 as RDF and not
During the eclipse next year we will undertake a ham radio based study of the Ionosphere using RBN. http://hamsci.org/article/hamsci-eclipse-team-meets-dayton 73s N4HY -- Bob McGwier Founder, Federat
I agree WSPR is the perfect tool and it is my task to bring WSPR together for the eclipse effort. Bob N4HY -- Bob McGwier Founder, Federated Wireless, Inc Founder and Technical Advisor, HawkEye 360,