Juan, Am I wrong to assume that skimmers are not calibrated? They should be calibrated to S-9=50 uV into 50 ohms at least to provide some kind of uniformity band-to-band and skimmer-to-kimmer. I don'
Thank you for the reference Paul. Regarding the quote by N4ZR stating: "I had earlier understood that SNR was calculated in a relatively short interval just before the spot was sent to the Telnet ser
I don't believe it waits 45 seconds before reporting, Skimmer is posting spots within a few seconds of starting. I think the reference was to an assessment of band noise up to and including the previ
I know what I am going to say isn't talking about 160m, but pertains to a vertical on the beach. Quantifying, with anything but anecdotal data, the difference between a horizontal antenna located inl
As I recall, ZF1EJ's station uses a log periodic, a tribander and possibly other antennas and he is on the southern side of the island. Log periodic antennas typically do not have much gain if they w
Years ago when I was working the 80 meter DX from the mobile, beyond working VK6LK long path, I was checking out salt water locations. I found that the closer I got to the East facing salt water, the
One excellent example of use vertical array for HF on the beach was VP6DX Ducie Island 2008 http://ducie2008.dl1mgb.com/equipment/index.php Fantastic performance and results. N4IS JC ________________
It is tricky to use receiving tests to gauge the effectiveness of proposed transmitting antennas for two reasons. You are probably listening on receiving type antennas rather than transmitting anten
Yep, JC is correct. VDA's for 20 through 10. Oriented NE in the morning half of the day and NW in the 2nd half of the day. 4-squares on 30, both modes on 40, and 75 Meter SSB. Single vertical on 80 C
That was a very interesting post Mark and thanks for taking the time. In the mid 60's to 80's I was very interested in LF and MF BCB DXing and at first I had a loaner HRO-500 (I worked at National 19
Hi Guys, ENOUGH of the "...modeling the proverbial 'vertical on the beach'" already...! My "delete" button is beginning to wear out. Just "...Build it, and they will come." Period. ~73~ de Eddy VE3CU
I swear I am going to start a self serving thread called vertical near by to a beach. Herb Schoenbohm, KV4FZ Sent from Windows Mail Hi Guys, ENOUGH of the "...modeling the proverbial 'vertical on the
Yeah!! -This one's been "done to death'! "If you believe - no proof is necessary. If you don't believe - no proof is possible"! J 73, Charlie, K4OTV --Original Message-- From: Topband [mailto:topband
You clearly have not been subject to "Finding True North" and its endless reincarnations on TopBand reflector, or you would not be complaining about such a minor thread as this. :>) 73, Guy. ________
Hi Guy, Thankfully & mercifully, I seem to have been spared that particular episode of fun & frolics...! ~73~ de Eddy VE3CUI - VE3XZ _________________ Topband Reflector Archives - http://www.contesti
Author: Mark Connelly via Topband <topband@contesting.com>
Date: Tue, 19 Aug 2014 09:41:16 -0400 (EDT)
I'll just stick in a few responses to others' comments about what I wrote on the 'beach' thread and then I'll get out of the way. << It is tricky to use receiving tests to gauge the effectiveness of
Definitely, as I'd mentioned, less site-to-site variability would be shown with a full-size efficient transmitting type antenna, whether a vertical over a good ground system or a high (>150 ft. eleva
Or giving advantage to one or the other incoming angle in effect setting the primary signal arrival Not using a small omni RX antenna for this experiment introduces some serious calculation issues. E
It's not necessary to place a vertical antenna at waters edge to gain the low angle efficiency advantages of an oceanfront site. There are two zones of interest: the area immediately adjacent to the
One big question is, where does the path loss on top band come from? Is the path loss due to energy lost with each hop? If so, bending some of the radiation around the earth a little bit, and reducin