Arrrrg, Herb you have stumbled on to the idea we have joked about here for some time. A pair of 8 element RX arrays for diversity receive served up by subscription on the internet. Located on top the
I just turned my webcam around and snapped a pix of the proposed array location. How can I resist that low take off angle on 160? Dreams, Ahhhhh. "http://www.k7tjr.com/culver_cam.htm" Lee K7TJR That
I just posted some pictures of the US version of the woodpecker OTH radar on my personal web page. The Christmas Valley OR transmitter site is only about 100 Miles from my QTH. It was a site to behol
Hello Pete, that the preamp, which is between the feedline and the primary of the binocular matching transformer, is somehow amplifying the common mode signals? The shield of the coax connects to the
Evaluate against what? Hmm seems kind of a silly statement to me as a designer. Evaluation is the job of component engineering in most companies. They make sure that the components conform to the spe
It's been there all along guys. "http://www.lairdtech.com/Products/EMI-Solutions/Ferrite-Products/Ferrite-Toroids/" Lee K7TJR OR _______________________________________________ UR RST IS ... ... ..9
Oops direct link did not work thru go to that page then click on downloads for Laird product specs. Lee K7TJR OR _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
Thank you guys for your in depth comments on Laird. This now circles back to what I attempted to say in the beginning. I do not believe we get all the information we need as radio guys just from the
I do not know the ferrite suppliers name. I buy these toroids already wound. What I do know is it is a Chinese company. Lee K7TJR So who is this mysterious off brand ferrite supplier or is that a sec
Dave W0FLS is correct in that the Hi-Z system should need no additional amplification or any limiting to protect the receiver. The preamp as supplied should perform to about +30 dBm TOI. Johns proble
Bob, I suggest you contact Peter XU7ACY and get his take on working 160 DX from your area of the world. In my contacts with him, receiving has been his biggest problem. Lee K7TJR OR _________________
Hi Gary, The length of your element will have no affect on the pattern of your array. The length will affect the absolute output level of the array. For your circumstances it is doubtful adding extra
There is a third figure of merit name for small receiving arrays that came out of Syracuse University Research Corporation in 1967. It was called SNIF for Signal to Noise Improvement Factor. A term a
It seems to me and I may be wrong but dont you get the tilted ground answer just by tilting your vertical elements with respect to ground in Eznec? From what I see with doing that the take off angle
Greg (ZL3IX) developed his remote system as shown in the power point in ~2003. We shared some design ideas at the time. He is a very accomplished designer. He has since abandoned the 8 element circul
I just posted some pictures of my take on F barrel quality on the Hi-Z website. You might have to refresh the page as it is just now posted. YMMV Lee K7TJR OR "http://www.hizantennas.com/f_connector_
caused the swr to increase from about 1.2 to 1 to 1.7 to 1 . the 4x4 and the antenna? Well Glenn it is not so much of a riddle as it is an engineering problem. My results for a similar element show
First let Me say this passive 8 circle antenna is a great antenna. I am sure it is outstanding compared to most receiving systems. However, It seems to me a moot point to be discussing the merits of
My original message was scrubbed sorry. It is important to use the combiners with this array as Frank has. The simpler 2 transformer design may have more of a tendency to have the pattern shift with