soundtrane Posted December 1, 2012 Report Share Posted December 1, 2012 http://www.kaltmancreationsllc.com/rf-test-equipment-html/invisiblewaves-html/cpa-antenna-html/ -vin Quote Link to comment Share on other sites More sharing options...
Todd Weaver Posted December 1, 2012 Report Share Posted December 1, 2012 These look interesting. The address listed for the manufacturer is very near me. I'll contact them and see if they will bring some out to the studio for testing. Quote Link to comment Share on other sites More sharing options...
nika paniashvili Posted December 1, 2012 Report Share Posted December 1, 2012 I might be wrong, but I recall a discussion about this antennas and someone saying its just the next hype. Would be nice if someone actually got their hands on this for a test. Quote Link to comment Share on other sites More sharing options...
soundtrane Posted December 1, 2012 Author Report Share Posted December 1, 2012 i dont recall a discussion about these, the discussion was about another company - product was a cross between dipole and sharkfin. Quote Link to comment Share on other sites More sharing options...
Whit Norris Posted December 1, 2012 Report Share Posted December 1, 2012 Vin, Same as Todd they are in my area I will also get in touch with them and see if I can demo a set. Also it would be great if we could get Larry and the gang at Lectrosonics involved to see what they had to say about any testing. I do know some of the other products that they make as far as frequency analyzers which are built well and are very good. Vin hope all is well and your are staying busy my friend! Cheers, Whit Quote Link to comment Share on other sites More sharing options...
Boomboom Posted December 1, 2012 Report Share Posted December 1, 2012 i dont recall a discussion about these, the discussion was about another company - product was a cross between dipole and sharkfin. "Venue RF" or something like that... They keep' em at Trew if memory's good. Quote Link to comment Share on other sites More sharing options...
jacefivesound Posted December 1, 2012 Report Share Posted December 1, 2012 http://www.rfvenue.com/ I tested the RF venue a year or so ago. Their range was about 80% of my lectro shark fins under typical conditions. Quote Link to comment Share on other sites More sharing options...
studiomprd Posted December 1, 2012 Report Share Posted December 1, 2012 I mentioned them in another thread, this is a CP antenna, and the company is a major player in commercial RF. Quote Link to comment Share on other sites More sharing options...
Matt Posted December 1, 2012 Report Share Posted December 1, 2012 Senator, Can you provide a link to that thread? Matt Quote Link to comment Share on other sites More sharing options...
studiomprd Posted December 1, 2012 Report Share Posted December 1, 2012 HINT: it was a discussion about: how wireless signals hit the antenna... Quote Link to comment Share on other sites More sharing options...
Matt Posted December 1, 2012 Report Share Posted December 1, 2012 Haha! Quote Link to comment Share on other sites More sharing options...
filmfreak Posted December 1, 2012 Report Share Posted December 1, 2012 Hey Vin Don't know how relevant it is but you might want to have a look here too : http://professionalwireless.com/salesall-products Quote Link to comment Share on other sites More sharing options...
soundtrane Posted December 1, 2012 Author Report Share Posted December 1, 2012 Todd, Whit - many thanks for offering to check out these antennas, i'm really interested in the outcome. Whit, i am good, almost at the end of a feature. Tired and wanna go home now... Quote Link to comment Share on other sites More sharing options...
ChrisH Posted December 1, 2012 Report Share Posted December 1, 2012 Is this like an enclosed and squashed helical antenna? I know that large scale RF management often use Helical Antennas because they are so focused. Although the pattern on their website looks like a Cardioid shape. I would be very interested to see a test of these antennas plugged into a venue system next to some ALP 650s plugged into another venue. Set the 650s to 6dB gain and have them all receive the same channel. Id be happy to help set this up if someone in the Atlanta area has the rest of the gear. I could build matching cables and help set it up. Chris Quote Link to comment Share on other sites More sharing options...
Boomboom Posted December 2, 2012 Report Share Posted December 2, 2012 There was an article in the 695 Quarterly magazine some time ago about rx antennas; tests and comparisons. You might wanna have a look at their archives... I think it was somthing like two years ago or so. Quote Link to comment Share on other sites More sharing options...
Audio Daddyo Posted December 2, 2012 Report Share Posted December 2, 2012 Here is an excellent video about Antennas. http://vimeo.com/8826952 It is very well done and explained in a non-technical manner and is very easy to understand. Although the video is about FPV (First Person View) video antennas on RC planes it translates to all antenna physics. Worth watching. Andy Quote Link to comment Share on other sites More sharing options...
André Boisvert Posted December 2, 2012 Report Share Posted December 2, 2012 Here is an excellent video about Antennas. It is very well done and explained in a non-technical manner and is very easy to understand. Although the video is about FPV (First Person View) video antennas on RC planes it translates to all antenna physics. Worth watching. Andy 30 minutes very well spent. Thanks Andy. Quote Link to comment Share on other sites More sharing options...
Audio Daddyo Posted December 2, 2012 Report Share Posted December 2, 2012 Hey André, Glad you liked it. Andy Quote Link to comment Share on other sites More sharing options...
Simon Paine Posted December 2, 2012 Report Share Posted December 2, 2012 New drop-out free technology Thats a pretty bold statement from there website. lol. Quote Link to comment Share on other sites More sharing options...
Whit Norris Posted December 7, 2012 Report Share Posted December 7, 2012 Hey everyone, I emailed the president of the company about trying to demo a set of their antennas. Here is what he had to say. They do not have an evaluation program anymore. Whit, Thank you for your inquiry. We are the exclusive USA distributor for the German manufactured RF & EMC products of Aaronia AG, and we are also the manufacturer of LoWavzTM low frequency antennas and Invisible WavesTM RF analysis products. Based out of Atlanta, Georgia we offer full technical and warranty support and we maintain a fairly extensive product inventory. Our customer list reads like a “Who’s, Who” in the military, industrial, communications, and commercial segments (please see below) and we stand ready to assist you with your RF & EMC related needs. You mentioned demo’ing a pair of CPA antennas. We do not have an evaluation demo program anymore but for the CPA Antennas, we actually offer a money back guarantee (please see below). The Invisible WavesTM IWxCPA antenna is not like your traditional paddle or rod antenna commonly used with wireless microphone receivers and with pro-audio antenna distribution systems. The new IWxCPA incorporates directional, Circular Polarization (CP) technology for both receive and transmit pro-audio wireless applications. Kaltman Creations guarantees* that this antenna will reduce interference, reduce drop outs, help eliminate ‘swishing’ noise artifacts, improve RF signal to noise, and enhance reception of signals propagated through and around objects. *See product info and guarantee at:http://www.kaltmancreationsllc.com/rf-test-equipment-html/invisiblewaves-html/cpa-antenna-html/ The IWxCPA antennas are passive with a 60 degree beam-width and the pattern is circular polarized in the 470MHz to 960MHz range. For use with In-Ear-Monitor transmitters, IWxCPA has a maximum input power rating of 3 Watts. The 10in x 10in x 1.3in, 2.5lbs antennas include swivel mic stand mounting capability (option truss mount available) and are painted theater black with a 50 Ohm low-loss BNC connection. The new IWxCPA antennas are sold in a 2-antenna package for only $499 or a single antenna for $290. Terms All prices in USD. Quote good for 30-Days. Credit Card (Visa, MasterCard, AMEX). Availability: Currently in-stock - Atlanta, Georgia. Shipping: FedEx Ground USA Estimated cost $30, (Bill & Add to the credit card or on your shipper’s account). Please feel free to call or email should you have any questions or wish to place an order. Thanks, Mark Mark L. Kaltman President Kaltman Creations LLC 651 Amberton Crossing Suwanee, Georgia 30024 USA Tel: 678-714-2000 Fax: 678-714-2092 Email: mark@kaltmancreationsllc.com Quote Link to comment Share on other sites More sharing options...
Whit Norris Posted December 7, 2012 Report Share Posted December 7, 2012 I wrote Mark back at Kaltman Creations and sent him a link to this thread. He just gave me a call and offered to let me demo a pair of the CP Antennas. I will try to do the testing with Mike Clark and maybe Todd Weaver if his schedule is free and anyone else in the Atlanta sound group that wants to join. I hope to test these after the 1st of the year and just after the Holiday season. I'll report back then. Mark told me that these antennas are becoming very popular in live sound and are performing much better than the paddle/shark fin style. Looking forward to trying them out. Cheers, Whit Quote Link to comment Share on other sites More sharing options...
Jeff Wexler Posted December 7, 2012 Report Share Posted December 7, 2012 Thanks, Whit, for doing the leg work on this --- I really look forward to what you discover. Quote Link to comment Share on other sites More sharing options...
old school Posted December 7, 2012 Report Share Posted December 7, 2012 Thanks Whit. CrewC Quote Link to comment Share on other sites More sharing options...
Fauzan Posted January 31, 2013 Report Share Posted January 31, 2013 Thanks to this thread I found out about the CP antenna. Eagerly awaiting for Whit's update. A true test of an antenna is definitely when we're doing tracking shots. I had one shot before where I was in a van behind the car that the camera was in. I was getting drop outs when I place the antenna outside the van I am in. Strangely I get better reception holding the antenna inside the van just behind the windshield. Could it be that it was the wind blowing to the fin making it unstable (flapping left and right, not much though - perhaps 5 degree? This was a CIT sharkfin antenna) thus affecting the signal? Quote Link to comment Share on other sites More sharing options...
nwstudios Posted January 31, 2013 Report Share Posted January 31, 2013 Could it be that it was the wind blowing to the fin making it unstable (flapping left and right, not much though - perhaps 5 degree? This was a CIT sharkfin antenna) thus affecting the signal? Low gain antennas like the sharkfins are not that directional. Your radiation pattern is probably very similar to this. Quote Link to comment Share on other sites More sharing options...
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