Glen Trew Posted September 8, 2018 Report Share Posted September 8, 2018 On 7/17/2018 at 6:42 AM, roubi said: The best Leatherman for me : strong, only what I need, and nothing to loose (like those with several screwdriver heads you can add to the body). And yes the pliers function is awesome : https://www.leatherman.com/crunch-1.html I ordered one! Great to have foldable vice grips in my pocket. Quote Link to comment Share on other sites More sharing options...
Elusive Sounds Posted September 24, 2018 Report Share Posted September 24, 2018 Does anyone have experience with using Gordon's whip build method on SMA modded Sennheiser G3s? Quote Link to comment Share on other sites More sharing options...
Glen Trew Posted September 25, 2018 Report Share Posted September 25, 2018 I use the "cable dipoles" in a bag, running the cables (A and B antennas) up the shoulder straps. It worked as advertised. I was using Lectro receivers, but they should work just as well with the G3. Quote Link to comment Share on other sites More sharing options...
IronFilm Posted October 23, 2018 Report Share Posted October 23, 2018 On 6/29/2018 at 10:01 AM, drpro said: I have had good success with brake or deraileur cable from local bike shop. Cover it with heat shrink in your favorite color. If you want to go crazy Plasti-Dip makes a wide range of colors and enhancements for covering your antenna wire. Ohhhh.... that is a good tip, especially as I'm needing some tomorrow for my bicycle anyway! On 9/26/2018 at 6:19 AM, Glen Trew said: I use the "cable dipoles" in a bag, running the cables (A and B antennas) up the shoulder straps. It worked as advertised. I was using Lectro receivers, but they should work just as well with the G3. You made this yourself? Do you have a pic to share? Quote Link to comment Share on other sites More sharing options...
mark kirchner Posted October 27, 2018 Report Share Posted October 27, 2018 On 10/23/2018 at 8:10 AM, IronFilm said: Ohhhh.... that is a good tip, especially as I'm needing some tomorrow for my bicycle anyway! You made this yourself? Do you have a pic to share? What I think Glen was meaning to say is a dipole antennas made from 50 Ohm Coax cable. The Lectrosonics YouTube site has a DIY video on the subject. Quote Link to comment Share on other sites More sharing options...
alidav Posted October 30, 2018 Report Share Posted October 30, 2018 On 6/22/2018 at 4:02 PM, jason porter said: This looks like the stuff. https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F120476274177 looks like a guitar string. the A STRING Quote Link to comment Share on other sites More sharing options...
alidav Posted October 30, 2018 Report Share Posted October 30, 2018 On 6/29/2018 at 12:01 AM, drpro said: I have had good success with brake or deraileur cable from local bike shop. Cover it with heat shrink in your favorite color. If you want to go crazy Plasti-Dip makes a wide range of colors and enhancements for covering your antenna wire. what cross section did you find and use it? Quote Link to comment Share on other sites More sharing options...
alidav Posted October 30, 2018 Report Share Posted October 30, 2018 https://www.primalux.it/new/index.php/catalogo/archi-e-fili/fili/filo-in-bobina-nichel-titanio-super-elastico-primalux-detail Quote Link to comment Share on other sites More sharing options...
alidav Posted April 5, 2019 Report Share Posted April 5, 2019 what sma connectors have you used, there are many quality and prices around, sold online from China like 3 $ for 10 pieces and there also pieces of 5 $ for each. Quote Link to comment Share on other sites More sharing options...
alidav Posted April 13, 2019 Report Share Posted April 13, 2019 On 6/22/2018 at 3:02 PM, Shastapete said: Looks good. What wire are you using? Also, always good to share is the diy dipole from Gordon at Lectrosonics for what I have read, that shield folded in that way is not acting like an effective dipole negative, it is useless. to be effective it has to be far from the cable shield ground and at 90 ° from the positive core. 1 On 6/22/2018 at 3:02 PM, Shastapete said: Quote Link to comment Share on other sites More sharing options...
LarryF Posted April 13, 2019 Report Share Posted April 13, 2019 (edited) On 4/13/2019 at 5:34 AM, alidav said: for what I have read, that shield folded in that way is not acting like an effective dipole negative, it is useless. to be effective it has to be far from the cable shield ground and at 90 ° from the positive core. Actually, the shield needs to be folded as we show it. The folded shield couples to the the cable shield of the coax to "choke" off the RF and force the unbalanced coax to radiate as a dipole. The ideal construction is to have a 1/4 wave cylinder around the coax cable with the shield tied to the top of the cylinder. Here's a long explanation that saves me a lot of typing: http://www.hamuniverse.com/vertbazooka.html This is a good antenna not a great antenna, but it is small, compact and bends easily for storage or placing on a strap. It is a marked improvement over a rusty coat hanger. Best Regards, Larry Fisher Edited April 15, 2019 by LarryF should have had "choke off" rather than "choke of" Quote Link to comment Share on other sites More sharing options...
alidav Posted May 25, 2019 Report Share Posted May 25, 2019 If using that dipole DIY antenna on a UCR 411 receiver, I need to replace both the stock antennas to get better results? On 4/13/2019 at 4:04 PM, LarryF said: Actually, the shield needs to be folded as we show it. The folded shield couples to the the cable shield of the coax to "choke" off the RF and force the unbalanced coax to radiate as a dipole. The ideal construction is to have a 1/4 wave cylinder around the coax cable with the shield tied to the top of the cylinder. Here's a long explanation that saves me a lot of typing: http://www.hamuniverse.com/vertbazooka.html This is a good antenna not a great antenna, but it is small, compact and bends easily for storage or placing on a strap. It is a marked improvement over a rusty coat hanger. Best Regards, Larry Fisher If using that dipole DIY antenna on a UCR 411 receiver, I need to replace both the stock antennas to get better results? Quote Link to comment Share on other sites More sharing options...
LarryF Posted May 25, 2019 Report Share Posted May 25, 2019 Using identical antennas will give you the best results but just improving only one antenna will still help. Remember also that setting the transmitter gain according to our manuals will make what seems to be an "antenna" improvement as the correct audio gain helps reduce the affect of the RF noise floor, interferences and noise ups. You can find out how to set the audio gain in any of our transmitter manuals. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
Boomboom Posted May 25, 2019 Report Share Posted May 25, 2019 According to the ''how to'' for the dipole, is the gauge of the coax affecting the performance in the end ? Quote Link to comment Share on other sites More sharing options...
alidav Posted May 25, 2019 Report Share Posted May 25, 2019 14 minutes ago, Boomboom said: According to the ''how to'' for the dipole, is the gauge of the coax affecting the performance in the end ? I used a 50 OHM antenna tv cable, in a case i used the same cable soldiered directly on the Sennheiser g2 motherboard, to replace the broken stock antenna. Quote Link to comment Share on other sites More sharing options...
former mixer Posted May 31, 2019 Report Share Posted May 31, 2019 Larry, all of my wireless video gear is now using circular polarization. The benefits are significant. Just curious if if CP antennas would also work as well for audio equipment? Quote Link to comment Share on other sites More sharing options...
LarryF Posted May 31, 2019 Report Share Posted May 31, 2019 5 hours ago, nick kolias said: Larry, all of my wireless video gear is now using circular polarization. The benefits are significant. Just curious if if CP antennas would also work as well for audio equipment? Hi Nick, One big problem is that for circularly polarized reception, ideally you should have circularly polarized transmission. That is nearly impossible to do with a body pack transmitter. Even if you could, when the talent turns around, the left hand polarization becomes right hand polarization with theoretically zero reception, or vice versa. In multiple trials over the years at Lectro, we were never able to get improvements in performance using circularly polarized antennas at the receiver. YMMV. Best Regards, Larry Fisher Quote Link to comment Share on other sites More sharing options...
former mixer Posted May 31, 2019 Report Share Posted May 31, 2019 Copy that- thank you. Quote Link to comment Share on other sites More sharing options...
Sound Posted May 31, 2020 Report Share Posted May 31, 2020 These antennas look great! I lost an antenna on a Sony uwp-d Transmitter. Did anyone try to mod these units as well, like the G3? Quote Link to comment Share on other sites More sharing options...
IronFilm Posted June 10, 2020 Report Share Posted June 10, 2020 Yes, if you do a google search I'm sure you'll get some hits of people doing it with a UWP-D as well, I've heard the process is quite similar to with a G3. Quote Link to comment Share on other sites More sharing options...
Jemshaw Posted April 10, 2021 Report Share Posted April 10, 2021 Just made some of these attenna's for spares. Thanks roubi for info . Only mentioned in the full utube comments is measure the antenna length from the end of the shielding on sma connector. ( I know it seems obvious). Quote Link to comment Share on other sites More sharing options...
roubi Posted April 15, 2021 Author Report Share Posted April 15, 2021 On 4/10/2021 at 8:58 AM, Jemshaw said: Just made some of these attenna's for spares. Thanks roubi for info . Only mentioned in the full utube comments is measure the antenna length from the end of the shielding on sma connector. ( I know it seems obvious). Send pics ! Quote Link to comment Share on other sites More sharing options...
booksix Posted July 18, 2022 Report Share Posted July 18, 2022 I want to make some antennas for my Sennheiser G4 receivers but the frequency bands seem to cover 3 or more blocks on the Lectrosonics chart. How do I go about sizing my antenna in a case like this? Quote Link to comment Share on other sites More sharing options...
Dalton Patterson Posted July 19, 2022 Report Share Posted July 19, 2022 Make it for the longest one. Long antennas for lower freq waves and shorter antennas for higher freq waves. See how the low freq is long. The antennas have to cover one full wave. Quote Link to comment Share on other sites More sharing options...
Paul F Posted July 19, 2022 Report Share Posted July 19, 2022 As a major DIY enthusiast, who likes to build everything, this is one I don't bother with. $5 each on Aliexpress. Just cut them to length. Quote Link to comment Share on other sites More sharing options...
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