What tpe beads do I need, 43 or 73? length? 4 ft, 100 beads seems awfully long..... _______________________________________________ _______________________________________________ TowerTalk mailing l
____________ I use 31 mix for this kind of choke application. what is your operating frequency? http://audiosystemsgroup.com/NCDXACoaxChokesPPT.pdf see pages 22-25 73 is better in general, 43 is ok f
____________ I use 31 mix for this kind of choke application. because it is the only material with a single turn impedance that is predominantly resistive at HF. Unfortunately, the largest #73 beads
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Tue, 1 Dec 2015 19:43:20 -0500
I have 6 turns of LMR-400 through a stack of 5 2.4" cores. I'm pretty sure I could get another turn using a bit of wire pulling soap / lube. Using RG-400 Teflon dielectric and silver plated braid sho
I use 31 mix for this kind of choke application. what is your operating frequency? http://audiosystemsgroup.com/NCDXACoaxChokesPPT.pdf see pages 22-25 73 is better in general, 43 is ok for low freque
Have you considered using a 2.4" toroid core(s) and running multiple turns of the coax through it. I can get about 10-12 turns of 1/4" diameter coax (RG58 type) through those cores. I think you can g
if there's no connector on the coax<grin> ants...IE: f12, etc, etc. That being said, the entire compact mess goes inside a water proof nema box, with a gasketed lid, and SS hinges. Then a 7-16 din co
If you needed to choke an already-connectorized RG-8-size cable, you could use a pair of Biggest Clamp-on, mix-31 ferrites. The two clamp-ons would be not far off in price from a stack of five or six
or six 2.4? OD cores" Good prices for Fair-Rite mix 31 parts: https://proaudioeng.com/fair-rite-ferrite-products/ _______________________________________________ ____________________________________
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Fri, 4 Dec 2015 01:18:28 -0500
But they are only big enough for one pass of RG-8 size cable. you can get up to 7 passes through the 2.4" OD cores although the last pass or two may require judicious use of wire pulling lube. The tw
Thanks for the link, Howard. Their prices are about $1 better than KF7P on the Mix 31 2.4 OD cores, and $2 worse than KF7P on the Mix 31 Biggest Clamp-ons ($16.95 at pro audio vs. 14.95 at KF7P). On
Thanks for the plug Kelly.... I have free shipping until later tonight on everything on my website. That $1 difference would get eaten up pretty fast in shipping. Order now! :-) Chris KF7p (www.kf7p.
While it's great that guys like Howard are distributing #31 cores in small quantity, a far better approach is to organize a group purchase. I've done several, and been a part of several organized by
Jim is correct on much of his post below. I have done several purchases of Fair-Rite 2631803802. These are the #31 2.4" OD cores. I found best pricing from Arrow Electronics. I purchased 100 a year a
Excellent advice, Gary. My rule is also to buy full boxes only, and for delivery to end users only in person at club meetings. I won't re-ship, for exactly the reasons you cite. Also great advice to
I agree with Jim Brown, the toroids are fragile! We ship all of our toroids in the correct foam packaging supplied by Fair-Rite. The Snap-Its when shut are much more durable, still all ferrite produc