It is pretty easy to make a 100 ohm to 50 ohm balanced to unbalanced transformer system that will work from 14 to 30 MHz. Then feed all 3 bands from this one transformer system using a single feedlin
The 2014 Dayton Hamvention Antenna forum slide decks are now posted. Go to http://www.k3lr.com Click on the left side box "DAYTON ANTENNA SUMMARY" You will see 2014 back through 2004. Thanks to K5TR,
Hi Ken: K5TR will fix this later this evening. Stay tuned 73, Tim K3LR Yes. Broken link. Ken K6MR From: N2TK, Tony Sent: Thursday, 28 August, 2014 11:36 To: cq-contest@contesting.com, towertalk@conte
The broken link to the 2014 Antenna Forum presentation by K7TJR about low band RX arrays is now fixed. Thanks to K5TR. Sorry about the problem. Go to http://www.k3lr.com Click on the left side button
http://www.wirelessestimator.com/breaking_news.cfm RIP Tim K3LR _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contes
Hello Mike: I have dealt with your exact question myself. Private airfields are not subject to FAA protection as far as tower structures are concerned. Only public use air facilities are. There is no
Hello Matthew: What is the center to center distance of the legs? It could be Rohn 25 - not model 45 from the photos. It looks like the dirt trapped lots of moisture around the base. That might be a
Hello Allen: I have eight HyTowers here. Four have been up for 23 years. I suggest you make the base slightly larger - by 6 inches - every dimension. The base is so small that rebar is not needed. Si
Hello John: I work at DX Engineering, so maybe I can help clarify a bit. You know I love antennas and I really loved the TX-38. It was a super performer (10 meters was really good), I used it on Fiel
HI Wayne: Here is the best pot (sealed) for TIC motors. http://www.dxengineering.com/parts/dxe-ticgen-pot All 18 of the K3LR TIC Ring Rotors use this one. 73, Tim K3LR --Original Message-- From: Towe
Yes, it is a 500 ohm 10 turn pot. It has to be to work with the gears and the controllers. 73, Tim K3LR In my opinion the Clarostat were the most problematic. Is the DX Engineering replacement a 500
And http://dxengineering.com stocks many HBX towers for immediate shipping. 73 Tim K3LR - at DX Engineering Scratch that, they support Universal. Mike --Original Message-- From: mike repinski via Tow
The 2015 March/April issue of QEX has a fascinating article about Wire Antennas for 80 meter DXing written by Al, K3LC. Very timely information on this topic. BTW - my subject line has "Yagi" in it (
The popular internet TV show Ham Nation with Bob, K9EID will be live at the Crowne Plaza Dayton on Wednesday evening May 13 (starts at 9 PM EDT) in the Contest Super Suite. Go to http://live.twit.tv
Hello David: As per my email below - the entire antenna forum will be live streamed and recorded for playback via Icom's YouTube channel. 73, Tim K3LR _____ From: David Gallatin [mailto:kc9eev@yahoo.
Hello Jim: I have wrapped the tower base with flexible plastic fence (about 5 feet tall) - held in place using ty wraps. Inexpensive, no harm to RF and works great. 73, Tim K3LR How are folks providi
Hello Don: Where are you placing the RG-5000 in the chain? If the RG-5000 is behind the Wellbrook active device, that might be an issue - that the mixing products are a result of the active amplifier
It is also important to insure the dummy load is exactly 50 ohms. The various hybrid couplers are designed to have exactly 50 ohms on the dump port. I check my dump power loads twice a year to make s
Limits? This is a pretty easy problem that costs less than $500 to do (wireless) and will run at least 10 Mbps uplink and downlink with no trouble 24X7X365. 100 feet of wired (buried) Ethernet can be
You can see a paper on antenna pattern measurements using a drone that was given by Greg, W8WWV during the 2015 Dayton Antenna forum. Start at 1:41:00 https://www.youtube.com/watch?v=U_waED8MzfE 73,