Are antennas altered in the presence of carbon fiber masts?
2021年3月15日 · Any non (or very low) conductive materials with a dielectric constant greater than one should be easily noticed with an S11 test like this... hence not surprised to see an effect. That said, I did expect the dip to move down in frequency as is the case with insulated wire and antennas placed inside a PVC pipe.
Did the US Air Force take out an Amateur Radio balloon for …
2023年2月12日 · However, the transparent balloons--if the paint adheres or the surface is roughed to allow adherence--are a different story. The weight of conductive paint is grams/ max if applied properly. Again, as you boast experience, then do your fellow hams a courtesy to correct what is factually incorrect Jerry. Everyone is watching Jerry.
Fractal Antennas - NOVA - QRZ Forums
2008年10月29日 · As to your envisioned tuner's characteristics, one can garner a clue from what I remember seeing in one of the patent application examples from his corporate site. Something about a novel approach to forming capacitors and inductors from metallic paths on a non conductive substrate of some sort.
Are antennas altered in the presence of carbon fiber masts?
2021年3月13日 · A common situation is using some of the easily available fiberglass 4 foot section poles for quick/temporary antenna support. Go up 20 or 24 or maybe 28 feet, with the pole as the center support of a simple wire dipole like a 102 foot non resonant one. Not much weight or wind resistance so probably get by without even guying the pole.
Ham Radio - The 2-meter twin lead J-pole antenna. - QRZ Forums
2019年10月20日 · I,have owned 2- of these copper J-Pole antennas dual band 144/450,MHZ, they work great, My first one was on a tower ,back in,Ohio I,painted it white,with a, non- lead paint,I,bought my ,J-Pole from ,KB9VBR,he makes these ,and other antennas also which are made from copper, which is great you put it up on a mast pipe and forget it,.I,had A ,1.1 swr …
CQ Magazine Calls on FCC to Resume Amateur Enforcement
2008年11月19日 · 4) Add a new requirement that in order to operate on HF phone a license applicant provide SWL-QSL's from some number of amateur stations, say 100 (this is a small substitute for the real experience that used to be required, but its something). We could go to the FCC and start making proposals like this.
New event, the K1USN SST OPEN (SSO) to be held annually …
2024年8月8日 · Exchange: Name and State/Province (Non US-VE =DX) Score =Total Points x CW Speed Multiplier x Total State/Province/DX Multipliers Stations may be worked once per band. 50 point Bonus for working K1USN once per band. Post log summary on www.3830scores.com Do NOT mail logs to K1USN
prefix shows as non DXCC, must be in error? - QRZ Forums
2022年5月15日 · Dear all, Yesterday I carried out the following Qso: But I have as result NON-DXCC. Would you be so kind to check please?
What to Do BEFORE Moving to an HOA | Page 14 | QRZ Forums
2021年6月28日 · When the wife loves a floorplan within the HOA and hates the floorplan of the non-HOA residence, one better learn to adapt or the next residence will be an apartment where divorced men predominate and all the gear was sold off to meet the demands in the Court decree.
RFinder - The World Wide Repeater Directory and the BM ... - QRZ …
2017年4月16日 · In non-RFinder Android Radio devices it shows the talkgroups from the app and has the normal Hoseline last ...