EFHWs are noisier than for example dipoles. EFHWs noise primarily stems from their unbalanced nature and the potential for the feedline to act as an extension of the antenna. Local noise sources—such as switching power supplies, LED lights, inverters, transformers or electrical appliances—couple more easily into the system via the feedline or the lack of a true counterpoise. A dipole, by contrast, benefits from its balanced design, which can reject some of the noise when paired with good build practices (e.g., a balun and symmetrical placement).
RF Chokes can also dramatically help not to mention keep the RF feedback down when over QRP powers. 73, Jay Davidson Husband/Father Project Manager Engineer/Tinkerer HAM-KJ5HMX 832-488-8590 [email protected]<mailto:[email protected]> Texas-EL29FT From: BVARC <[email protected]> On Behalf Of Spencer KC7JCV via BVARC Sent: Friday, March 7, 2025 9:53 AM To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]> Cc: Spencer KC7JCV <[email protected]> Subject: Re: [BVARC] Choices, choices Right now Im running an 80-10 efhw that I built for around $35. It works well, but my noise floor is crazy on below 20m. Antennas aren’t too bad to build especially end feds and dipoles. If you need any help just message me. 73 all, Spencer D Hunter KC7JCV Brazos Valley Amateur Radio Club Cross Roads Ham Radio Club On Mar 7, 2025, at 9:41 AM, mark janzer via BVARC <[email protected]<mailto:[email protected]>> wrote: As a heads up, on April 5th, about 12pm, BVARC will have an HF hands on orientation at the Bayland Community Center (after the license testing session). We'll have at least one HF station available (SSB and/or CW) and allow for a hands on experience to any who would like to attend. We're especially focusing on the newly licensed, as an overview and an operating opportunity. Food will be provided (right Scotty and Daphne?). 73 Mark K5MGJ On Friday, March 7, 2025 at 09:32:08 AM CST, rudolph_ackerman via BVARC <[email protected]<mailto:[email protected]>> wrote: 17 or 25ft whip, 40-10 EFHW or a DX commander. All are portable options. If you attend the Houston POTA event odds are you will see examples of each of these. Sent from my T-Mobile 5G Device -------- Original message -------- From: majid latif via BVARC <[email protected]<mailto:[email protected]>> Date: 3/7/25 7:44 AM (GMT-06:00) To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]<mailto:[email protected]>> Cc: majid latif <[email protected]<mailto:[email protected]>>, rudolph_ackerman <[email protected]<mailto:[email protected]>>, Scott Medbury <[email protected]<mailto:[email protected]>> Subject: Re: [BVARC] Choices, choices Hi everyone, I am still in the research mode for my first HF radio, and this shared perspectives are helpful. Any thoughts or suggestions on an antenna for a home, i.e. leave outside and can take down and move if needed? Majid On Fri, Mar 7, 2025, 7:36 AM rudolph_ackerman via BVARC <[email protected]<mailto:[email protected]>> wrote: The Houston POTA group will be holding there next event at Sheldon Lake state park on the 15th. We normal have one of each of these radios set up . You are welcome to come out and talk with the owner and make some contacts with each one. Sent from my T-Mobile 5G Device -------- Original message -------- From: Scott Medbury via BVARC <[email protected]<mailto:[email protected]>> Date: 3/6/25 12:09 PM (GMT-06:00) To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]<mailto:[email protected]>> Cc: Scott Medbury <[email protected]<mailto:[email protected]>> Subject: [BVARC] Choices, choices If you had a choice of 3 hf radios, what would your pick be and why? 1. Icom IC7300 2. Yaesu DX10 3. Yaesu 991 73 de Scott KD5FBA ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list [email protected]<mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/[email protected]/
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