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http://w6trw.com/wp-content/uploads/2018/05/09-13-2016_PortableHFOperations_BillShanney.pdf
• Rx: 200ma X 4 hours X 0.8 duty cycle = 640 ma-hours • Tx: 2000ma X 4 hours X 0.2 duty cycle = 1600 ma-hours • Total = 2240 ma-hours • Most transceivers need >12 volts to operate properly • A LiFePO battery pack that delivers 3 amp-hours at 12V is available from Bioenno for $50 (add $12 for a charger)
https://www.dxengineering.com/search/part-type/hf-yagi-hexx-beam-and-rotatable-antennas/product-line/hy-gain-hf-beam-antennas
Find Hy-Gain HF Beam Antennas and get Free Shipping on Most Orders Over $99 at DX Engineering! Hy-Gain HF Beam Antennas are stronger, lighter, have less wind surface, and last years longer. Featuring impressive average gain and excellent front-to-back, Hy-Gain HF Beams are built with parts selected for durability and ruggedness that will ensure years of trouble-free …
https://www.dxengineering.com/search/part-type/hf-yagi-hexx-beam-and-rotatable-antennas/product-line/optibeam-hf-directional-antennas
Find OptiBeam HF Directional Antennas and get Free Shipping on Most Orders Over $99 at DX Engineering! Optimum Short-Wave Antennas - Computer Designed - Computer Optimized OptiBeam is the world-renown manufacturer of top-quality HF directional antennas that deliver ultimate performance and lasting value. This accomplishment is the result of over 15 years of …
https://www.hamradiosecrets.com/ham-radio-hf-antenna.html
(A dipole antenna can be operated on its odd multiple harmonics!) The horizontal portion of this ham radio HF antenna should be at least 60% of the overall length, for best performance. Common Mode RF Chokes For The Ham Radio HF Antenna. Common mode RF chokes are described in detail in another page of this site on the "classic" ham radio dipole.
https://www.qsl.net/v73ns/backyardwireantennaes.pdf
lower HF bands, and we may use bare or insulated wire. Often, we mislabel multi-band doublets as dipoles because the antenna is about 1/2-wavelength at the lowest frequency of operation. But to be strictly correct, that antenna is a dipole only at the lowest frequency of use. Fig. 1 shows the two essential dimensions of a real dipole.
http://www.bvarc.org/pdf/HF_Antennas_by_KD5FX.pdf
HF Antennas Especially stealth models for those in an HOA By Dave Land KD5FX . Dipole . Dipole Easy and cheap to build, can be made with small gauge wire For stealth applications (suggest 18ga black wire from Frys) Single band antenna when fed by coax
https://www.ti.com/lit/an/scba034/scba034.pdf
HF Antenna Design Notes . Page (i) Edition 3 – September 2003 . This is the third edition of the . HF Antenna Design Notes . It describes the designing and tuning of HF Antennas for use with the following products: All Tag-it™ inlays, the S6000, S6500 Readers and any third party reader.
https://hamcity.com/ham-equipment/antennas/base/verticals/hf.html
SKU: AV-12AVQ Hy-Gain. Base Antenna Dropshipped from Hy-Gain HF (20,15,10 Meters) Tri-Band Base Vertical Antenna. Max Power: 1500 Watts...
http://www.cvarc.org/resources/Tech_Articles/antenna_myths.pdf
Radials • The commercial broadcast standard for radials on an HF vertical is 120 1/4 wave wires “buried” two to three inches to achieve the best low angle performance. Those experiments were performed by G.H. Brown, “Ground Systems as a Factor in Antenna Efficiency” Proceedings IRE (now IEEE), June 1937, p 753.
http://www.iw5edi.com/ham-radio/?hf-ham-radio-antennas-for-apartments%2C53
HF Ham Radio Antennas For Apartments . by AG4DG . The Issues . A full-size antenna for HF (except for the 10m band) is not feasible for apartments due to the space required. An apartment antenna should have the following characteristics: Compact Size: This is the most obvious requirement of apartment antennas.
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