header image

Model HF-315 Portable HF Magnetic Loop Antenna

Caras Mfg. Model HF-315 Portable HF Magnetic Loop Antenna




coupler-so239 coupler-top

HF-315 Unassembled

This is a great portable antenna solution for use anywhere that a small, lightweight, high performance portable antenna is needed. Perfect for use with the Yaesu FT-817, Elecraft KX3, Icom IC-703, and various HF military manpack radios.

These antennas are made from quality parts and materials – i.e. all metal variable capacitor, high quality low-loss internal wiring. Loop cables are made with high quality Amphenol® PL-259 connectors and good quality coaxial cable. The included stand is made from thick-wall schedule 40 PVC pipe.

Main Features:

  • Ultra portable. Can be easily stored inside a small case, bag, backpack, etc.
  • Very lightweight. 1.5lbs.(0.7kg.) without included PVC stand, 3lbs.(1.36kg) with stand.
  • A great HF antenna solution for Hiking, SOTA, EMCOMM, etc.
  • Built-in standard tripod mount for use with photo tripods if needed.
  • BNC connection to radio.
  • No separate fussy coupling loop needed. Tuning and coupling components are housed within a single enclosure.
  • Very quick and easy to tune as needed. Simply tune for maximum noise on receive and then apply transmit power & fine tune (if needed) for lowest SWR.
  • Transmit/Receive frequency coverage is continuous from 3 mhz to 15 mhz, including the 80/75m, 60m, 40m, 30m, and 20m Amateur Radio bands.
  • Design provides good performance at all covered frequencies.
  • Rated transmit power of 25 watts P.E.P. SSB/CW, 10 watts continuous carrier.
  • Wide usable bandwidth between 2.0:1 swr points, even at lower frequencies. Typically 15khz or more. High signal transfer efficiency is maintained throughout the usable bandwidth.
  • Does not require any type of counterpoise, ground radials, nor ground connection for operation.
  • Does not require an antenna tuner. Tuner is built-in.
  • Inherent low-noise, high signal ratio.
  • Hi-Q design helps to reject off-channel interference.
  • Directional & magnetic signal response properties of the antenna allow for high rejection of local noise sources along with maximum reception of the desired signal.

Each antenna comes complete with Coaxial Loop Element, Coupler Unit, PVC Stand, and 8-page printed user manual.


You can also view and download the user manual online here