JLHP – Low Power Horizontal Ring

JLHP

Horizontal Ring FM Broadcast Antenna Series

JLJPThe JAMPRO Horizontal Ring series of antennas are horizontally polarized sidemount FM antenna systems consisting of a horizontal ring radiator and rigid coaxial feed lines. JAMPRO Horizontal Ring antennas are constructed of durable noncorrosive brass and copper. All associated brackets and hardware are made of stainless steel or hot dipped galvanized steel for many years of dependable service. The JLHP is cable fed and will handle a maximum input power of 1 KW. The JMHP is fed with a 1-5/8" interbay line and will handle a maximum input power of 10 KW. The JHHP Horizontal Ring array has a 3-1/8" interbay feed system and has a safe input rating of up to 40 KW. The JAMPRO horizontally polarized FM arrays are completely assembled and factory tuned on similar tower structures to insure proper impedance match and minimum VSWR. As an option, the circularity of the azimuth pattern can also be measured on JAMPRO's 7,000 ft. open field test range to determine the effect of the mounting structure on the antenna pattern. Custom directional patterns and reduced RFR arrays are also available.

  • Excellent Performance for Stereo and SCA Operation
  • Excellent VSWR Bandwidth
  • Rugged Mechanical Construction and Mounting
  • Horizontally Polarized
  • Frequency Range 88-108 MHz
  • Factory Tuned on a Similar Mounting Structure
  • DC Grounded at Every Bay for Maximum Lightning Protection
  • Made With Marine Brass and Copper for Long-Lasting Performance
  • Optional Radomes Available
  • FCC Directionalization Available
JAMPRO Horizontal Ring FM Broadcast Antenna Series
# of Bays Power Gain Gain (dB) Weight (lbs.) Windload (lbs)
1 .92 -0.37 103 157
2 2.0 3.0 217 363
3 3.0 4.76 331 570
4 4.2 6.22 444 776
5 5.4 7.31 558 982
6 6.4 8.05 672 1188
8 8.6 9.34 900 1601
10 11.0 10.4 1127 2013
12 13.2 11.2 1355 2425

Notes:

  1. Weights and windloads shown are based on JMHP. Contact manufacturer for JLHP and JHHP weights and windloads.
  2. Feed points, when end fed, 3 ft. below bottom bay. 8 ft. below center when center fed.
  3. All inputs EIA flange, female.
  4. Maximum input power rating: JLHP-1KW; JMHP-10KW; JHHP-40KW. Power derating occurs over 2,000 ft. elevation. Contact manufacturer for details.
  5. Power and dB gains are typical for vertical components.
  6. Other combinations of EIA inputs and power ratings available.
  7. Free space azimuth circularity is +/- 1 dB.
  8. Custom mounting brackets available.
  9. Power gain is based on half-wave dipole in free space.
  10. Weights and windloads calculated at 50/33 psf, 112 mph wind speed, no ice.
  11. Weights and windloads include antenna, feed system and mounting brackets.
  12. Weights and windloads do not include reflectors.

All specifications subject to change. Contact manufacturer for pricing information.