Home Base CB Antennas

Base station aerials for CB and the 10 metre band from Sirio, Prosistel, Tagra and Falkos, with the coax to feed them. Every one is omnidirectional, so the choice comes down to height, mast fit and power handling. The Sirio Signal Keeper is 2.37 m and fits a balcony or a loft; the Prosistel PST-1011J J-pole stands about 8.5 m and needs no ground plane.

  • Element type: 1/4 wave ground plane, 1/2 wave, 5/8 wave or 3/4 wave J-pole
  • Power handling: 100 Watts on the Signal Keeper, 5 kW pep on the PST-1011J
  • Mast fit: 35 to 42 mm on the Sirio GPE27, 40 to 50 mm on the Prosistel
  • Coax: RG58, Mini8 and RG213 from 10 to 30 metres, PL259 plugs fitted on the patch leads

Before ordering, our guide covers height above the roofline, mast, radials and the cable run for a base aerial at home.

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Which home base CB antenna suits your site, and will it reach 10 metres?

Published gain spans a narrow band: the quarter wave Sirio M 400 Stardust at 0 dBd, 2.15 dBi, the 5/8 wave Sirio ground planes at 1.2 to 1.5 dBd, the Sirio Vector 4000 and the Tagra BT101 Astroplane at 2 dBd, 4.15 dBi. The Prosistel PST-1011J quotes 5 dB over a quarter wave ground plane, a different reference. Two decibels seldom decide it. Band coverage and clear space usually do.

Band first. The Sirio 827 and the GPE27 are quoted 26 to 28 MHz, the Vector 4000 27 to 28.5 MHz. For the upper end of the 10 metre band, the tunable aerials reach further: the Sirio Monsoon tunes 26 to 30 MHz on its bottom coil, the M 400 Stardust 26.5 to 30 MHz by whip length, the PST-1011J 27 to 30 MHz.

Then space, and not only vertical space. A ground plane needs room for its radials as well as its radiator: 2690 mm on the M 400 Stardust, 2000 mm on the Sirio Tornado 27 and the Monsoon, 1400 mm on the 827, 1320 mm on the GPE27. On a narrow roof that horizontal reach counts as much as mast height.

AerialTypeHeightBand quotedGain
Tagra BT101 Astroplane5/8 wave3.50 m27 MHz2 dBd, 4.15 dBi
Sirio M 400 Stardust1/4 wave ground plane5040 mm26.5 to 30 MHz0 dBd, 2.15 dBi
Sirio GPE275/8 wave ground plane6500 mm26 to 28 MHz1.2 dBd, 3.35 dBi
Sirio 8275/8 ground plane6700 mm26 to 28 MHz1.5 dBd, 3.65 dBi
Sirio Monsoonbase, bottom coil tuned7180 mm26 to 30 MHz1.2 dBd, 3.35 dBi
Sirio Tornado 275/8 wave ground plane7230 mm26 to 28 MHz1.2 dBd, 3.35 dBi

The feeder counts too. Quoted loss per 10 m at 100 MHz is 1.5 dB on military spec RG58, 1.2 dB on MINI8, 0.7 dB on RG213, so a long run up a mast repays the heavier cable.

The check most often missed: read the quoted frequency range first. An aerial listed 26 to 28 MHz, like the factory tuned GPE27, is not the same buy as the Monsoon at 26 to 30 MHz. Then check SWR with a meter once the aerial is at its final height.