Base Antenna Spares

An optional groundplane kit to fit on the Solarcon A99.

The kit consists of 4 fibreglass groundplanes, approx 6ft long, and a mounting collar.
The collar fits at the base of the A99 and the groundplanes are angled downwards at approx 34'

Original Solarcon GPK, made in USA (not to be confused with cheap UK copies).

An optional groundplane kit to fit on the Solarcon Imax 2000.

The kit consists of 4 fibreglass groundplanes, approx 4ft long, and a mounting bracket.

Original Solarcon GPK, made in USA (not to be confused with cheap UK copies).

This kit does not fit the Solarcon A99

A replacement top section for the Solarcon A99 base antenna.

Limited stock available of the original Firestik A99 upgrade. Made in USA.

Not only is this shorter than the original A99 top section, but also claims a higher gain because it is wound (like a Firestik) rather than just a straight wire.

Length 155cm.

Everyone who has used one has reported some gain over the standard A99.

A replacement top section for the Solarcon A99 base antenna.

Originally these were made by Firestik and proved very popular, but they have not been available for several years now - so Thunderpole have now made their own version of it in the UK!

Not only is this shorter than the original A99 top section, but also claims a higher gain because it is wound (like a Firestik) rather than just a straight wire.

Length: 157cm.

Everyone who has used one has reported some gain over the standard A99.

Replacement fibreglass sections for the Sirio Gainmaster.

Available at £14.50 per section or £34.50 for all three sections.

The bottom section listed is not the section with the coil, it is the first section that drops into this.

We do not stock the bottom section with the coil.

Replacement bracket for connecting a Sirio Gainmaster to a pole.

Includes u-bolt & nut/bolt.

This is for ONE bracket & ONE U-Bolt - if you need a full set you need to order 2 sets.

Parts kit for the Sirio Gainmaster.

Includes all the parts in the photo:  3 x jubilee clips, wire end connector, antenna tip & tool.

Replacement internal cable assembly for the Sirio Gainmaster.

This one is for the original 5/8 wave Gainmaster and NOT suitable for the HW 1/2 wave.

Single replacement groundplane radial for Sirio 827 antenna.

A full set of 8 replacement groundplane radials for Sirio 827 antenna.

This plastic ring clamps over the radials of the 827 to stop them vibrating in the wind.

Anyone with an 827 will know the way the radials "sing" in the wind, this simple device eliminates that problem.

A genuine bracket from Sirio designed to allow you to mount the Sirio 827 onto any size pole from 1.25" to 2" diameter.

Normally these antenna sit "on top" of the mounting pole, which must be 35-40mm to fit correctly, this adaptor consists of a short length of the correct size poles connected to a a pair of U-bolts that will fit poles up to 2" diameter.

Can also be used for mounting any other antennas on a 2" pole when there brackets usually only accept smaller poles.

Replacement set of the telescopic sections for the Sirio 827. 

Consists of all sections except the base section (with coil), the first section and the tuning tip.

Replacement 2nd section for the Sirio 827 - this is the first "loose" section which fits into the base section.

Sirio replacement top section with anti-static "ball".  This fits various Sirio antenna such as the 1/2 wave and 5/8 wave (ie antennas which come with this top as standard).

Note: this does NOT fit the 827

Sirio replacement tuning tip with anti-static "ball". 

This fits the Sirio 2016, 2012 & 2008 antennas.

This is the tuning tip ONLY, it does not include the section that it slots into (with grub screw).

Note: this does NOT fit the 827

A replacement set of plastic sleeves to suit various Sirio base antennas.

Replacement centre for centre-fed dipole.

Ideal for homebrew construction.

A groundplane kit to allow you to use a mobile antenna in your loft etc.

Consists of a small aluminium plate (approx 6" square) with a hole in the middle to accept a standard antenna mount. Attached to this are 4 aluminium groundplanes approx 1.5m long, which lie flat on the ground.

Not ideal, but with a reasonable mobile antenna this will work better than any of the "loft" antennas.