5 element 50MHz LFA-Q Yagi Wide Spaced (7.5m)

Manufacturer InnovAntennas

A low noise high gain 5el 50MHz LFA-Q Directional Loop Array
Sales price £629.95
gross price
Sales price without tax £524.96
Sales price without tax£524.96
Tax amount £104.99
Total Tax: £104.99


A 5 element Low Noise, Heavy Duty QUAD

The G0KSC LFA-Q possesses all of the design traits InnovAntennas have become well-known for. Direct 50 Ohm impedance (and hence no matching loss or pattern distortion).  Minimal side lobes, High levels of Front to Back ratio (F/B) and Front to Rear ratio (F/R), and wide, flat bandwidth. However, the LFA-Q stands out for two more major benefits. High levels of forward gain and its' extremely rugged design which make it ideal for installation where harsh weather conditions are commonplace.

If you want the absolute best performance from minimal boom length and require performance that is available in any weather conditions or simply want something a little different, then the LFA-Q could be the one for you!


JR3XMG web

2 x 5el LFA-Q @ JR3XMG - Serious hams need Serious Antennas!

JR3XMG web2

Under the 2 x 5el @ JR3XMG:

"I think this is the first set-up station in Japan so I am very happy and appreciated to use LFA-Q this system"  

This 5el LFA-Q is a wide-spaced 5el made heavy duty to survive extreme weather conditions @ DK8NE:



Gain: 12.49dBi @ 50.150MHz

F/B: 23.59dB @ 50.150MHz

Peak Gain: 12.76dBi

Peak F/B: 20dB

Power Rating: 5kw+

SWR: Below 1.4:1 from 50.05MHz to 50.350MHz


Stacking Distance: 8m 

2 Stacked Gain @ 8m spacing: 15.73dBi

2 Stacked F/B: 21.57dB

2 Stacked Gain @ 8m Spacing 15m above ground: 21.08dBi

Boom Length: 7.5m

Weight: 18.5Kg

Turning Radius: 4.03m 

Wind Loading: 0.57 Square Metres 

Wind Survival: 160KPH 

Other options available if higher wind loading/survival is required.


Customer comment on the LFA-Q:

''Very nice...assembled and installed over the last two days - even though it arrived over night!

Performs extremely well - It replaced a MET 144 8T (remember them) that was about 20 years old - the gamma match had become unstable - suspect the trombone dielectric has aged/decayed.

This antenna has great FB like the MET but I think gain is very comparable and bandwidth far, far superior.

Thanks for the great service

Martin VE7MM/G4EZG''


This antenna is made with tapered elements 16mm centres and 13mm outer sections with 2mm wall thickness. The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts.  The LFA-Q has a twin-boom system. Each section is 45mm square with 2mm wall thickness tapering to 40mm with 2mm wall at the ends. The booms are joined each end to one another by a second piece of the same material used for the boom. A UV protected Boom Guy system is also provided with stainless steel turnbuckles for easy adjustment.

The LFA-Q is also provided with 2 boom to mast brackets, one on each boom and both brackets comprise of 4 U bolts (2 square for the boom, 2 round for the supporting mast) which have been formed from marine grade stainless steel.

Our antennas are constructed with the best quality materials in order that the best mechanical construction can be achieved, not the cheapest and most profitable! Even a digital caliper is used (with an accuracy of .01mm) to measure the elements during production to ensure they are within 0.2mm of what they should be, ensuring they work as well as our software model predicts.

Note: Much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make up of our antennas have least effect on performance and pattern degradation. More information can be found here

  • Marine grade Stainless Steel Fittings
  • Original Stauff Insulation clamps
  • Mill finished boom and elements for highest levels of accuracy


Manufactured the right way, not the cheapest way! 

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