This antenna is an excellent choice for an efficient, Medium Power End Fed Half Wave (EFHW) for your home QTH where you need an SO-239 coax connector.
 
Built using a 2 x T240-43 Fair-Rite 2643803802 cores, 49:1 winding, 3kv 100PF TDK capacitor and all stainless-steel components and our custom PCB. The antenna is built to last. 
 
We can supply the antenna as a transformer only, or with 80m or 40m band antenna wire options with or without a mounting plate. 
 
Select 80m band option to resonate on 80m, 40m, 20m, 15, and 10m with no ATU.
 
You can also use the antenna on 30m, 17m and 12m bands, although you may need to use an ATU.
 
Select 40m band option to resonate on 40m, 20m, 15, and 10m with no ATU. You can also use the antenna on 30m, 17m and 12m bands, although you will need to use an ATU with reduced power.
 
If you select any wired option you will also receive a 6 turn compensation coil 2m from the transformer.
 
Antenna details  
49:1 wound EFHW transformer using a 2 x T240-43 Fair-Rite 2643803802 cores, 49:1
3kV 100pF TDK capacitor
Stainless steel hardware
Heavy-duty insulator
IP65-rated ABS enclosure with ventilation to reduce condensation
Our universal antenna mounting plate
 
The 2xFT240-43 antenna works best for 80m-20m bands with reduced efficiency above 15m band, dropping off at 10m.
 
Band Options
80m Version - Covers 80m, 40m, 20m, 15m, and 10m bands with no ATU required.
40m Version - Covers 40m, 20m, 15m, and 10m bands with no ATU required.

For  30m, 17m, and 12m bands you may need to use an ATU.
 
Both band options feature our 1.5mm stranded plain annealed copper wire, PVC-coated in black, and include a six-turn compensation coil for improved high-band matching.
 
Installation & Tuning
Universal mounting plate included, compatible with 2" poles
Antenna wire is supplied slightly longer than needed—trim or fold back the antenna wire in 5cm increments to achieve resonance
 
Important Notes
Your SWR may vary depending on antenna height, orientation, and surroundings
Always check SWR before use—an SWR exceeding 1.5:1 may damage your transceiver
 
This EFHW antenna is designed for reliability, efficiency, and long-term performance—a perfect addition to your amateur radio setup.
 
Lastly, please remember you should use a Common Mode Choke/Line Isolator with an EFHW.  We have several options available in our store.