My DIY multi-band fan dipole antenna for 40/20/10m and 15m!

This is my new multi-band fan dipole antenna with elements for 40, 20 and 10m, which will also work on 15m. Hence you can call it as a four band antenna! My CP22E VHF antenna and Moxon Yagi for low earth orbit satellite operations can also be seen on either sides and a few cable ties at random, yet to be fixed well. Elements for 40m are on the top, followed by 20m elements and 10m elements. They are kept apart, almost parallel to each other by spacers made of pieces of electrical wiring channels. Antenna elements have been fixed to the spacers using thin nylon ties. Mast is a three element telescopic fiber mast. Ends of the 40m elements have been tied to a 3m long one inch CPVC pipe on the compound wall on one side and to the garden fence on the other side.

Here is the preliminary performance report from reverse beacon network using CQ calls sent from my FT-710 by keying in the letters, as I was too tired after the antenna work to send with regular spacing manually. CQ on 7010 kHz has been picked up by VU2PTT at 171 miles with a signal to noise ratio of 19 dB. CQ on 21010 kHz was picked up at VU2TUM at 1186 miles with SNR of 5 dB. That was third harmonic resonance of the 40m elements as the fan dipole does not have elements for 15m. 15m elements cannot be included in a fan dipole along with 40m elements as both will offer low impedance at the feed point. On 14010 kHz, it was picked up by E28AC at a distance of 1679 miles. No pick up was noted on 28010 kHz, possibly because I tested after night fall.

That was the performance on SSB during Airnet India at 7.46 pm IST. I was hearing VU3LLL on 7150 kHz with a report of 5,9 + 20 dB. I could get at report of 5,9 + 10-15 dB at a distance of 130.5 miles.

What you heard was a brief audio clip of a DX station working on 21275 kHz, with a signal strength of over 5,9 + 10 dB.

VU3RAZ signing off with VU2YK from New Delhi, at a distance of 1207.6 miles from here. Soon after that VU2YK called QRZ and I had a short QSO with him and got a report of 5,7. Had to sign off because of the high band noise. Though I have made this video short, it was a long process of homebrewing the multi-band fan dipole. I had spent two days on it, fixing the separators and mounting the antenna on the telescopic pole. In fact am too tired to make a long video! The work is far from over as I have to tune the antenna elements for each band. At present I am operating using the built-in antenna tuner of my FT-710, which tunes well on all the four bands.