My latest upload to SWLing Post...

Urban DXing: testing the Bonito Boni whip against a 30 metre longwire & the Wellbrook ALA15030

Urban DX antenna test #5: Comparing 30 metre longwire to Boni whip on LW

Hi there, here is the fifth and final video in this series comparing the Bonito Boni whip to a 30 metre longwire in an urban environment. This time the target signal is Polski Radio on 225 kHz longwave and finally the Boni whip produces clearer audio than the longwire. Despite a significant increase in noise floor, the SNR appears to improve a little. The Wellbrook reception at the end of the video is a final calibration as to what is possible with an H field antenna in a noisy urban environment. Thanks for watching.

Sony ICF-SW77 vs ICF-SW55 vs Tecsun PL-310ET: Radio Aparecida 11855 kHz, Brazil

Hi there, my best reception of Radio Aparecida to-date on the ICF-SW77, although I didn't realise at the time! The ICF-SW55 also performs very well, particularly on the narrow audio bandwidth filter, however, the Tecsun (understandably) struggles with this weak signal, but I think brief audio is heard once the narrowest filter has been selected. Recorded in Oxford UK on 29/12/16 at 20:29 hrs UTC using a Wellbrook ALA1530 active loop antenna. Thanks for watching.

Urban DX antenna test #2: Comparing 30 metre longwire to Boni whip

Hi there, the second comparison video in this series, this time using the large signal from CRI on 6020 kHz. Again, there's little difference in SNR performance between the 30 metre longwire and Boni whip. More to come. Thanks for watching.

 

Bonito Boni whip versus Wellbrook ALA1530: Test #6 winner: Wellbrook

Hi there, I've taken a different approach this time - by using what is probably the strongest signal on shortwave at my QTH - CRI on 6020 kHz. With an 18 kHz audio bandwidth filter, audio fideltiy on shortwave doesn't really get much better than this. As might reasonably be expected wiht a huge signal, the difference in the performance of the two antennas based on audio fidelity at least, is much less obvious, despite the signficant drop in SNR with the Boni whip. One more reception video to come, to conclude this first series of tests. Thanks for watching.

 

Bonito Boni whip versus Wellbrook ALA1530: RÚV Iceland, LW Test #2 winner: Wellbrook

Another disaster for the Bonito Boni whip. Here RÚV Iceland can be clearly heard with very decent signals on 189 kHz and 207 kHz using the Wellbrook ALA1530. Switching over to the Boni whip results in no discernible audio with the disappearance of both Icelandic signals under a blanket of noise. I've never seen anything like it and I actually reverted back to the Wellbrook to confirm this was as a result of the Boni whip antenna. Terrible peformance, even worse than the previous example with Medi 1. Hopefully, the situation will improve on MW and SW. Thanks for watching.

Bonito Boni whip versus Wellbrook ALA1530: Test #1 winner: Wellbrook

Hi there, here is a signal from Medi 1 on LW 171 kHz with nice audio on the Wellbrook ALA1530. Watch as the Wellbrook is unplugged from the Elad FDM DUO and the Boni whip connected (using the supplied radiating element). The noise floor jumps by around 20 decibels and the resulting audio is severely compromised. I read that the Boni whip is often very ineffective in buildings, so I put both antennas in the garden to give it the best chance of success. The problem is however, that my garden is often noisier that inside the house because our neighbours surround us quite closely on three sides. Anyway, test number 1 is a disaster for the Boni whip. Let's see what happens next. Thanks for watching.