Comparing 4 magnetic loops for hf

Рет қаралды 14,336

4 жыл бұрын

Comparing the MLA-30, Cross Country wireless, Bonito ML200, and the Wellbrook 1530LN magnetic loops on HF the length of the wire used on the ccw, mla30 and the bonito is 5m and not the diameter of the loop which will be approx 1.6m

Пікірлер: 33

@dannyshortwave 4 жыл бұрын

Excellent comparison of the loop antennas. I'm impressed with the Bonito loop. Thank you for posting. 👍

@dave10524 4 жыл бұрын

Thanks , Bonito it is when I can afford to upgrade the MLA-30, for now very happy with it's performance.

@jayhiggenbotham6864 4 жыл бұрын

Thanks for the comparison, it's just what I was looking for.

@MatthiasLenardt 3 жыл бұрын

Thank you for sharing your results. Keep on listening 🎶👌

@Radio_Activity 4 жыл бұрын

I've had my MLA-30 and CCW for several months now and my findings are the same as yours. I have found that the CCW outperforms the MLA-30 below 6 MHz but above that the MLA-30 is clearly better.

@MitchPlehn 4 жыл бұрын

Great vid on the comparison! Thank you!

@Radio_Activity 4 жыл бұрын

Very interesting. Disappointed to see how relatively poorly the CCW has done here. Recently ordered the CCW. Perhaps I'll pick up the MLA-30 as well as they're pretty cheap and see how they both compare in my environment. CCW have a good track record. I've heard some terrible reports on the MLA-30 so I'm sure there are a lot of factors coming into play. I'll probably get one. All in the name of research of course ;-)

@SoCalFreelance 4 жыл бұрын

Helpful video, thanks for uploading 👍

@crosscountrywireless 4 жыл бұрын

Interesting comparison. The CCW Loop Antenna Amplifier is designed to have a very low input impedance to match small (1m diameter) thick loops. We tried it with a 5m loop but it was a poor impedance match and it only outperformed a 1m loop below 20 kHz. If you can re-run the comparison but with say a 1m loop made from coax cable you will see a different set of results.

@UKAFG 4 жыл бұрын

thank you Chris I will be experimenting more with the loop I have tried them with 1m 3m and 5m wire loops and all comparison stayed pretty much the same I will try them with a 1m coax loop as suggested, it is strange though if it is designed for use with a 1m diameter loop that mine was supplied with a 3m diameter loop, has this now changed and being shipped with a smaller loop

@crosscountrywireless 4 жыл бұрын

@@UKAFG There may be some confusion here. We supply a 3m length of wire with the amplifier. This will make a loop with a diameter of 0.95m. When you say you are using 1, 3 and 5m wire loops is this the length of the wire or the loop diameter?

@UKAFG 4 жыл бұрын

@@crosscountrywireless it is the length of the wire not loop diameter

@brianbreczinski3651 4 жыл бұрын

Thanks for doing this comparison.

@fortesmentum1719 4 жыл бұрын

Very good comparison. I notice that Welbrook claim that the 1530LN is suitable for airband - but assuming that this is not the case given your review. Can you confirm this for me please as I am about to purchase a loop. Thanks Ian

@milekokotov1964 4 жыл бұрын

Very good video comparison! I am just wondering if the same power supply voltage for magnetic loops affected results? Best regards!

@cto511987 3 жыл бұрын

There were some comments I"ve seen where the Bias T from the SDRplay (4.7v) is not nearly what the MLA30 needs to supply it which is between (5v-12v). Folks had issues not using the provided Bias T from MLA30 assuming the Bias T supplied from the SDRplay RSPdx would suffice.

@antalperge1007 Жыл бұрын

@@cto511987 Wow, that was helpful! So do we need to turn off the inbuilt Bias T in the SDRPlay?

@cto511987 Жыл бұрын

@@antalperge1007 Just relaying information from other accounts but my own experience has been mixed. I don't know why but there have been times one or the other is better for signal strength. Mystery.

@g4jnw 4 жыл бұрын

Would have liked to have seen a comparison with a Wellbrook ALA-100 as thats meant for wire rather than the 1530LN is a fixed loop that way you could have tried the same length, the CCW is meant to have 3m wire too so a better comparison would have been 3m with all. Just a thought.

@UKAFG 4 жыл бұрын

Hi Les I have had some time with all the loops and tried different lengths of wire for the loops 1m, 3m and 5m (wire length not the diameter of loop) the results across the bands on hf were all similar whichever length of wire loop I used, the difference was that the longer the wire the better each loop performed at LF but the actual noise snr etc was pretty much identical as in the comparisons, as the video was already long I did not show the comparisons with the shorter lengths of wire as it did not show anything differant if it had it would of been included

@jil2net 4 жыл бұрын

Thanks!

@consciousness1237 3 жыл бұрын

You should do a comparison video of the youloop to the other loops it seems amazing especially with a sdrplay RSP-DX HDR mode. AA4CP Chuck Port Salerno FL USA

@cto511987 3 жыл бұрын

I have seen a video with that comparison you can find here on youtube and the youloop did not do nearly as well as the MLA30

@rbridge4090 3 жыл бұрын

Totally agree. I use the same combo ( I made a detailed reply to your post but KZfaq bombed it out when I went to make an edit, ho hum..). Suffice to say I have an amazing DX that I hope will be acknowledged via eQSL.

@PaulLangford-hs6wc Жыл бұрын

Try making a loop from cheap rg6 coax,use the same length as the supplied wire.just use the outside of the coax.you will see the difference then.

@snaily1972 4 жыл бұрын

I'd be interested to see how the MLA30 would work with 1m coax loop and not the thin standard wire.

@LeeDonaghy 4 жыл бұрын

already removed the poor coax on mine added a BNC and have some copper wire , must give that a go some time.

@kellypainter7625 4 жыл бұрын

@@LeeDonaghy He is talking about replacing the loop with a coax. You connect the outer shields together to form an electrostatic shield which eliminates E-Field noise - only the B-Field is received. I am awaiting a my MLA-30 which is on a slow boat from China right now. I would think that a metal box would be better than the stock plastic box as well. I anticipate tearing mine up after I play with it a bit. The prices of these other loops is insane.

@tribulationprepper787 3 жыл бұрын

NOW YOU NEED TO DO THE SAME COMPARISON ALL OVER AGAIN... using the upgraded MLA-30 Plus! I bet your results will be different.

@cto511987 3 жыл бұрын

Heard it was the same as the regular MLA30 except with the gain turned up in it's internal potentiometer. Turned counterclockwise to get higher gain.

@tribulationprepper787 3 жыл бұрын

@@cto511987 You are probably right. From the makers point of view, I can see... 1. turn up the gain, 2. print a plus sign on the packaging, 3. Sell everybody including non-plus owners a "new and improved version. Brilliant marketing! Anyway you slice it, these are both good antennas. Here is one user who tested both, side by side, here on KZfaq. Take care kzfaq.info/get/bejne/qZaPndV21crLd30.html&ab_channel=OfficialSWLchannel

@jakebrodskype 4 жыл бұрын

Do I understand correctly that the Bonito amplifier was connected to a 5 Meter loop, whereas the Wellbrook was using their smaller 1 Meter Aluminum loop? That alone could account for a significant improvement in performance. Thanks for the comparison.

@UKAFG 4 жыл бұрын

Hi Jacob in the comparison a 5m wire loop was used that is the length of the wire so approx 1.6m in diameter I have tried all them with different size loops 1m, 3m and 5m (length of wire) and the results were pretty much the same the only difference was the larger loop gave better performance on all at LF but the actual receive characteristics did not change across the hf bands