I used to have an SGC DSP speaker. Interested in these though, as switching it in and out is easier than using the DSP in my radio. I looked at the smaller version of the BHI but didn't like the concealed level adjustment. Your tests show that this one doesn't produce the artifacts that the old SGC one did. Sounds very good.
Hi Gordon. After using this for about a week I must say it is definitely as good as I first described and the clarity is superb. I am glad I got it and it seems good value and well designed. 73 tnx
Hi Simon, congratulations with your new purchase. Hope you had a great birthday. Don’t know the price but sounds very good. No deterioration as you said. No watery/robotic/digital effects on the voice even on the more aggressive level. Well worth it. Best wishes Diego
Hi Diego thank you my friend. Yes it is very good indeed I am surprised and pleased. The price was approximately £200 which is a reasonable amount but considering the use it is nothing. I hope we meet up on the bands best 73 good dx
@@M0YKSHamRadio yes considering I see used passive external speakers for 100 and as high as 150 euros. 200 new in the box and with an active noise reduction is a 👍🏻. Hope to catch you on air then! 73
Very interesting Simon, but very expensive. Recently I made a relatively simple noise filter using a single NE5532 op-amp, custom configured as a multi-feedback band-pass filter, operating on the principle of negative feedback. I use a duel-gang potentiometer to adjust the center frequency around the human voice, at about 400Hz to 600Hz. And I have another potentiometer that adjust the Q / band-width. The higher frequencies (where most of the noise lies) are attenuated exponentially above the adjustable voice frequency. So it boosts the voice while attenuating the noise. Listening on HF SSB, even in the noisiest conditions, this is an extremely effective filter that accentuates and clarifies the human voice, even for very weak signals that would otherwise be lost in the hash. A much simpler approach, and it only cost me about $10 in parts to build.
Agreed on the price, i was fortunate to get some birthday cash which I collected up and treated myself lol Your home brew skills sound to be excellent. its always good to be able to build things up that work well. Thanks again and enjoy your weekend.
@@M0YKSHamRadio LULs - I should have mentioned that I'm coveting that bhi speaker, because it does look pretty good! And building my DIY preamp / amplified speaker took me days of fiddling on the bread board to get it right, and then two more days to build it onto a perf-board and sandwich it into a box (along with a little class-D amplifier module). So, it actually cost me a lot of time, other than the $10 or more like $20, I guess. But of course, I do learn a lot with projects like these and enjoy doing them. ; ) But after looking around I see that DX Engineering sells a SOTAbeams Digital Audio Filter Module (bear bones) for $59.99. It's probably not as good as bhi, but maybe for my next project I'll try and make a DSP version. Cheers!
@@reedreamer9518 it is still pretty cool to build your own despite the time commitment. I know that feeling I spent weeks messing with the HF amp a couple of years ago ended up in trouble with the YL for taking over the dinner table. I used the speaker on the HF at first on the FT-1000mp which worked well but now prefer it on my FT-847 as it does a fine job with the weaker Satellite signals. It sounds very good on FM without noise reduction on and on SSB sats I use the noise reduction and bingo! The weak signals are clear and easy to copy. Definitely worth having and does a decent job. The best extension speaker I've had so far. Keep up the good work with your projects, the digital filter kit sounds good. Hope to hear how it goes when you get on with your next mission.
Greetings Simon I always wondered if one of those noise cancelling speakers were worth buying. Sounds good and would be great for my boat anchor radios I have. Back ground noise has been a problem and now I know how to reduce it. Thanks for sharing and have a nice day.
Hi Lyle good to see you pop up. Hope you manage to get one I must admit I had doubts. But definitely not now. Compared to a yaesu icom or Kenwood speaker its not as expensive as it looks have fun and best 73
I've been using one of these for about five years now. I could not work the DX that I do without it. Only downside is bad susceptibility to RF via its power feed, even bhi recommend using a separate power supply to that the transceiver uses. VK4BOB
Thanks Bob. I have had mine nearly two years now and I use it on my FT-847 for Satellite work. It works well especially on the SSB satellites. FM sounds good also but the filters help a lot with weak signals on side band. No problem with RF but only low power for satellite work.
Thanks buddy it should be cool when I run it directly into the video stream. It was only picking it up on my phone on this vid. Will be trying it out soon 😁👌
that "noise canceling speaker" is useless, because it doesnt filter the QRM phase that gets into the receiver, so the weaker signals stay unheard below the QRM level. it would have made sense to instead get a phasefilter first, for example that X-Phaser. that bhi mk2 costs like £200, that X-Phaser is new and ready built for £50 on the net.
@@PIasmaZombie your reply came across as a telling off 😁 I appreciate the QRN eliminator info but this speaker is not having to deal with any noise level as such. It's intention of use by myself is to enhance the audio sound quality which it does nicely. The bands I like to use for DX have minimal noise as I use my Cushcraft beam currently 20m is 0 noise at my end so I don't need extra kit inline. Besides my radio is equipped with a separate rx so if I want to illuminate the noise on lower frequencies I just need to make an out of phase rx loop which won't cost me anything. Even better. 👌😁. Glad to hear your not a grump after all. 73 have a nice night
I've got an earlier and smaller version of the bhi speaker. I couldn't use the radio without it. There's a video of it's use on my RU-vid channel. My version has 7 filter levels, I find that anything about level 5 sounds like it's underwater.
That's well good, Si. I can see that would take a lot of the ear strain off from listening for a longish time. Cheers for that - first time I've seen one working well like this. 👍 Mick
