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Reviews For: W4RT Gap Hear-It DSP (bhi) for Yeasu 817

Category: Filters, Audio: (DSP and others)

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Review Summary For : W4RT Gap Hear-It DSP (bhi) for Yeasu 817
Reviews: 24MSRP: 179.00 installed, 149.00 module
Description:
The GAP Antenna Hear-It DSP Module for the Yaesu FT-817 offers bhi
Ltd. noise cancellation inside your FT-817. It features 4 levels of noise
cancellation, single button operation, low-power consumption, low
distortion to audio signal, doesn't interfere with the FT-817’s internal
battery pack, can be used with optional filters, completely internal
fitting, visual and audible indication of filter level, two demo modes. bhi
Ltd. utilizes dynamically-adaptive neural-network technology to achieve
noise and tone reduction that is remarkably more impressive than other
noise reduction technologies available for the FT-817.
Product is not in production
More Info: http://www.w4rt.com
# last 180 days Avg. Rating last 180 days Total reviews Avg. overall rating
00245
KG0WX Rating: 2003-11-07
I'm speechless! Time Owned: 0 to 3 months.
This thing ROCKS!!! I just tested it on a s-9 60hz buzz on 20 meters. The buzz made the frequency totally unuseable. Push a button - BAM! The noise was completely crushed! Even at it's max setting (4 of 4), there is very little effect on voice signals.

The only minor drawback is the dsp only works with the internal or external speaker - not through the audio output from the ports on the back of the rig. I only use those ports for PSK31 so it's not a mode for DSP, anyways.

W4RT's service was outstanding. I mailed the radio priority mail 11 am 11/1 and got it back ups ground 9 am 11/7. Wow!

If you want to hear just how good this beauty is you can go to the W4RT site and they have audio samples.

If you are on HF, this DSP is a MUST have!
M0NKD Rating: 2003-10-18
Remarkable & Astonishing NEDSP1061 Time Owned: 0 to 3 months.
This BHI circuit for the 817 is manufactured in the UK and it's model No is NEDSP1061. Mine was fitted by Radio World UK on a Saturday afternoon. I left it with them for just two hours, fabulous service guys!

The gadget is astonishing! I previously used BHI's NES10-2 DSP speaker, though because I've always thought the sound from the FT-817 speaker is astonishingly good, this mod is even better. The noise reduction is simply fantastic and although it only works at an audio rather than IF level, you really wouldn't know that to listen to it. I rate this as one of THE great accessories for the FT-817 and an absolute MUST have.

There is no other radio on the market that has a DSP that for noise reduction works so well, it makes good SSB like FM, Fair SSB into Good SSB and often poor SSB into readable SSB, all whilst at the same time getting rid of background noise to virtually Nil!
W4RK Rating: 2003-10-15
Outstanding Noise Reduction Time Owned: 0 to 3 months.
As a very satisfied user of the ClearSpeech unit for several years in several different rigs, I went for the W4RT HearIt Audio DSP initially based upon the convenience of a clean internal installation in my FT-817. Turns out, that was really nice, but not the best part. The performance is truly outstanding and greatly enhances the ability of the 817 to pull weak signals out of the background noise. Because I was, and still am, such a great fan of the ClearSpeech unit, here are some comparisons and observations:
(1) HearIt has faster time constant-good
(2) Multiple levels (4) of processing on the HearIt is very nice-CS has only one
(3) CW is better on the HearIt-sometimes the ClearSpeech does funny things at certain CW speeds and tones, however voice is always good.
(4) Some DSP artifact on voice highs in levels 3/4 on the HearIt - not bad, but noticeable. No artifact found on CW.
(5) Autonotch very good on both HearIt and CS, 40 Meter SSB in the evening is a great demo for both.
(6) The HearIt human interface is really well done. Clever design gives easy control with one small button switch and one multi-color LED.
(7) Current drain of 45ma is reasonable considering the spec for receiver drain is 450 ma. A 10% increase is OK for the benefit you get.
(8) The button and LED installed on top of the 817, just ahead of the speaker, is very inconspicuous.
(9) W4RT Electronics continues to delight with outstanding service and quick turnaround. The HearIt installation is done at W4RT Electronics by a Yaesu certified technician. Don't try this at home :-)

I'll be happy to respond to e-mail requests for additional observations, etc. If you have an FT-817, I know you'll be pleased with this additional capability. No commercial interest in W4RT Electronics, just a very satisfied customer.

73,

Bill
W4RK
Brentwood, TN
w4rk@arrl.net
KC2LBO Rating: 2003-09-30
Like opening and closing a noise door! Time Owned: 0 to 3 months.
Just got my 817 back with the W4RT Hear It DSP module, the bhi unit, installed... WOW what a huge difference. I've been using a Clearspeech base unit with my 897 and a Clearspeech speaker juggled between the 817 and 857 in the truck, so this leaves the Clearspeech permanently in the truck with the 857 now...

As impressed as I have been with the Clearspeech, and I AM! this "Hear It" really just knocks the noise level down... like opening and closing a door... and a fast, clean installation too.. W4RT did a one-day turn around not including shipping time.

It looks like it was always there... seems a bit odd that the light goes on when its off and off when its on... but who cares, i don't need the light to tell me its working, i can hear the difference... and its great not to have to carry around one more item...

Thanks again W4RT! (I have no commercial or other interest here, just a satisfied customer)