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Reviews Categories | QRP Accessories | W4RT Electronics "One BIG Punch" Help

Reviews Summary for W4RT Electronics "One BIG Punch"
W4RT Electronics Reviews: 39 Average rating: 3.8/5 MSRP: $49.95
Description: One BIG Punch (OBP) is a custom add-on accessory for the Yaesu MH-31 microphone commonly used with many Yaesu amateur radios such as the FT-817. The One BIG Punch is an AF-based speech compressor specifically configured to provide remarkable increase in talk power while maintaining good audio quality (articulation) for communication purposes. The unit can be mounted inside the MH-31, requires no additional electrical power, and can be turned on or off by using the MH-31's TONE switch. The One BIG Punch can also be install inside the FT-817 and then no modification to the MH-31 is required.
Product is in production.
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KD9MAR Rating: 0/5 Jul 22, 2015 14:44 Send this review to a friend
Complete junk!!!  Time owned: 0 to 3 months
What a rip off. Getting nothing but bad audio reports with this thing. That's what I get for not looking at product reviews before purchasing. RF feeding back into the mic and sounds like complete garbage. Lesson learned.
W8DMM Rating: 0/5 Jan 27, 2015 09:37 Send this review to a friend
W4RT One Big Punch  Time owned: 0 to 3 months
Purchased the OBP from AES in Clevelandd to use on my FT 897. Could not get any audio at all. Sent Ralph two emails asking for help to figure out the problem--NO RESPONSE. Took it back to AES and hooked it up on their FT450-still no audio. AES gave me a refund. AES called Ralph-guess what-- operator fault. I could go on and on but enough said.
W4RT is what I call a ham screwing another ham.
If he operates this way he won't be in business very long.
Dave W8DMM
VE2DIY Rating: 0/5 Oct 8, 2014 15:43 Send this review to a friend
One big let down  Time owned: 0 to 3 months
installed on my mh-31 for my yaesu ft-817nd. The compressor is functional but reduce speech intelligibility instead of helping. I tried different mic gain setting, talking closer or far from the microphone. For it to work a little bit I need to shout in the microphone with ssb mic gain at 30-40% and then peoples prefer the compressor off and mic gain to 100%. The original tone control was more useful, don't install this in your microphone but instead get yourself the mh-36.

Maybe this was effective with the heil optional mic cartridge ? maybe it would work better with an electret cart ?

The biggest let down was when I sent an email to W4RT to ask for information and didn't get any answer from them. I'm happy I had a bad experience with only a 50$ product from them, now I know and won't spend anymore money on their products.
AB9TX Rating: 3/5 Sep 19, 2013 11:41 Send this review to a friend
Excellent product, poor implementation...  Time owned: 0 to 3 months
Well, I knew this product would require modification- so went ahead and purchased the "installed" version.
Checking it out on my FT-450 with the dummy load it worked well only with my mouth 2 inches from the mic- I have a soft voice, so this is not too much of a problem. Adjusted the mic gain in the radio for low, EQ flat. Connected to an antenna it would oscillate and put out horrible wind noise. I can only assume as others that this chip is highly sensitive to RF.
Disassemble- wrap in foil as others, and add .1uf decoupling cap across the +5v and ground.
Works well now, good reports. Made 4k mile plus DX contact on first try.
Bottom line- product is a great idea, poor implementation.
NZ1MT Rating: 0/5 Dec 18, 2012 15:16 Send this review to a friend
One Big Disappointment  Time owned: 6 to 12 months
Bought the W4RT Electronics one Big Punch kit from Gigaparts and installed it in my FT-817ND MH-31 microphone per the instructions. Adjusted FT-817ND SSB mic gain in menu settings to control ALC (per instructions). All on air reports report distortion. Have also done the Faraday shield modification wrapping the W4RT board in foil again with no on air improvement.

Ended up buying another MH-31 and tossing the W4RT mic into the spare parts box.

In summary the "One Big Punch" is "One Big Disappointment". Save your money.
AB1QX Rating: 0/5 Nov 26, 2012 07:31 Send this review to a friend
unhappy  Time owned: 6 to 12 months
Purchased the pre-installed microphone, on-air
audio reports were very bad. Notified W4RT, was told he knew about this, it was caused by rf pickup by his "improvement". Suggested I wrap his unit in the foil musicians use to isolate guitar pickups and ground it. I feel that selling a product with such a known and glaring flaw---without even a warning-- is something less
than candid and reflects strongly on his business ethic. While YMMV, I urge caution.
W5NNN Rating: 0/5 Nov 9, 2012 15:19 Send this review to a friend
Unusable  Time owned: 0 to 3 months
I purchased the pre-assembled version. With OBP on, no one can hear most of my speach unless I shout into the mic. In short, things are much better with it off. No response from the vendor whatsoever, not even scorn. I feel scammed.
K8ESE Rating: 5/5 Oct 7, 2012 20:08 Send this review to a friend
Outstanding service!  Time owned: 0 to 3 months
Just got my OBP modification done and works out very nice...I never could make a contact on my new Yaesu FT 817 the past few months using a "Miracle" portable antenna until now! W4RT folks answered my emails fast, and the service was quick! It is great to know they stand by their product and are sincerely helpful.....I definitely will purchase and have them install the cw and ssb filter board....It felt like for a time that I shouldn't have purchased the FT 817ND because of experiencing poor qrp performance with it, but W4RT came to the rescue....great reliable folks there! ....and their cost is very affordable...
KJ6QLD Rating: 5/5 Jan 13, 2012 22:01 Send this review to a friend
Very pleased  Time owned: 0 to 3 months
Installation was a bit delicate, but the instructions where very comprehensive and accurate.
Speaking into a dummy load with my FT817 and watching the needle on my watt meter, I'd estimate I'm putting out at least half again as much average power on SSB. Had a test QSO with a friend in noisy conditions who reported that with the OBP off he was getting every other word, whereas with it on he was getting almost everything I said. Seems like one of the best bang for your buck options to improve SSB transmission with an 817. Takes up no space, uses no power, turns off with a simple switch, and doesn't cost a whole lot either. I am very pleased.
KK4HP Rating: 5/5 Nov 15, 2011 07:18 Send this review to a friend
Works great, big improvement.  Time owned: 0 to 3 months
Picked one up for my FT-857D on a whim, found a Demo special at AES and it was a good deal. Installation was easy for me but if you don't have experience working with small components, a steady hand, a Weller or similar quality solder work station and magnification, you might opt for professional installation. It took about 20 minutes start to finish. Instructions are straight forward & clear. The ferrite beads are packaged in two envelopes and labeled for the wire in which they are to be installed. No problems were encountered with the installation.

I initially had second thoughts after reading how the OBP primarily referenced the FT-817. The FT-857D has it's own adjustable speech compressor, mic gain and mic equalizer and I was worried that it would be overkill.

Upon testing, it was quite clear that it made a tremendous improvement in the average power output on the external wattmeter compared to the stock mic. In the case of the FT-817, I'd say it would be a must have in order to get the most from QRP operation. On the FT-857D, there is no doubt that it made an improvement in getting heard in a DX pile up. Previously, I had difficulty getting a reply from S9 DX stations, now the radio performs like my 100W Icom rig and I'm able to make those DX contacts.

There's no doubt that the MH-31 is lacking in performance, the OBP is one option that definitely makes a difference.
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