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Reviews Categories | Receive Accessories | Timewave ANC-4 Help

Reviews Summary for Timewave ANC-4
Timewave ANC-4 Reviews: 67 Average rating: 4.4/5 MSRP: $199
Description: Antenna Noise Canceller
Product is in production.
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W2JEM Rating: 5/5 Jun 7, 2012 14:36 Send this review to a friend
It's all about the antenna...period.  Time owned: 0 to 3 months
This device has saved me much heartache and headache, but not without some experimentation and a somewhat-frustrating trial-and-error learning process.

I have a Panasonic Plasma TV two floors up and I can always tell when my wife has gone to bed and turned on the TV because any sense of clarity and coherency that emanated from my IC-7700 gets completely squashed in a most horrible, deafening pool of the worst QRM you have ever heard!

I purchased the ANC-4 mostly out of desperation, because I did not want to either replace the TV or disallow my wife her quality time (not that I would even have a chance of succeeding at that!). I'm so glad that I did it, because I have this thing working well on all bands now for all sorts of noise sources, some of which I didn't even realize were local. Now I'm very happy:)

I cannot stress enough, however, that the device itself is only half the solution - without the complimentary, unique-design noise antenna that I "conjured" up, you wouldn't be reading this. I tried different lengths of wire routed many different ways until I finally settled on a 15' piece of AWG 16 stranded strung across the ceiling. It seems to work well on all bands, so far. You will have to perform the same steps, using experimental configurations until you hit upon it. But that's what it's all about anyway, right?

The other little caveat is that I had to arrange the switch settings contrary to the recommendations presented in the ANC-4 manual.

If you have the patience and desire, this will be worth a try for you to rid yourself of noise.

Good luck and enjoy your new-found peace and quiet!

K4GHR Rating: 5/5 Mar 6, 2012 16:44 Send this review to a friend
Awesome! The key is the noise antenna.  Time owned: 3 to 6 months
This is a great product that works as advertised. If you struggle with it, my guess is your noise antenna is not correct for your situation. Check the manual and try different noise antenna configurations as suggested.

It took me a while to get the hang of it, but I can now take S9+ noise to nearly zero. Amazing product!

73, Brent
KB9MVW Rating: 5/5 Jan 3, 2012 10:48 Send this review to a friend
Very Good  Time owned: 3 to 6 months
Did not think it worked well untill I expermented with the noise antenna.Getting this right is a must. I have a plasma tv that just destroys 160m. With the timewave it fixes the problem..There is a definate sweet spot. Its a lot like adjusting a manual antenna tunner on a finicky antenna.This Product has solved my noise issues. Do not think this is plug and play you will have to experment to get it right..great product
KD5VC Rating: 4/5 Aug 6, 2011 07:26 Send this review to a friend
Helps in Some Cases  Time owned: more than 12 months
I got the ANC-4 used a couple of years ago. Mine came with a vertical whip. I have used it with the whip as an active antenna. You can set it up without the main antenna and experiment with wires and verticals to increase the noise level. Then using gain and phasing you can improve the S/N ratio. If you can't hear the noise with the main antenna disconnected, then you need to do some antenna work to get any performance.
K3DOS Rating: 5/5 Jul 19, 2011 05:37 Send this review to a friend
Indispensable Accessory  Time owned: more than 12 months
My QTH is a 1/8 acre suburban property. There are close in neighbors on all sides and they are all electrically noisy. I'm also within 200 meters of the Amtrak electric line between Washington and Boston but thanks to the ANC-4, none of that prevents me from copying weak signals.

The ANC-4 does require careful tuning however. You can't just take it out of the box, turn it on and expect the noise to go away. A proper noise capture antenna is a must too. Outside, end fed with coax, close to the noise sources works best for me. There's a learning curve associated with its use too, but once the unit is set up right and you gain experience tuning it, the ANC-4 is indispensable in high noise areas.

A note on tuning. The noise gain adjustment is critical. Start with minimum gain and increase slowly while adjusting the phase controls until you find the best null. With experience you'll be able to eliminate the offending noise completely.
KM6CZ Rating: 3/5 Jun 5, 2011 13:52 Send this review to a friend
Not the best solution  Time owned: more than 12 months
The unit does work if the noise is captured by the receive antenna is close the same level of noise seen on the main antenna. I mounted a vertical element (1/2 element of TA-33 driven element) above the TA-33 and am able to tune out a lot of noise. There is a 1-2S penalty insertion loss though. I don't believe the range on this unit is sufficient. A much better implementation is offered by DX-Engineering (at a much higher price, of course). The internal antenna is useless unless it is right next to a noise source (e.g., PC). Its not junk, but could use significant improvement in phase range.
G4KSG Rating: 5/5 Dec 28, 2010 09:13 Send this review to a friend
Amazing  Time owned: 3 to 6 months
I've had the ANC-4 for some months now and have at last got the pick-up antenna the right size and in a convenient place. I have a nasty noise/buzz on 20 m at about S8/9 that moves around a bit day to day but is stable minute to minute. 20 m noise here is usually about S3 without it and bearable but set the ANC-4 up correctly and it just disappears. Occasionally I switch the ANC-4 off to see if the noise is still there and it often is. I can well recommend this bit of kit.
KW6G Rating: 4/5 Dec 26, 2010 16:55 Send this review to a friend
Works well, but still learning how to use it.  Time owned: 0 to 3 months
My Christmas present this year. Have been plagued by what I believe is Plasma TV noise for over 2 years now. Needed to do something, so I opted for the Timewave ANC-4. I get 15-20 db max of noise reduction with the supplied wire noise antenna (as measured on my 756proII scope). It definitely performs as advertised. It will reduce the noise, but not eliminate it altogether. Still learning how to tweak the thing, though.

Manual is good with clear instructions. It would be cleaner, however, if it had a whip antenna. Pulled the cover and noted that the PC board has a pad for one, so if you wanted, you could solder a nut onto the board and get a whip from Radio Shack, drill a hole in the top and away you go.

I constructed a short dipole per the manual to see if I could get a more significant null. It did not work as well; not sure why. When I plugged in the dipole to the RCA jack a noticeable lack of gain happened when the plug was fully inserted, engaging the shield portion of the RG-58 Coax. Not sure what is happening with that! Checked the antenna with a ohm meter - no shorts, so I am still puzzled. Next step is to take the dipole outside and try again. I will update this review after that gets done.
K9OZ Rating: 4/5 Nov 25, 2010 11:00 Send this review to a friend
Works in my situation  Time owned: 0 to 3 months
I've been battling very bad line noise, and made the jump to buying a noise reduction device from Timewave, the model ANC-4. It uses a second antenna, picks up the noise, moves it 180 degrees out of phase, and removes the noise before it hits your radio.
It sounded too good to be true, but it does work.
It's not simple, and not 100 percent. After reading reviews, I saw a lot of positive, but also saw people who said it did nothing and they returned it.
For the first couple days I was in the did nothing category, but I kept experimenting with different receive antennas, until I found a combination that worked. If you aren't picking up the noise on the second antenna, you can't use it to phase out the other noise. So that's the key.
Now I'm using the dipole as my main antenna, and the vertical as the noise antenna. I have it set up so I can switch antennas quickly, using the vertical as main and dipole as receive.
Meanwhile, my noise has gotten worse, so this is the only thing keeping me on the air right now. A video is on my blog, at, showing how it works.
I'm a cw operator, and I've been unable to detect any key clicks and have asked several people to listen for them, with no reports.
N4GG Rating: 1/5 Nov 19, 2010 07:22 Send this review to a friend
Not up to par  Time owned: 6 to 12 months
No, no, no. As K9YC indicated these will add key clicks and have modest (at best) dynamic range. Do you really want a low dynamic range box in series with that nice new K3 or even FT-1000MP that can do 145 dB BDR? Worst problem is the phase shift control should only control phase shift, and over 180 degrees. In this very weak design the phase control only covers about 150 degrees, so with the two switch positions you can cover 300 degrees out of 360 degrees. hat's why you will often need to move the noise antenna - which should not be necessary - to get the phase angle you need because the ANC-4 can't. Next problem is the phase control severely changes gain at the same time. This is why it can take minutes instead of seconds to find a null - if you find one at all. Its a sloppy deign and performs as such. Buy the MFJ - much better for similar $$. Or break your piggy bank and buy the best - the DXE.
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