X phase 2 qrm eliminator

If you live in the city or close to industrial facilities, you probably have high RF-noise level on your HF radio receiver from local sources that causes interference and difficulties in receiving weak radio signals.

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X phase 2 qrm eliminator

The QRM Eliminator is based on a totally innovative concept and cannot be compared to the performance of noise blanker or DSP circuits. Removing the noise before it gets to the receiver is the superior method of interference reduction. The QRM Eliminator is inserted into the feedline from the trx to the antenna without any additional modifications required to the radio. The box has a built-in PTT control which enables the Eliminator to stay connected during transmit. An additional auxiliary receiving antenna is required, though, like a 2m antenna or simply a couple of meters wire in the shack. The unwanted signal is received with both antennas resulting in different phases. The QRM Eliminator now allows to adjust the phase angle as well as amplification in a way to cancel out the unwanted signal before it reaches the receiver front end! It's based on a totally innovative concept and cannot be compared to the normal 'noise blanker' performance. X-Phase is located in a shack in the vicinity of your TRX and is included in the gap of the antenna feeder. Thus, the "Main" jack must be connected main operating antenna or PA input.

It actually removes the noise before it reaches your receiver.

I found out that the antenna for receiving QRM, the auxiliary or secondary antenna, holds the key to optimum performance of the QRM eliminator. A single wire along a shelf in your shack is, for what I tested, not enough. There is one specific antenna that does an amazing job. First of all I need to explain about my antenna setup. My main antenna was a 13m 31 ft tall vertical. This antenna setup allows me to work on all HF bands. The downside… it picks up loads of man-made noise.

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X phase 2 qrm eliminator

I found out that the antenna for receiving QRM, the auxiliary or secondary antenna, holds the key to optimum performance of the QRM eliminator. A single wire along a shelf in your shack is, for what I tested, not enough. There is one specific antenna that does an amazing job. First of all I need to explain about my antenna setup. My main antenna was a 13m 31 ft tall vertical. This antenna setup allows me to work on all HF bands.

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The unwanted signal is received with both antennas resulting in different phases. Rating Required Select Rating 1 star worst 2 stars 3 stars average 4 stars 5 stars best. The unwanted signal is received with both antennas. If the DX signal is gone as well, than it means that the AUX antenna picks up to much of the wanted signal together with the unwanted RF-noise. If a review is posted that you believe is unfairly critical of your product and you wish to respond with useful information contact eHam's Product Review's Manager to request the addition of an "eHam. The CCD is typically a quiet antenna that's close to loop levels. The two antennas received unwanted signals, resulting in different phases. Apart from the obviously home-made control labels, the device is well constructed. My first test of the X-phase was to deliberately generate some noise in the yard. However I have to say this unit works works very well indeed. The maximum RF-power of the transmitter should not exceed W, so that can be handled by the relays used in this Kit-complete.

If you see figures regarding solar activity, you could conclude that we are very close to the start of a new solar cycle. That means within a few years my beloved 10 meter band will open up again for DX. On 10m even up to S9.

The X-phase took it out completely. I had once owned an MFJ noise cancelling product and never could get it to work. This antenna setup allows me to work on all HF bands. Having some aluminium tubes left form earlier antenna projects, I installed a 2. In the past I too had problems and have tried many cures including specialist antennas and filters. During rain, the noise is not present and my atmospheric band noise is S3. I left an electric drill running. Here is just a PTT. I have seen assembled units from Ukraine having the RF-sensing and other changes to this design. My noise antenna is a homebrew active loop. Rating Required Select Rating 1 star worst 2 stars 3 stars average 4 stars 5 stars best. There are dozens of vendors with kits as well as some assembled ones. The circuit employed is similar to the others and identical to Wimo. Use a rope!