Amplified radio frequency interference in tube guitar amps

Amplified radio frequency interference in tube guitar amps Tube. Duration : 3.32 Mins.

The cinematography isn't great as I'm watching my hands more than the LCD. In this particular situation I'm getting a lot of interference and noise because in creating a positive feedback loop for a tremolo circuit I over-shot the frequency needed (very low, around 7Hz ) and ended up amplifying only the noise produced by the tube. That noise is what you use to send the tube into oscillation but is not amplified for several reasons. One being that you aren't running the main signal through the oscillator tube, you are using the current fluctuations of the oscillator's grid and cathode to pull the bias of an audio tube back and forth between two points of efficiency. The signal within the oscillator tube is being amplified as it has to be to send the tube into fluctuations and a small portion can actually be accessed through the same cathode that is tied to the audio circuit. However, once the tube is oscillating the dominant frequency is to low for the amplifier to reproduce. So long as you have a chassis that consists of a ground plane completely surrounding the internal circuitry, one of the few ways an actual radio (high frequency) signal can get into the circuitry is through the cable use to connect the amp to whatever instrument that is used to supply a signal. Unwanted frequencies are shelved off at a determined point by running the audio signal through a resistor just before it enters the first gain stage. This resistor forms a low pass filter in conjunction with ...

Tags: Tube amp, interference, miller capacitance, grid stopper, guitar

Outdoor FM Antenna Installation

Outdoor FM Antenna Installation Tube. Duration : 9.13 Mins.

This is a video that shows how the Keykeeper and I installed the Antennacraft FMSS outdoor FM antenna along with a signal amplifier that also functions as a splitter. This will later feed a stereo receiver and an HD Radio tuner. I'm very much in agreement with the reviews. This antenna works very well. If you have a place to put it, it will dramatically improve the reception of FM radio in your area. At the end of the video, you are hearing a station that is playing from approximately 40 miles away. At , this outdoor FM antenna is a steal if you need one. Should you want to put an antenna up but don't feel comfortable climbing up on the roof or your antenna mast to do it, you could also hang this antenna in your attic if there is room. It would still perform reasonably well. Note that an omnidirectional FM antenna won't work well for everyone. If you live near a water tower or similar large metal object, you may need a directional antenna for good quality sound.

Tags: uxwbill, keykeeper, outdoor, FM, antenna, installation, Antennacraft, FMSS

FREE DOWNLOAD! Watch 3000 live TV channels on your PC!

FREE DOWNLOAD! Watch 3000 live TV channels on your PC! Video Clips. Duration : 0.98 Mins.

Now you can stop paying a monthly bill for your television service. YesGoNow! TV is a free service that offers 3000+ channels of live, streaming television. This program requires no installation, and is completely free, forever! The channels are seperated by country, with over 140 countries...

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DIY Antenna How to make a Cantenna Antenna + Can- popSiren

DIY Antenna How to make a Cantenna Antenna + Can- popSiren Tube. Duration : 4.63 Mins.

Dr. Kiki Sanford shows you how to make a sweet Cantenna (Antenna + Can)

Keywords: DIY, Antenna, Cantenna, Best, of, Revision3, popsiren, Sarah, Lane, Dr., Kiki, Electronics, Web, 2.0, Gadgets, Computers

Great Price PCT PCT-MA2-M for $23.99

PCT 1-PORT BI-DIRECTIONAL CABLE TV HDTV AMPLIFIER SIGNAL BOOSTER WITH PASSIVE RETURN PATH Best

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PCT 1-PORT BI-DIRECTIONAL CABLE TV HDTV AMPLIFIER SIGNAL BOOSTER WITH PASSIVE RETURN PATH Feature

• Not For Use With Satellite Tv. Product Is Compatible With Antennas And Cable Tv Only
• Helps reduce snow and pixilation caused by weak TV signals.
• May improve HDTV reception. Your experience may vary based on the quality cable TV or antenna input signal
• Provides 15dB (32x) signal boost. The amplifier should be installed BEFORE splitters and long cable runs for best results.
• Compatible with all cable TV and over-the-air antenna signals.

PCT 1-PORT BI-DIRECTIONAL CABLE TV HDTV AMPLIFIER SIGNAL BOOSTER WITH PASSIVE RETURN PATH Overview

If you are having cable TV picture problems this may be the product for you. It is NOT compatible with satellite TV, and will actually block satellite reception - so do not order it if you have satellite TV. This product will improve your cable TV picture and reduce pixilation, snow, and audio drop-outs that are caused by a weak signal level. It is compatible with all cable TV systems and services. You may or may not notice a difference in cable modem speed when using the amplifier. A number of factors influence cable modem speed, and there is no guarantee a booster will improve modem performance. If you are boosting an HDTV antenna signal, you should get the best HD antenna you can afford BEFORE using a booster. This signal amplifier IS NOT a substitute for a good antenna. If you are using an indoor antenna or are having HD reception problems with just a single TV attached to your outdoor antenna, this product will likely not improve your reception. If you are uncertain if this product will work for you, contact your retailer before purchasing.

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*** Product Information and Prices Stored: Feb 25, 2012 01:24:14

How to fit a UK TV plug to coaxial cable

How to fit a UK TV plug to coaxial cable Tube. Duration : 4.20 Mins.

How to fit a UK TV plug to coaxial cable and solder it to guarantee a good DC connection for use with remote extender 'magic eyes' or masthead amplifiers. www.satcure.co.uk Soldering tips at www.glodark.com

Tags: UK, TV, plug, digital, cable, freeview

1 x 8 Adjustable HDTV Distribution Amplifier

1 x 8 Adjustable HDTV Distribution Amplifier Tube. Duration : 5.23 Mins.

Buy NOW on SALE for ONLY 179.95! abitronixdirect.com DataComm Electronics 1 x 8 Adjustable HDTV Distribution Amplifier is designed to identify the range of dB strength received from the incoming cable and/or antenna signal. This unique feature along with independent adjustable attenuations on each of the 8 outputs ensures optimum signals are achieved for true HDTV quality at every location. Perfect for home, hotel, condo, building, MDU and MSO solutions. High Def Adjustable Amplifier -70-0039 - abitronixdirect.com

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Great Price Motorola for $47.90

Motorola Signal Booster 4-Port Cable Modem TV HDTV Amplifier with Active Return Cable Modem Boost Best

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Motorola Signal Booster 4-Port Cable Modem TV HDTV Amplifier with Active Return Cable Modem Boost Feature

• The BDA-K4/RA is a bi-directional active return cable TV amplifier designed for use in homes. Boosts signal by 5x forward, 2x reverse.
• An active return path boosts upstream signal for broadband devices such as set-top boxes and cable modems.
• Active return should not be used unless Upstream Modem power level is greater than 50dBmV.
• Meets all applicable IEEE surge standards for all output ports, which enhances system reliability.
• Weather seal and protective coating allow use of the amplifier for indoor or outdoor applications.

Motorola Signal Booster 4-Port Cable Modem TV HDTV Amplifier with Active Return Cable Modem Boost Overview

There is nothing worse than having a great TV to watch your favorite programs, while having a grainy or pixilated (digital cable) picture. Motorola BDA amplifiers give your TV signal a boost while maintaining full compatibility with all of your cable services. Simply install the BDA-K4/RA where your cable or antenna comes into your house and begin enjoying a better picture, faster downloads, and a more reliable HD or Digital TV signal. With a name like Motorola, how can you go wrong? The BDA-K4/RA is fully compatible with all cable TV standards, cable boxes, cable modems, routers, HDTV and more. Active return may not fix all of your problems if the product is not installed properly - or if the incoming cable signal is not problematic.

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*** Product Information and Prices Stored: Feb 23, 2012 01:18:10