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Respectfully, what your doing is trying to get others to agree with your 'justifications' for illegal use of equipment. This is like trying to get a judge to agree why you done something illegal. He won't agree. Even a Ham rig won't hear the other radios any better than your CB will so there...

In the northeast US, nearly every morning after 8am, a group gets on 144.205 SSB. The better stations are working well over 300 miles over mountain terains. My station is not of that calibere but still routinly work out to 300 miles off a single 12 element M2, 100 watts with a KW480 driving a...

I have done this in my truck using a cell phone adapter that outputs on the FM band. A cell phone unit has restricted audio response on the low end by design. A standard I pod FM unit transmits in steieo but used with the correct adapter or cable to change to mono also work quite well otherwise...

10 meter FM simplex depending on antenna gain, height and power would be about 90 miles under all those best conditions assuming about 100 watts. FM repeaters ranges are about 60 mile to a mobile when the repeater is high and to mobile is on high ground.

Switching power supplers will often generate a drifting signal in the 18 to 30 mhz region.

Look up the paper on medical devices operating in the Radar band. You will see that the system is so complex in signal addressing and short ranged that a Ham signal and Radar will not interfere and the device will not interfere with any other user. Look at the frequecy chart. These peticuar...

If you go to the Goggle 6m Larcan group., there is most all the info you need. Some have had grief trying and many have had sucess. Don't drive with more than about 8 to 10 watts. In a well converted unit the gain is well more than 20db at 1000 watts + out.. Should use a bandpass filter as...

A point you need to know is an HT is not meant for repeated long time transmitts at it's high power setting. You can get a Yeasu FT 2900 for about $130 +/- and have 75 watts at it's high setting then even that radio should not be used on continious long time transmitts at that power setting...

Consider the Diamond GZV4000 switcher. Takes 40 amp peaks and 30 continious. Has a lighted meter to see either voltage or current. Voltage out is adjustable 5 to 15 volts. Front panel 6 amp terminals and car type 10 amp outlet for utility uses and rear binding posts for high current...

You won't see any noticable difference in receive or transmitt. Only antennas that do this config and get worthwhile improvements are in the UHF range where size is small. One behind the other has no effect at all. The theory behind antenna operation is what your missing. The spacing and...

You won't be able to improve it much. I had the 6 element and was just as bad but side rejection was stellar as the antenna does not respond "as well" to regular vertical polarization from another vertical. The antennas shines on DX but is no advantage on Tropo contacts (close in point to...

WOW! It is a simple thing to understand that when the antenna is a match to the feedline that the length of the feedline does not matter. Much of the time the match of the antenna to the feedline is not perfect but if it is close, why bother with line length changes? If the antenna is not a...

Very often a hum after startup is the winding is loose on the core. In big commercial units there are wooden wedges used to tighen the winding. In smaller linear units the steel metal cabinet will modulate from the 60 hz magnetic field in the core being so close. So you can have at least 3...

Is the original poster awhere of the following? At 14 volts it would take over 200 amps to = 3000 watts /2 for efficiency to get 1500 watts RF output from an amplifier. Most high power amplifiers are 50 volts or higher so the devices are not so current hungry, much improve IMD and smaller...

Receive in the HF range generally has about a 3 to 4 db noise floor from external sources in most locations. If you hear an increase in receive noise when an antenna is connected, you don't need a preamp. Adding a preamp increases the same noise you hear as well as the signal. There is no...

If anyone is interested in why this conditon exists, here it is. It depends on where in the AC cycle you last turned the power off. This can leave the core magnetized. The next time it is powered up the core presents a very low impedence to the AC input and causes it to draw more than normal...

There is a lot of info missing from this thread. Every radio is not deisgned the same for audio response and if AM and SSB are included, there are large differences between the modes. . On AM it depends on the frequency response (audio bandwidth) of the radio's audio circuit as to what you...

Here is what your dealing with. With the amplifier in standby, the radio is seeing some SWR upset through the total amplifier transmitt/receive relay through circuit to the antenna. When you put the amp on for transmitt, the radio is seeing an impedence change again when transfered to the...

Several things. Those Guitar tubes are meant for audio only as noted in the specs. They have too much inter electrode capacity and not enough plate dissapation to use for HF application. They are Tetrodes and require good screen voltage regulation. To get the same power equivelent from lower...

The only 3-500 tubes made now comes form China. Any others are old stock and whatever you find on the market. An AL80B is often had in the $800 range +/- plus shipping at nearly 60 lbs.