Can't get more than 75 watts on any mode 160-10 meters. Even when external or internal antenna tuner shows 1:1 SWR
What are you using to check your output power? A cheap meter won't cut it. Also, if your power supply can't provide at least 20 amps at 13.6 volts, you won't get 100W out of this radio. If your power leads are longer than supplied by ICOM, or are less than #12 AWG and more than 5 feet long, you won't get this output power. It sounds to me like your radio is working just fine, its the power source that is failing you.
SOURCE: uniden pc 78 elite cb
Hi, This is a link to your old post re SWR 3....http://www.fixya.com/support/t180697-pc78_elite_cb As stated SWR 3 is too high, it should be 1.5 or lower. Fiberglass antenna are kinda notorious in setup and experience wise have not performed well or at all. Maybe you should try a different antenna (metal rod). Some good brands/models I have tried with very good results are K40, Hokushin, Comet, Oscar, Maldol, Daiwa. To check if you can receive, stick an ordinay length of wire ('bout 9' long) at the center of your radio's connector. RX should work (pls don't key the mic or TX).
SOURCE: instructions for a swr meter/cb radio
An SWR meter is used to see how well your antenna is matched to your transmitter output, just like using the correct speakers with an amplifier.
There are usually two readings. FORWARD and REFLECT
or FWD and REFL
Firstly, make sure the antenna selector is in the correct position and set for the antenna you are using.
Next, switch your meter to FWD (FORWARD). Switch your transmitter to low power and press the microphone key.
Next, adjust the CAL knob for the maximum power reading, but not so far that the meter exceeds maximum!
Keep the microphone key pressed and switch to REFL (REFLECT). If your antenna is matched, the meter should now give a low reading. If the reading is very high, you must match your antenna by making adjustments or by using a matching unit.
A poor match will mean a poor signal. A very poor match can damage your transmitter and cause interference.
When you have a good FORWARD reading and a low REFLECT reading, your system will be reasonably matched and you can then use higher power. Remember that you will need to reduce the CAL knob to a lower setting when running high power.
SOURCE: I reduced power to 2 watts using L14 on Cobra 29 LTD Classic
What you have occurring is one of 2 or both problems.
The first is called "common mode Transference" Its when you have feed back RF traveling down the out side of the coax, which it is not supposed to do, but it happens some times.
Here is the solution to this. It is called an RF choke.
Take about 6 to 8 inches of coax, as close to the antenna as you can. Coil it so that the coax is lined up perfect, coil after coil. Use electrical tape or zip ties to secure in place.
This will stop the RF from traveling down the out side of the coax to the radio.
If you still have the warning light coming on then you could just have a problem with the adjustment to the antenna light.
If the meter says your good with SWR, and the light comes on, then you need to disable the light. Find VR 6 and turn it all the way down. I Don't remember which way turns it down, but if you turn it one way and the light is still coming on, turn it the other way.
This will disable the light, so it will not annoy you.
Most likely the RF choke will fix the problem any way.
SOURCE: External FM antenna
The fix for the problem is simply go to Radioshack and purchase their part number 278-267 which is an "F" jack to 1/8" Male Plug. The cost is $6.09. This should solve your problem. The 75-Ohm antenna plug can now be screwed or connected to the "F" connector.
SOURCE: Kenwood TS 2000X: Low HF TX power output on HF bands ONLY.
Hello, this problem is solved and how?
I have the same problem on HF and VHF 30Watt max output
1.8 MHz-20M 0-5Watt
10M 25 Watt
6M-30Watt
2M-25Watt
70cm 42Watt is ok
23cm 10Watt is ok
thanks
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