Re: [Elecraft] Low power out, ERR TXG when trying to calibrate power

Just to update on this thread: repeating the calibration on 10MHz with 13.8V applied does get to 4/6W indicated on the VFO B display, but on tapping XMIT, still gives ERR TXG (D=228 or thereabouts on the main bit of the display). I'll drop Elecraft an email. 73, Rob, M0VFC On 18 April 2017 at 13:

Re: [Elecraft] Low power out, ERR TXG when trying to calibrate power

Rob, I would try running the TX Gain Calibration with a higher voltage power source - at least 13.8 volts. If it still fails, contact Elecraft support. 73, Don W3FPR On 4/18/2017 5:55 AM, M0VFC wrote: Hi folks, My KX3 seems to have developed a low output power problem. All used to be fine

[Elecraft] Low power out, ERR TXG when trying to calibrate power

Hi folks, My KX3 seems to have developed a low output power problem. All used to be fine, but over the weekend I noticed it now only gives ~6W maximum on CW despite a good SWR indication. I have reproduced this into a dummy load (1.1:1 SWR) and checked DC input voltage (11.2V key down, external

[Elecraft] Low Power Out

I was operating on 80M this evening and noticed that I wasn't getting full power out. Sometimes if I transmitted a carrier, I would get 120W and then it would jump down to 80W. I don't believe it is RF feedback, bad antenna, etc. What I did notice is that in the TX GN HP menu setting for eac

[Elecraft] Low power out on 6 meters

Dave Mine gives very close to the expected power on 6m: 5W set, output 4.7W 50W set, output 52W 100W set, output 99W 120W set, output 119W Measured on an LP100... 73 Dave, G4AON K3/100 #80 -- After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and T

Re: [Elecraft] Low power out on 6 meters

I'm getting 100 watts out with 100 watts requested, 120 watts out with 120 watts requested. 73, Ken K3IU K0EKL wrote: After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and TCXO) I find that I have lower than expected power output on 6m. Firmware is 1.78 and I have

[Elecraft] Low power out on 6 meters

After doing the full calibration multiple times (Synthesizer/Wattmeter/TX Gain/ and TCXO) I find that I have lower than expected power output on 6m. Firmware is 1.78 and I have the rig set to transmit through the 2.8 KHz filter. With the K3's power set to 100 watts I'm seeing 66.3 watts output to

RE: [Elecraft] Low power out on 10M

Jim, There are 3 stages of RF amplification in the transmit chain between the W6 jumper and the LPF, you will have to refine the search a bit - right now, all I can say with certainty is that the problem lies between W6 and the LPF. I would suggest checking all the components in the base circuit

RE: [Elecraft] Low power out on 10M

I'm clueless but can offer an observation for you to laugh at and ignore. On 10 meters, -29.3 DBM yields 2.0 watts while -26.7 yields 5 watts. The change in drive level is about 3 dB which is twice the power so that looks like what I'd expect. On 20, the change is about 6 dB or 4x power and you

[Elecraft] Low power out on 10M

Yeah, I know this subject has been kicked around for a while, but none the less. When I built the K2, I had no trouble getting the 10W out on 10M. 1) I have rewound T2 and elevated it above the board 1/16 inch. 2) Band Power at W6 Measured output.