Using cw
into a dummy load with watt meter, I have verified calibration on the watt meter
20m on watt meter reads 4ish, on the (tr)usdx it reads 14ish watts and 99.99 efficiency
the efficiency moves around a little on 80m and 60m but still 98 99 % and pushing 14ish watts on the trusdx 7 or 8 watts on my meter
this started happening after I adjusted 20m for efficiency and out power
can some one help me figure this out
Thank you kl4lg
Power and efficiency reading very high, watt meter reading "normal"
-
- Posts: 5
- Joined: 02 Jan 2022, 19:43
-
- Posts: 35
- Joined: 18 Feb 2022, 22:49
Re: Power and efficiency reading very high, watt meter reading "normal"
Make sure that the wires on T1 and T2, are scraped and soldered properly.
Philip G7JUR
Philip G7JUR
-
- Posts: 712
- Joined: 30 Dec 2021, 19:18
- Contact:
Re: Power and efficiency reading very high, watt meter reading "normal"
You should not push the (tr)uSDX for 7-8W. It´s not designed to create so much power.
Probably you´re overloading the ATMega Inputs.
Please reduce input Voltage and check if it works with reduced Power.
Besides: Do the T2 Mod viewtopic.php?t=395
73 Manuel; DL2MAN
Probably you´re overloading the ATMega Inputs.
Please reduce input Voltage and check if it works with reduced Power.
Besides: Do the T2 Mod viewtopic.php?t=395
73 Manuel; DL2MAN
-
- Posts: 5
- Joined: 02 Jan 2022, 19:43
Re: Power and efficiency reading very high, watt meter reading "normal"
I reduced the voltage to 10 vdc and the (tr)usdx still reads way high with 99% but My watt meter read lower outputDL2MAN wrote: ↑16 Jun 2022, 23:39 You should not push the (tr)uSDX for 7-8W. It´s not designed to create so much power.
Probably you´re overloading the ATMega Inputs.
Please reduce input Voltage and check if it works with reduced Power.
Besides: Do the T2 Mod viewtopic.php?t=395
73 Manuel; DL2MAN
I have continuity back to the atmega from the antenna side of T1 and T2 on both the FWD and RVS I will look into the T2 mod
-
- Posts: 5
- Joined: 02 Jan 2022, 19:43
Re: Power and efficiency reading very high, watt meter reading "normal"
I made the T2 mod, and all bands are now making about over four watts so 4.2 to 4 @ 10.1 vdcPezzep wrote: ↑16 Jun 2022, 23:51I reduced the voltage to 10 vdc and the (tr)usdx still reads way high with 99% but My watt meter read lower outputDL2MAN wrote: ↑16 Jun 2022, 23:39 You should not push the (tr)uSDX for 7-8W. It´s not designed to create so much power.
Probably you´re overloading the ATMega Inputs.
Please reduce input Voltage and check if it works with reduced Power.
Besides: Do the T2 Mod viewtopic.php?t=395
73 Manuel; DL2MAN
I have continuity back to the atmega from the antenna side of T1 and T2 on both the FWD and RVS I will look into the T2 mod
except 20m meter which is sitting at 2 watts, this is according to my watt meter
the (tr)usdx is still reading 99% efficiency and 13.2ish watts on all bands
I have re soldered all the pads for T1 and T2
-
- Posts: 712
- Joined: 30 Dec 2021, 19:18
- Contact:
Re: Power and efficiency reading very high, watt meter reading "normal"
Then you have probably either played with RShunt Value in menu and/or not the right ratio on your Transformers. Please show a closeup picture of your both transformers.
73 Manuel DL2MAN
73 Manuel DL2MAN
-
- Posts: 11
- Joined: 09 Jan 2022, 21:35
Re: Power and efficiency reading very high, watt meter reading "normal"
DL2MAN wrote: ↑16 Jun 2022, 23:39 You should not push the (tr)uSDX for 7-8W. It´s not designed to create so much power.
Probably you´re overloading the ATMega Inputs.
Please reduce input Voltage and check if it works with reduced Power.
Besides: Do the T2 Mod viewtopic.php?t=395
73 Manuel; DL2MAN
I usually see values of more than 5W on the lower ends of a band when im runing 13.7V into it.
What should be the normal values?
-
- Posts: 5
- Joined: 02 Jan 2022, 19:43
Re: Power and efficiency reading very high, watt meter reading "normal"
Thank you for you help DL2MAN
I figured out the issue with the extremely high readings.
I was counting turns on the transformers(could not get a good picture with my digital camera) which checked out, so I reheated all the solder joints again, and this has fixed it.
I really appreciate your time and efforts when I get some spare coins I will send them your guys way
Thank you 73
Kl4lG
I figured out the issue with the extremely high readings.
I was counting turns on the transformers(could not get a good picture with my digital camera) which checked out, so I reheated all the solder joints again, and this has fixed it.
I really appreciate your time and efforts when I get some spare coins I will send them your guys way
Thank you 73
Kl4lG
-
- Posts: 32
- Joined: 30 Dec 2021, 21:47
- Contact:
Re: Power and efficiency reading very high, watt meter reading "normal"
How should the RShunt parameter be adjusted?
73!
Costin, YO8RCD
Costin, YO8RCD
Users browsing this forum: No registered users and 0 guests