[Release] RT-900 nicFW900 4.00.05 B

You shouldn't be getting anything out with a tx power setting of 20, have you not lowered the bottom clamp to 2 before testing?

Marcus Dudley

My findings (4.00.04) are as follows: VHF (2m): TX Power. PA1. PA2. Power Out 20 7 7 3,1 W 255. 7. 7. 8,5 W 182 7 7 5W UHF (70cm): 130 7 7 0,12W 255 7 7 7,8W I tried out to find the useable minimum and maximum. So most likely, you can adjust the Power Out by the setting of "TX Power", when you leave PA1 and PA2 at "7".

Frank

Die Variante von Scott hat bei mir auch funktioniert. Danke für die Info

Rainer Heisser

Might need a different strategy.

Marcus Dudley

See scott Stones post below, I had same issue

Stacy Poteet

I had the same issue. Use the v04 SPI app and write the default Calibration or if you have a saved one, write that one. Open the new v05 SPI app and select the Calibration tab and read the settings. Now you can write the settings back. That is what I did to get it to work correctly. From there, you can start editing the new values from the app or the radio.

Scott Stone

I dont know what happened but i cant tx. What is N/T meaning?

Marcin G

Well guess I miss something, back to drawing board. I have N/T no transmit of due Cal on meter and dummy load. Any suggestion?

Stacy Poteet

Looks like PA Gain 1 is ment to stabilize Min Watts and PA Gain 2 is to stabilize Max Watts. They just don't seem to play well with each other.

Scott Stone

Ok I think I might be getting somewhere. I used my settings from the RT-900 Adjust RF Parametes v1.2 to set the following settings in nicFW Band for testing - 465mhz for testing with 462.55000 Max TX - 228 This is the High Average Min TX - 152 This is the Low Average Min Watts - 0.5 Max Watts - 7.3 (This is the max I was getting on previous versions after normal calibration) Now testing the PA Gain 1 and PA Gain 2 is where things get interesting. If I start with just adjusting PA Gain 1 (my setting is 2), I get a very steady low wattage read out on my meter of 0.5 which is what I have set for my Min Watts. The issue is that the Max Watts is all over the place from 6.8 to 8.9 and I never get a steady power readout on my meter. I started adjusting the PA Gain 2 (setting of 6) and this corrected the Max Watts from fluctuating and was outputting a steady 7.3 watts. BUT, the Min Watts started fluctuating now. I tried all combinations of PA Gain 1 and 2, but can not get the Min and Max Watts to both output at a steady reading. So with PA Gain 1 = 2 PA Gain 2 = 0, I get perfect Min Watts outputting correctly at 0.5 Watts but Max Watts fluctuating. With Pa Gain 1 = 2 PA Gain 2 = 6, I get perfect Max Watts outputting correctly at 7.3 Watts but min watts Fluctuating. I tried adjusting the Max TX/Min TX and Max Watts/Min Watts to correct the fluctuation, but no luck. It looks like the PA gain settings might be fighting each other.

Scott Stone

Well to start off based on your statement you are trying to flash a firmware made for the Radtel 900 on the Tidradio H3 (and that won't work regardless of how many times you change the USB port) If you have the H3 and you already flashed the 52_13 version then you have the latest one. This firmware is available for 3 different radios so pick wisely. (The radio model that the firmware is designated for is in the file name)

RedJohn

Selman Kapusuz

Since this has been brought up I would also like to bring the H3 In the mix. I am also curious in Marcus opinion between the H3, 890 and 900. Which do you think is the best of both worlds, in terms of speed/hardware and receiving/transmitting quality?

RedJohn

Well done sir! Now that you've played with it for a while, how do you feel the RT-900 compares against the RT-890 in terms of radio capability and quality.

Kelvin Hill