Hi Alan,

it's all about dynamic range. 80m bandnoise usually is about -120dB fullscale, input noise of the Anan's somewhere at -150dB FS.

You have to make sure that your audio chain and the used spectrum app supports HDR. 16bit resolution is definitly not enought (only 96dB), you need at least 24 ...

Hi Robert,

the SMA XVTR output is for max. 0.5W only.

If you need more you have to use the internal PA on one of the three ANT x BNC's.

Use the setting below for PA activation:

5W XVTR.png

Don't forget to calibrate PA Gain for maximum allowed input of transverter:

XVTR PA CAL.png


greets ...

Just edit the database with a text editor. Thetis must be closed!
Search for "BandText".
At the second occurance you will find a chained list of frequencies.
Insert your definition at the right position and adapt the "High" value of the previous entry and the "Low" value of the succeeding one ...

Just calibrate your panadapter!

The value is roughly the attenuation of your coupler, maybe you have to adjust a few dB.
Scale the tx-display and make sure DUP is enabled.

n2gq wrote: Hi
Would -43 ok for a lev calibration?

Jay n2gq

-43dBm (S9+30) should be sufficient.
-20dBm(S9+53) would be still better since at least15bits of the 16bit ADC are used.

Walter dl2xy

Your values reflect exactly the IARU recommandations for S-meters:

HF: S9 = 50µV = -73dBm
VHF: S9= 5µV = -93dBm

So everthing is perfectly fine.

Walter
DL2XY

An OC is simply a switch towards ground if activated.
There is no intrinsic pull up.
If you want to switch inductive loads (Relay coil) it is mandantory to use the COM pin for freewheeling.

Dear friends,
Is it possible to turn off AGC altogether in Thetis? I do EME and it is useful to measure signal levels at audio where AGC just gets in the way. Note: I'm not asking about turning off "auto AGC gain mode" (which is so redundant.)
Thanks,
W9IP

You want to set the AGC mode to "Fixd"

Maybe you want to try this workaround:
WDSP.DLL with reduced FM demodulator AF output by 12dB.

wdsp.zip
That's very cool, Walter, thank you! But -12dB is a bit too much. Would you mind creating a patch version with -6dB, please? I assume (hope) that this is x64, right?

Yes, its x64. If someone ...

Maybe you want to try this workaround:
WDSP.DLL with reduced FM demodulator AF output by 12dB.

Or you may try to patch the database directly.
Setting the values to zero would reset the calibration.

. By default Thetis reports about 7dBm in excess, ( a calibrated -73 turns into -66 dBm.)

Do not calibrate at -73dB !
This is an ADC-System, ADC's need to be calibrated near fullscale. -20dBm should be fine.

Calibrating at S9 means 1/1000 of fullscale voltage, so the software must extrapolate by ...

VLAN would not help at all since all traffic would still be in the physical network.
The golden way ist to use a dedicated NIC with direct connection to ANAN. (detach all protocolls and services but IP-V4 from it)

Has anybody interfaced the MFJ-998 Auto Tuner with an ANAN radio to band follow or especially being able to bypass the amp with the tune function while causing the transceiver to put out a tune signal?

I can't find any data on the MFJ-998 pin out or data function to push the tune button and cause ...

Looks reasonable, mine is 5.6 Ohm.

Against better knowlage i had a try on video codec.
This is not what i want to look at!
Even at 25mbit/s (4 times the IQ-stream) the quality is not acceptable.

(Please explore the screenshots at 100% resolution)



Correction
That was a scaling problem. The capture app had scaled 1280x1024 to ...

Video streaming is a little bit of problematic. An uncompressed screen of 1280x1024 pixel at 60 frames per second would take a bandwith of 1.887 Gbit/s.
.
The 192ks/s IQ stream need only 6.144 Mbit/s, no problem in the age of FTTH-Internet. It contains all infomation needed for Panadapter and ...

w-u-2-o wrote:... Finally add some means to transmit spectral display information from Thetis for the client to render.

It's already there !

Ok, i see...

And the 720 lines of "txtVFOAFreq_LostFocus"...

Hope i never have to work on this part.

...
If you want to change frequency today, you convert the frequency you want in Hz from an integer to an ASCII string, copy that string into a text box on the UI then call its "lost focus" method. That can't be right! Some stuff is in UI methods; some is in properties; some is in-line coded ...

Minimum AM carrier is 0.25W at drive level 1.

If you need really small signal levels (0dBm) you may use XVTR output and disable the internal PA.

73 Walter

I have a 7000DLE blue face and it was down on power on 12 meters when it left the factory. I sent it to Doug and he put the correct parts in the LPF and sent it back to me.
Some units left the factory with wrong parts in the LPF.
It is now putting out full power on 12 meters.
Don W9BHI

Which ...

elan wrote:hi
any recommendation on Gigabit Ethernet switch tp link ?
or any other
thank you elan ea5iwt/g0uut

Recommendation is none.
Instead use a 2nd NIC for direct connention to radio.

greets Walter

The PA calibration is per radio model. You can have both radios (must be different models) in one database.

The more elegant way is to have distinct databases for each radio (can be same models, must have distinct fixed IP's) and use -datapath option in command line.
This way you can even use them ...

Yes,

just enable AI.

I dont need a 2nd slider for TUNE/2TONE.

I always tune my antennas with less then 1W (fixed TUNE power) and auto diabled xPA so i have no problems with high SWR during tuning.
After that i use 2TONE at normal drive level and auto enabled xPA to "calibrate" pure signal.

But limiting normal drive ...

I have done some testing, and the vitrualbox 3d driver (which is experimental) is ok with the vector/line stuff, but is failing with the bitmap creation used for the waterfall. It might be because I use a premultiplied alpha, not sure. Another issue is that using the directX debug flags also cause ...

Regarding VAC issues (Buffer misses) and maybe sequence errors in latest 21k9.

After running 21k9 for a longer time I experienced a distinct higher number of VAC warnings and seldom sequence errors.
The probability is about one to two events an hour on my system, but i heard from other OM's with ...

ramdor wrote:@DL2XY yes, unfortunately the Performance counter is using the processname as the filter so not unique with multiple copies running. To get around that problem could try renaming the exe, for 2nd instance testing I guess.

Yep, works!

Just compared x86 and x64 versions:

They use nearly exactly the same processor time.

But there is a pitfall: If you have both instances started (but only one active at a time) the load display of the active one is false !
Here it shows 5% for real 20% measured with ProcessExplorer.
I think both ...