Search found 40 matches

by w3ub
Mon Jan 04, 2021 1:32 pm
Forum: Thetis
Topic: Thetis Diversity Display
Replies: 4
Views: 239

Re: Thetis Diversity Display

My experience with diversity: when turning on diversity, both receivers are activated and combined into the RX1 display and demodulator. Just like using an external amplitude and phasing unit. But, you can enable RX 2 and view the second receiver, and also independently demodulate with it. In my cas...
by w3ub
Thu Dec 31, 2020 1:31 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

Just wanted to add one thing before I forgot ... I don't think this problem is a fundamental problem with speed/timing, it occurs (for me) only during a transition, either from RX to TX, or more easily reproduced during the transition from diversity on to off, or, or during the transition from off t...
by w3ub
Mon Dec 28, 2020 7:53 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

That is sort of what I figured regarding the stitched receivers. Went back and tried PowerSDR ... have not used it for a few years. Seems like a major step backwards now, but at the time it seemed great! Not going to go down that route. For now I think I will use non-coherent diversity with RX2 audi...
by w3ub
Mon Dec 28, 2020 5:06 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

Got it. That is too bad ...

For my own information, what is a stitched receiver?

Doug
by w3ub
Mon Dec 28, 2020 4:13 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

Since Thetis works with P1, and diversity is quite stable if I run P1 (and Thetis), I thought that you were saying if I disabled PS, I could get to 384k using P1 and Thetis. If that makes sense ... The problem only occurs with P2 and Thetis.
Doug
by w3ub
Mon Dec 28, 2020 3:28 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

It is odd, if I start Thetis without starting the receiver, I see other sample rates to choose including 384k. But the moment I start the receiver (with the start/power button) it changed to 192k and that is the max rate available ... with P1 FW. I have tried to turn off PS, maybe it is still on som...
by w3ub
Mon Dec 28, 2020 12:55 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

[quote]You can run 384K in PowerSDR with PureSignal disabled. There's no magic "sensitization". It's a bug in the P2 firmware, possibly related to marginal timing closure in the firmware design. [quote] I reverted back to P1, and with PS-A not checked the max sample rate available is still...
by w3ub
Sun Dec 27, 2020 10:52 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

It's odd for sure. It seems like the additional load of running diversity somehow affects stability. I started running diversity quite a bit, for hours at a time, and found this occasional instability. After playing with it I found that toggling it on and off repeatedly helps to make it recur faster...
by w3ub
Sun Dec 27, 2020 10:29 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

Re: P2 Coherent Diversity Issue

A new black 7000.
Yes, I have to cycle things to get it working again.
Doug
by w3ub
Sun Dec 27, 2020 3:18 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: P2 Coherent Diversity Issue
Replies: 17
Views: 591

P2 Coherent Diversity Issue

Thetis 2.8.11 Have tried P2 FW from V1.2 to V2.0b On 80m I have a local broadband noise source, that coherent diversity can null by about 10 dB, which can make quite a difference. I usually run RX1 and RX2 on CTUN, using a 384k sample rate. It works well except for this issue. If I click diversity o...
by w3ub
Fri Dec 18, 2020 5:45 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: Slave RX1 and RX2 AF?
Replies: 4
Views: 207

Re: Slave RX1 and RX2 AF?

Yes, but I missed that little detail ... although it makes perfect sense.

Thanks again,
Doug
by w3ub
Fri Dec 18, 2020 4:28 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: Slave RX1 and RX2 AF?
Replies: 4
Views: 207

Re: Slave RX1 and RX2 AF?

Aaaaha ... I think I got it, which makes sense.

So, just to be clear, when using diversity with RX1 as reference, there is no need to even enable VAC on RX2 or use the RX2 audio in any way. Right?

Thanks!
Doug
by w3ub
Thu Dec 17, 2020 10:59 pm
Forum: Diversity Operations (PowerSDR & Thetis)
Topic: Slave RX1 and RX2 AF?
Replies: 4
Views: 207

Slave RX1 and RX2 AF?

Hi,

When using diversity and tuned to the same frequency, is there some way to slave the AF levels of RX1 and RX2 together to one control?

/Doug
by w3ub
Wed Dec 16, 2020 7:09 pm
Forum: Keys, Keyers, Paddles & Bugs
Topic: CW Sidetone
Replies: 2
Views: 217

Re: CW Sidetone

OK, got it. Thought I was missing something there for a second ...

It seems like setting the QSK delay to 300msec or so is equivalent to the semi-break in mode.

Doug
by w3ub
Wed Dec 16, 2020 3:03 pm
Forum: Keys, Keyers, Paddles & Bugs
Topic: CW Sidetone
Replies: 2
Views: 217

CW Sidetone

This is the first time I am trying CW with my 7000DLE. Thetis 2.8.11, P2 Using VAC Using MPR40 to send CW via a Com port DUP enabled When using semi-break in, I can't get any sidetone (or received version of the TX signal). When using QSK I can get the sidetone, or perhaps more accurately I am heari...
by w3ub
Wed Dec 16, 2020 1:41 pm
Forum: Thetis
Topic: Thetis display data
Replies: 4
Views: 424

Re: Thetis display data

I guess I was referring to my display, which has PS-A enabled, the data to the left, it seems to be related to the cursor position and displays absolute frequency, absolute level, and offset. I would prefer to have it disabled myself.
/Doug
by w3ub
Sun Dec 13, 2020 1:25 pm
Forum: Thetis
Topic: Thetis display data
Replies: 4
Views: 424

Re: Thetis display data

I believe the data represents the value of frequency offset from the center of the display, and absolute amplitude or time depending on where your cursor is. It is not useful to me, but I guess it is to some. I wish you could disable it.

/Doug
by w3ub
Thu Nov 26, 2020 6:31 pm
Forum: Thetis
Topic: Thetis 2.8.11 Released!
Replies: 228
Views: 29441

Re: Thetis 2.8.11 Released!

Here is a good reference from the Flex Radio guys on Ethernet properties that helped me.

https://helpdesk.flexradio.com/hc/en-us ... erformance

/Doug
by w3ub
Fri Nov 20, 2020 6:13 pm
Forum: Thetis
Topic: What client software are YOU using ??
Replies: 7
Views: 577

Re: What client software are YOU using ??

I also use Thetis. In addition to the points already made, a big reason for me is that is where most of the effort is being made in terms of bug fixing and improvements, that specifically target the Anan series of radios.

/Doug
by w3ub
Tue Nov 17, 2020 2:52 pm
Forum: Thetis
Topic: Thetis 2.8.11 Released!
Replies: 228
Views: 29441

Re: Thetis 2.8.11 Released!

Got it. Seems like this might also be useful if you are having a lot of sequence errors when PS-A is running. I have tried all of the FW, and I think the GB Ethernet interface is marginal in terms of timing and stability. Two of the FW version work, sort of OK, but if I run a net for an hour toward ...
by w3ub
Tue Nov 17, 2020 12:51 pm
Forum: Thetis
Topic: Changing code for features you want
Replies: 9
Views: 580

Re: Changing code for features you want

I would like to also see much lower steps in RIT, if you get it working well, including via MIDI it would be great to get that checked into the released code base.

Thanks for trying it.

Doug
by w3ub
Tue Nov 17, 2020 12:50 pm
Forum: Thetis
Topic: Thetis 2.8.11 Released!
Replies: 228
Views: 29441

Re: Thetis 2.8.11 Released!

If you perform a single cal, does the system use that static calibration and apply fixed predistortion? Or does it not apply any predistortion afterwards?

Doug
by w3ub
Thu Nov 05, 2020 1:16 pm
Forum: MIDI Controllers (PowerSDR & Thetis)
Topic: Slowing Wheel Tuning Speed
Replies: 8
Views: 576

Re: Slowing Wheel Tuning Speed

Well, I guess I finally got it. If (and only if) you have the wheel speed toggled, then (and only then) does the Min/Max steps come into play. Very nice, just not intuitive on the setup, but works great.

Thanks again,
/Doug
by w3ub
Thu Nov 05, 2020 1:13 pm
Forum: MIDI Controllers (PowerSDR & Thetis)
Topic: Slowing Wheel Tuning Speed
Replies: 8
Views: 576

Re: Slowing Wheel Tuning Speed

Ahhhh! Got it. I don't think I ever scrolled down so far and noticed all of those options at the bottom.
I would still like to understand (the engineer in me) why the MIDI updates/step control does not seem to affect things.

Thanks!
/Doug
by w3ub
Wed Nov 04, 2020 1:54 pm
Forum: MIDI Controllers (PowerSDR & Thetis)
Topic: Slowing Wheel Tuning Speed
Replies: 8
Views: 576

Re: Slowing Wheel Tuning Speed

Thanks Scott, When you get back please share your methods of controlling the wheel speed. Perhaps I don't quite get the Min/Max options, but they don't seem to work for me. I would be interested to understand the MIDI commands that might also impact this. I have been testing it with a fixed 500 Hz s...
by w3ub
Tue Nov 03, 2020 8:33 pm
Forum: MIDI Controllers (PowerSDR & Thetis)
Topic: Slowing Wheel Tuning Speed
Replies: 8
Views: 576

Slowing Wheel Tuning Speed

Using an Anan-7000 DLE Mk II, Thetis 2.8.11, Hercules DJControl Compact. I have the main VFO tuning on the left wheel, but want to slow down how fast the frequency changes. The MIDI Wheel updates/step min and max settings seem to have no impact. Is there some other way to accomplish this? Thanks, /D...
by w3ub
Wed Oct 28, 2020 1:08 pm
Forum: Thetis
Topic: Changing Voltmeter
Replies: 8
Views: 955

Re: Changing Voltmeter

Sounds like the voltage measurement needs some additional averaging before being displayed for sure.
/Doug
by w3ub
Tue Sep 08, 2020 9:02 pm
Forum: Apache Labs News
Topic: ANAN-6000DLE
Replies: 11
Views: 3456

Re: ANAN-6000DLE

Curious as to how the 6000 is progressing, I like the option of a lower power version that can drive an amp. Not sure I would implement HV finals. I understand the better IMD performance, not sure it is worth the added cost and complexity of an additional HV supply, particularly at these power level...
by w3ub
Mon Nov 18, 2019 10:46 pm
Forum: Thetis
Topic: Minor Feature Request
Replies: 0
Views: 1076

Minor Feature Request

Hi, I know this has been broached before, but I would love it if the capability of the RX2 AF gain control would "assume" the AF gain control of the RX1 sub-receiver, if RX2 is not enabled. You can still leave the two Volume controls at the bottom beside the MultiRX button, just make the R...
by w3ub
Thu Aug 01, 2019 12:38 pm
Forum: PureSignal Operations (PowerSDR & Thetis)
Topic: Anan 7000dle and pure signal setting
Replies: 12
Views: 7123

Re: Anan 7000dle and pure signal setting

Yes, you must reduce power for sure. I don't think the recalibration to lower powers will change the linearity, it is just the TX chain gain you are lowering.

The only problem with an external attenuator is how to remove it from the RX path, assuming you put one in line with the amp input.

Doug

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