HDSDR CTL-SHIFT-G

Test tones in HDSDR

From Yahoo Softrock40 Group:-

77216Re: softrock40

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warrenallgyer
Mar 21, 2014
I couldn't wait to get home from a business trip and try out LC's apparently undocumented HDSDR test tones. This is an extremely useful capability and I have not seen it talked about. After some trial and error here is what I find.

The test tones are available in the AM/FM/LSB/USB modes. When in any of these modes, if you press CTL Shift G you will activate the tone generator. Subsequent presses of the same key combination will cycle you through 9 different tone/level combinations. I measured them by transmitting on an RXTX 80/40 and receiving the attenuated signal on an RXII/HDSDR and the spectrum analyzer. Here is the sequence that results from initial and subsequent combo presses:

1) Transmit on and 750 Hz at -20 dB from reference level
2) 750 Hz at -6 dB
3) 750 Hz at 0 (my arbitrary reference level, more below)
4) 750 Hz and 1750 Hz at -26 dB from reference
5) 750 Hz and 1750 Hz at -11 dB
6) 750 Hz and 1750 Hz at -6 dB
7) 750 Hz,1750 Hz, and 2350 Hz at -29 dB
8) 750 Hz,1750 Hz, and 2350 Hz at -14 dB
9) 750 Hz,1750 Hz, and 2350 Hz at -11 dB
10) Transmit off

The level measurements are probably + or - 1 dB and the tone frequencies were read out from the HDSDR spectrum display. It seems the intention was probably -20, -6, and 0 for each of the combinations.

In my first attempt to use the tones I went to #3 and raised the output level until the RF output just stopped increasing. This appears to be a good way to set the power levels for HDSDR for CW.

In my second attempt I went to #6 and adjusted the output power level slider to get my desired IMD3 level as read out on the RXII/HDSDR spectrum display. A great way to set the transmitter up for SSB. You just have to choose wisely on the desired IMD3 level: -24 dB by custom, with pretty good power and not so clean spurs, or -40 for clean as a whistle but relatively low power out.

Very very cool! An extremely useful tool for setting levels in HDSDR and for testing the RXTX transmit function.

Thank you LC!

PS: If you could find a way to make/break #3 from the RXTX paddles you would give us a GREAT CW transmitter. I'm just sayin'...........

Warren Allgyer
9V1TD

And LC's reply:-

Hello to Warren, Chris, Lee and everyone,

your measurent is quite good Warren. The exact amplitudes are:
1) amplitude = 0.1
2) amplitude = 0.5
3) amplitude = 0.99
4) amplitude = 0.5 * 0.1
5) amplitude = 0.5 * 0.5
6) amplitude = 0.5 * 0.99
7) amplitude = 0.33 * 0.1
8) amplitude = 0.33 * 0.5
9) amplitude = 0.33 * 0.99
what gives the levels  -20, -6, -0.1 ;  -26, -12, -6.1  and  -29.6, -15.7, -9.7 dB.
The factors 0.5 for 4-6 is to avoid oversteering with 2 tones. Factor 0.33 for 7-9 with 3 tones.

As Warren did, one should set 3) and reduce output power until having a clean output carrier. That is to avoid oversteering of output soundcard and amplifier ..

The 3 tones are chosen with 700, 1700 and 2300 Hz. This are the values in the code.
They are sort of prime, so that harmonics of lower tones don't interfere with higher tones.
I've no clue why you measure additional 50 Hz offset for each tone! But i did not test this for a long time!

Other "Easter Eggs"? Go, find them! ;-)

CW:-

I understand what you are "just sayin" with RXTX paddles. But! I have absolutely no possibility to do so!!! HDSDR itself has no way to talk to the SoftRock hardware directly. Only the ExtIO from Fred can communicate with the SoftRock .. and would need to pass the paddle's state to HDSDR. But the Si570 ExtIO does NOT pass any such information concerning paddles! That is, why it's impossible to do in HDSDR.
If you know, that CW paddles are utilized in Rocky or PowerSDR (i never tried), then you should talk with Fred Krom, the developer of the ExtIO.

I'll add a CW control over serial port. ADDED see here.

kind regards,
LC

Links made to Yahoo transferred to Groups.io
Intended to be temporary.....

Page1/1 Installing....
https://groups.yahoo.com/neo/groups/softrock40/conversations/topics/77034
https://groups.io/g/softrock40/topic/sending_cw_in_hdsdr/5645963?p=,,,20,0,0,0::Relevance,,Sending+CW+in+HDSDR+,20,2,0,5645963

In topic https://groups.yahoo.com/neo/groups/softrock40/conversations/messages/77054
Warren:- https://groups.io/g/softrock40/message/76119

https://groups.io/g/softrock40/topic/semi_breakin_cw_for/5646517?p=,,,20,0,0,0::Relevance,,Semi-breakin+CW+for+RXTX%2FHDSDR,20,2,0,5646517  = Topic
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https://groups.io/g/softrock40/message/79524

https://groups.yahoo.com/neo/groups/softrock40/files/HDSDR/
https://groups.io/g/softrock40/files/HDSDR

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I am also running Win 7 X64 and had the same problem on my newly-installed SDR#. To fix it, just go to the MS link at http://www.microsoft.com/en-us/download/confirmation.aspx?id=16083 and run the script to auto-install "European Union Expansion Font Update". It adds the Arial Regular font to your system quickly and at no cost. 8>)

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Installing Softrock Ensemble II and Rocky 3.6

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Not carried through:-

----- Original Message -----
Subject: Re: [softrock40] Peaberry using PowerSDR2.4.4 I/Q Reverse on TX only


> The following two paragraphs from from
> http://www.wb5rvz.com/sdr/ensemble/07_opamp.htm
>
> "In both the RX op amp and TX QSE sections, the jumper links on the
> I/Q input and outputs should ideally be fitted crossed over....

Dave,

Unfortunately in a list like this confusion reigns!
We get posts from those that understand and from those that think they understand.
At the time Robby wrote that, when the Ensemble was introduced, there was a LOT of confusion, some were convinced their soundcard
L/R was reversed from the normal standard. Perhaps it needs re-writing.

My Ensembles have TX crossed, RX straight.
I confirm that this works with all versions of PSDR and Rocky. I've just looked at Rocky, it is set Left/Right = Q/I which I presume
is the way it works. I have used PSK TX but not recently......
Right, seeing other comments.
Rocky 3.6 Correct.
Rocky 3.7 Correct.
PSDR has always been correct for all versions, from 1.9 to 2.4.
Correct means that it TXs on the same frequency as RX.

> provides compatibility with all versions of PowerSDR. For Rocky and
> Winrad it is necessary to use the 'swap IQ' functions in their set up.
> If you jumper them straight across fine for Rocky and Winrad, but you
> will not be able to use any version of PSDR. (Author wired for Rocky)"

In this configuration RX/TX will not be correct for PSDR or any software except those that have separate RX and TX switches.

> "Some builders (author included) have encountered issues in this setup
> and siscovered that the only the TX leads should be crossed, leaving
> the RX leads uncrossed. Be prepared to change these should you
> encounter this issue."

Robby got it right in the end. But some were not convinced.

>
> I own a SoftRock RXTX Ensemble and wiring them as per the first
> paragraph, with both crossed, left me in a situation where Rocky was
> impossible to set up.
Yes.

Making the change in the second paragraph allows
> use on Rocky, but PowerSDR was impossible.

TX crossed? Now this I do not understand. This is the correct way.

>
> I have tested many different applications with the Peaberry and would
> love a design that didn't require i/Q reversal. Unfortunately, this
> doesn't seem possible when two very popular applications appear in
> direct conflict with each other and are inflexible with their
> configuration.

David, if this is really true then surely there would have been something said in the 5 years I have been with this group?
I repeat, once the IQ is setup for PSDR then just the software switches on ALL other software is all that is required.

>
> To everyone who transmits with both PowerSDR and Rocky on a RXTX
> Ensemble: What versions are you using? How are your jumpers set up?
>

Let's hope we get some other input.....
Which seems just as confusing! I just do not understand how any extra crossovers are needed.

73 Alan G4ZFQ

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Ensemble or v6.3 RXTX PTT add on.pdf Add on PTT relay for Ensemble RXTX or v6.3 RXTX
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g8voip

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Files  GM3SBC QRO Modifications
Matching BS170 FETs.doc Matching method used for BS170 FETs  82 KB  ed.murphy31  Mar 5, 2013
QRO Modifications.doc Increasing the RF Output Power of the Ensemble RXTX.

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Radiation from the RX Ensemble II
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Lazy Man's Reprogrammer - well sort of     Brian


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