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Is there a way to attenuate incoming signal or have some kind of RF gain
control with my Softrock RX ensemble II?

Eduardo,

You should not need one. The lower bands on an Ensemble should already have attenuation. A Softrock normally handles strong signals well.
If you have a strong local station then maybe a filter? Of course an external switched attenuator could be tried.


73 Alan G4ZFQ

Greetings;

Is there a way to attenuate incoming signal or have some kind of RF gain
control with my Softrock RX ensemble II?



73

Eduardo

Hi Guy,

Built RX Handy receiver boards for the 80m/40m band group, (4MHz-8MHz), are available on the Fivedash.com website. Multiple receiver boards are in stock for next business day mailing.

If you are wanting a less expensive copy, one built on a reclaimed receiver board, I will look into my past projects box to see if I can find another receiver board to reclaim.

Regards,
Tony, kb9yig

Is this plastic? I prefer a metal box, for several reasons.

73, Zack W9SZ

There is a 3D printed design at:

Sadly, no images of the actual box were preserved under Archive.org records.
Link


I think the solution will be buying a case and adapt the board best I can.

On Wed, Feb 16, 2022, 9:09 AM Zack Widup <w9sz.zack@...> wrote:

KM5H used to supply a case for the Ensemble II. However, it appears his
website is gone.

Search for the website on archive.org. There's a good chance you'll at
least see photos of it.

Mike
W0BTU

KM5H used to supply a case for the Ensemble II. However, it appears his
website is gone. I don't know if anyone has a few saved up somewhere or not.

I made my own using an aluminum box. I forget the supplier or the part
number of the box, but the Ensemble II fit it perfectly. It just involves
some work drilling and cutting the holes to allow access for the various
ports. I used a nibbling tool to cut the rectangular holes.

73. Zack W9SZ

I am still actively playing with an designing things with the soft rocks. I would be interested in obtaining one of your new handy receivers Tony!
Guy

--
guy (at) eastroad (dot) org

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N1GMM

Have a good day!

New to the group, greetings to all.

I now own a softrock rx ensemble 2 and would like to know if anyone here
could point me to where to buy casing for the receiver. I would like to keep
it inside a proper case. Any suggestions or leads?

Thank you in advance.

Good Morning All,

Fivedash has a built SDR receiver offered for sale that is based on the HF RX II receiver. This built receiver board, called the RX Handy, covers a single range such as 4 MHz to 8 MHz for 80m and 40m band coverage. (Other ranges are possible, even 630m.) The RX Handy receiver is a simplified HF RX II receiver circuit design and doesn't require a 12 VDC power supply for operation since all circuits on the RX Handy are powered by the 5 VDC provided in the USB cable plugged into the board. Cables plugged into the RX Handy receiver for normal operation are just the USB plug, the stereo audio output plug and the BNC antenna. The down side of powering the RX Handy from the USB 5 VDC is more center frequency noise, about 3 kHz on each side of the center frequency.

The built RX Handy receiver board is a useful HF receiver for casual operation, I typically have on playing every morning as I work on various projects. The various 40m SSB nets make for easy and often interesting listening as I work prior to breakfast. Several who have tried the RX Handy receiver have spoken well of it.

This week's project was to take a several year old partially built 6m/2m receiver prototype board, strip off the unused components and build an RD Handy receiver on the board. The old receiver board is the same size as the RX II board and is now playing nicely on 40m. If anyone would be interested in trying an RX Handy receiver, this salvaged receiver is available for $20 post paid to a US customer. Just contact me directly by e-mail.

Best regards to all,
Tony, kb9yig

I'm parting with the broadcast band stop filter I made last year.? Photos:



I used this with the Softrock successfully to cut out interference on both LF and HF.? BNC connectors.? Approx 500- 1700 Khz (+/-10%).

$60 shipped, PP ok.

Thanks.? Please contact off list.

best offer

Hi, I have the LF version of the Ensemble RXII for sale for $60 shipped insured CONUS, Paypal ok. Tony built. I have hardly used it. Please contact offlist. Photos:



Thank you.

Am I missing how to alter the I & Q signals with the PowerSDR software? I checked all settings, don't see it.

Al

I seem to remember we had to set the jumpers to suit PSDR then use "swap" if required with other software.

73 Alan G4ZFQ

A number of SDR softwares that run my Ensemble like Winrad , HDSDR and Rocky you can reverse I & Q signals, etc. But you can't do it on Flex PowerSDR software which also runs my Ensemble.
Am I missing how to alter the I & Q signals with the PowerSDR software? I checked all settings, don't see it.

Al

So you have the I & Q signals that are at audio frequencies (about what frequencies are they) . . . going into your PC soundcards.

That is for Softrocks, "audio" frequencies up to +/-96KHz depending on the soundcard used as an ADC.
But more modern SDRs send data streams maybe representing a spectrum of 30MHz or more.

I guess that the SDR software uses programming language to do this,

The choice is the writer's. There is no dedicated language.

Best of luck:-) I've never got past just a basic outline of what is involved.

73 Alan G4ZFQ

In the group, Ricardo Suarez was kind enough to send me this link, looks like it has much info.



Al

Let's see if I got this correct . . .

So you have the I & Q signals that are at audio frequencies (about what frequencies are they) . . . going into your PC soundcards.

Once this gets into your PC via the soundcards . . . it gets changed ( detected ) into "usable" content via the SDR software.

I guess that the SDR software uses programming language to do this, does anybody know what programming language?

I know alittle about Python, is it a common language or something new & special for this function, acting as a detector? If it is new language, what is it called?

Does anybody know of a website that explains this all . . . in depth.

Thanks

Yes usb becomes lsb if connections are reversed reversed. This can be fixed in most software (qi or iq) or reverse the hardware connections.

--
Thanks Steve M0ZEH