Date   

Re: Need help receiving two freqs at the same time

Otso Ylönen
 

Hi,
 
Please go to Setup -> Audio and tick two (or more) of the virtual receiver outputs (VRX1, VRX2). Then, select the approppriate sound cards from the related drop-boxes. If you need to route the audio to another Windows application, you probably need to install the so-called Virtual Audio Cable (a separate app), which acts as a sw-based audio card. This will be visible in the drop-down selection as well.
 
After this, when you activate the virtual receivers (colourful buttons labelled RX1, RX2,...), you should get audio out to the selected cards. Please note that the Vol2 sliders in the main control panel can be used to change thoutput volume individually for each of the four channels.
 
Hope this helps!
 
BR, Otso
Gesendet: Freitag, 04. März 2016 um 17:10 Uhr
Von: "vlfstatic@... [elad_sdr_en]"
An: elad_sdr_en@...
Betreff: [elad_sdr_en] Need help receiving two freqs at the same time
 

Hello,

I'm trying to set up the S2 software for my fdm-s2 to receive two different freqs at the same time and port the audio to two different soundcards... one card for one freq, one card for the other freq.

I've looked at the pdf manual, but seem to be having difficulty making this happen.

Can someone give me a simple explanation of what to do to set up the software? I assume this is something the software is able to do.

Thanks.

 

 


Need help receiving two freqs at the same time

Ken B
 

Hello,

I'm trying to set up the S2 software for my fdm-s2 to receive two different freqs at the same time and port the audio to two different soundcards... one card for one freq, one card for the other freq.

I've looked at the pdf manual, but seem to be having difficulty making this happen.

Can someone give me a simple explanation of what to do to set up the software? I assume this is something the software is able to do.

Thanks.



Re: OT: Computer case with good EMI/RFI protection

the_shamen@...
 

Quote
"I do not think the case, itself, is important. They are mostly made of aluminum frames and some
plastic parts for aesthetics - usually the front is plastic and the rest aluminum. The case is what it is. 

I beg to differ... The case is "the most" single important part.
How possibly can a cheap low metal content case with plastic front and plastic apertures
compete with a completely metal case, with just cut-outs just the size of any connectors.

Fan-less solid metal is the way to go if you want to minimise locally generated noise.



Re: OT: Computer case with good EMI/RFI protection

jrichards@...
 

I do not think the case, itself, is important. They are mostly made of aluminum frames and some plastic parts for aesthetics - usually the front is plastic and the rest aluminum. The case is what it is.

The issue is, therefore, the components you place in side the case. Poorly shielded and poorly filtered power supplies are the usual main suspect, with other components, ranging from poorly shielded memory chips, graphics cards, and other add on boards. Internal-on-board sound cards (those which are built onto the motherboard) are historically badly implemented and pick up noise - usually for the want of a $2 shield on some nearby component.

Lately, more and more component manufacturers are taking care of EMI and RFI in their components - this is driven by fussy gaming enthusiasts and the application of the PC and MAC to music and video production. Most high quality components are properly designed and shielded. Nevertheless, I use high quality internal add-on sound cards or outboard USB or Firewire based sound cards which work better for many reasons - usually having better specifications and better EMI and RFI shielding. For example, my ASUS Xonar-DSX add-on sound card is superior in all respects to the sound card built into my ASUS motherboard. Still, most on-board sound cards are adequate these days and much better (quieter) than previous iterations.

Thus, the key to avoiding EMI and RFI in the shack caused by or emanating from your computer is to buy good, well made components. Get a warranty or promise from the vendor that you can return any components which prove problematic. Carefully test each component as you add it to the mix, so you can reliably isolate it from the rest of the pool of possible suspects. Doing this after you have the whole box assembled is much more difficult.

Then buy good cables - don't skimp on junk cables - and make sure everything is properly plugged in. Take care where you place the fully assembled box - i.e., if you have a choice, place it away from the rig. I have mine at one end of the desk, and the radios at the other, just because. Look for components which are specifically described as having low EMI and RFI emissions.

Therefore, I do not think it is the case, the the quality and character of the components you select that matter most. (I have been building computers for quietly working speech recognition software, having been a beta tester for several software companies, since 1992 - this sort of thing is of paramount importance to us fussy "dictators.")


Happy Trails -
------------------- K8JHR ----------------


---In elad_sdr_en@..., <kg.bergendahl@...> wrote :

Hi all,
I will build a new computer shortly so that SW2 can run smoother than on today's laptop. I have looked for an ATX tower case designed with EMI/RFI in mind but don't find any. I have even contacted one manufactuer and had the answer that, No, Our cases are not designed for low EMI/RFI emission. Sigh... So, what do I do? I ask all of you! Have anyone of you out there any experience on this subject? Anyone who knows of an ATX Tower Case that is OK for a radio amateur? Am I exagerating the problem?
73 / Kjell-Göran SM4GRP


Re: S-Meter FDM_SW2

Brent Mcl
 

Just my opinion i would have like it the normal way or the way all my Ham radios are or at lest the ones i have owned i have no overly strong signals here on the island  so the attn is of no uses here or i have not found any time in the last year of owning the FDM-S1 were it did any thing ...


Re: Bug in FDM-DUO firmware ? AutoNotch

Alberto I2PHD
 

On 3/4/2016 9:05 AM, davo@... [elad_sdr_en] wrote:

Buon Giorno Alberto,

the bug with the muting of the audio appears in the same way here. You switch on the radio with AN off.
After a certain time you select AN1. Then it can be that it is OK or the audio is muted, like you see it in the
video of Roar.
The distortion is easier...you switch on the radio with AN1 already activated and wait (with debugger in the backgraound,hi).

If I find a way to reproduce I give you a hint.

Buon giorno,

�� and thanks for this additional report. Now I just have to understand why I have never noticed it...
Ok, I wrote that down in my to-do list...

--
73 Alberto I2PHD
Credo Ut Intelligam



Re: Bug in FDM-DUO firmware ? AutoNotch

Daniel Vogel
 

Buon Giorno Alberto,

the bug with the muting of the audio appears in the same way here. You switch on the radio with AN off.
After a certain time you select AN1. Then it can be that it is OK or the audio is muted, like you see it in the
video of Roar.
The distortion is easier...you switch on the radio with AN1 already activated and wait (with debugger in the backgraound,hi).

If I find a way to reproduce I give you a hint.

Ciao es 73 de DL5TX


Re: S-Meter FDM_SW2

Tony_AD0VC
 

They could have done it that way, but then you would have to mentally correct the S-meter to account for the presence of the attenuator. The software makes the correction for you so that all of your readings remain correct whether the attenuator is in or out. After all, you want to report on the actual signal level being received by the antenna.

Tony



To: elad_sdr_en@...
From: elad_sdr_en@...
Date: Thu, 3 Mar 2016 15:40:33 -0800
Subject: RE: [elad_sdr_en] Re: S-Meter FDM_SW2

 
Well as for the attenuator It is nothing like any i have used before with my hf radios the attn i use i can see and hear a steady drop in back ground noises as with my orion i have three setting 6db,12db,18db, my Afedri also works the same ...Any ways thank you for reply learn something new every day .........


Re: S-Meter FDM_SW2

Brent Mcl
 

Well as for the attenuator It is nothing like any i have used before with my hf radios the attn i use i can see and hear a steady drop in back ground noises as with my orion i have three setting 6db,12db,18db, my Afedri also works the same ...Any ways thank you for reply learn something new every day .........


Re: Bug in FDM-DUO firmware ? AutoNotch

Alberto I2PHD
 

On 3/3/2016 11:47 PM, davo@... [elad_sdr_en] wrote:

After a not specified time (sometimes 20-30 minutes) the audio suddenly becomes VERY loud and distorted.

Hmmmm... a bug that manifests itself only after 20-30 minutes is indeed a very nasty one, and difficult to catch...
must be some runaway in the dynamically computed� h� coefficients that implements the LMS algorithm...
next week I will give a look to this possibility .


--
73 Alberto I2PHD
Credo Ut Intelligam


Re: Bug in FDM-DUO firmware ? AutoNotch

Daniel Vogel
 

Hello Alberto,

I can confirm the issue with the AN in standalone mode. The radio is completly muted like seen in the video from Roar.(See also my post a few weeks ago).
The distortion you can generate if you switch on AN1, set the audio level around 20, then switch the radio off and on and wait. After a not specified time (sometimes 20-30 minutes) the audio suddenly becomes VERY loud and distorted. Sometimes you can hear only "white noise" until it synchronizes again after some seconds. After that it works again normally.
Not so easy to find this bug, hi.

Ciao es MNI 73 to all from Daniel, DL5TX

Btw.: The DUO is a super radio!


SW2 and Omni-Rig

Ron W3ZV
 

I am attempting to get CAT control of the S-2. I am attempting to load Omni-Rig to accomplish this. When I try to install the software, the progress bar begins to move across the screen. At about 50%, the install just disappears. Nothing is installed. Windows 10 on an I5 machinge. Any hints?
--
Ron W3ZV


Re: OT: Computer case with good EMI/RFI protection

mid_265_266@...
 

Hi Kjell-Göran

If you got the room for it, why not use a IPC (Industrial PC) chassis. They are often used in the marine business where they have to be type approved and pass the IEC 60945 standard (which is a quite stringent environmental standard for marine navigation and communication equipment). I think i have one or two 4U 19" chassis, send me a e-mail if it is of interest.

If your schack is even bigger you may put the IPC chassis in a small 19" rack, you may have plenty of room for coils, ferrites, RF absorbents and other gadgets.

Another way is to use a well known PC brand, as they often is quite well designed. I have seen a lot of these as well in type approved marine use with quite small modifications, as conductive tape and mesh net on strategic places.

On the other hand:
I'm not a hard core radio amateur choosing the place of my home based on signal measurements and ground conductivity, My DXing is just for fun and to learn more about the radio-communications.
My own experience is that the PC box itself is not much of a problem, the most problems emanates from the I/Os connected to the computer, other equipment in the house, friendly neighbors getting new gadgets, telecom equipment, electric grid and sometimes a road light.

//Mats


Re: OT: Computer case with good EMI/RFI protection

the_shamen@...
 

If you use a miniITX board, there are many "Fanless" designs, usually expensive though.
That are solid aluminium, sometimes extruded. So apart from the cutouts for connectors
are more less pretty well screened.
You can get some that will take CPUs up to 60/70watt TDP, S & T variants of Intel CPU's

You can build youself, or get pre-built ones.



Re: OT: Computer case with good EMI/RFI protection

damienread@ymail.com
 

You will struggle, as you will need some form of vents to allow heat build up, If you are that worried you could always modify a cheap case with copper sheets, how effective this would be is another question.
Have you considered running a usb extention to the Elad, and you could also build a sheided box for the Elad, which would probably be cheaper than shedding a PC.

Damien Read
Rock, Worcestershire


OT: Computer case with good EMI/RFI protection

Kjell-Goran SM4GRP
 

Hi all,
I will build a new computer shortly so that SW2 can run smoother than on today's laptop. I have looked for an ATX tower case designed with EMI/RFI in mind but don't find any. I have even contacted one manufactuer and had the answer that, No, Our cases are not designed for low EMI/RFI emission. Sigh... So, what do I do? I ask all of you! Have anyone of you out there any experience on this subject? Anyone who knows of an ATX Tower Case that is OK for a radio amateur? Am I exagerating the problem?
73 / Kjell-Göran SM4GRP


Re: S-Meter FDM_SW2

Tony_AD0VC
 

As far as the attenuator is concerned, you can see it's effect by disconnecting your antenna from the receiver (at the back of the radio). With SW-2 running you will be seeing the receiver noise floor. Now, switch on the attenuator and the noise floor will rise. As long as the signals received from your antenna is above this noise floor, you will see no effect when applying the attenuator. So, connect the antenna with teh attenuator on. If the noise floor rises, then your antenna is providing signal above the attenuated noise floor.

The attenuator is only useful when very strong signals are overloading your receiver. If not quite overloading, then maybe they are strong enough to produce intermodulation birdies. Applying the attenuator will correct that.

I have an S-2 and the meter is accurate. I cannot say about the S-1. 

Tony



To: elad_sdr_en@...
From: elad_sdr_en@...
Date: Thu, 3 Mar 2016 06:36:44 -0800
Subject: [elad_sdr_en] Re: S-Meter FDM_SW2

 
Well i used my sark 110 and put 50 microvolts or -73dBm into my sdr FDM-S1 .The FDM -SW2 software  reads S7 my Ten Tec Orion reads S9.. The attenuator in the FDM-S1 does not change the meter reading and always assumed the attenuator  did nothing and never found it help any thing 


http://i7.photobucket.com/albums/y281/lauchlin/DSCN2568_zpsgm7p90cl.jpg

 


Re: S-Meter FDM_SW2

lasse moell
 

If properly implemented the measured value should NOT change if you switch in attenuation.
It is supposed to tell you the amplitude at the input of the receiver, and if you do switch in an attenuator the software compensates for this! Just like any professional measuring instrument :)

/Lasse SM5GLC

3 mars 2016 15:36:44 +01:00, skrev blauchlin@... [elad_sdr_en] :

 

Well i used my sark 110 and put 50 microvolts or -73dBm into my sdr FDM-S1 .The FDM -SW2 software  reads S7 my Ten Tec Orion reads S9.. The attenuator in the FDM-S1 does not change the meter reading and always assumed the attenuator  did nothing and never found it help any thing 







Re: S-Meter FDM_SW2

Brent Mcl
 

Well i used my sark 110 and put 50 microvolts or -73dBm into my sdr FDM-S1 .The FDM -SW2 software  reads S7 my Ten Tec Orion reads S9.. The attenuator in the FDM-S1 does not change the meter reading and always assumed the attenuator  did nothing and never found it help any thing 


http://i7.photobucket.com/albums/y281/lauchlin/DSCN2568_zpsgm7p90cl.jpg

 


Re: Wishlist for FDM-SW2

Tony_AD0VC
 

I would certainly use it.  A useful feature for me would be to be able to sample and hold the display so that I could switch to a different antenna and compare it. Basically have waveform memories which can be recalled and displayed at the same time for the purpose of comparing one situation to another.

Tony



To: elad_sdr_en@...
From: elad_sdr_en@...
Date: Wed, 2 Mar 2016 20:36:07 +0100
Subject: Re: [elad_sdr_en] Wishlist for FDM-SW2

 
Hi Mats

Already long before buying my FDM DUO, I have written a similar wish on
this list. At that time, I thought I could sell my Perseus after buying
the DUO, but in the meantime, I decided not to sell it. At the moment, I
am looking for buying a house and the HFSpan software with my Perseus
(portably driven by a 5V power-bank, plus a netbook) is very fine to
check quickly the noise levels (also in the neighborhood) when visiting
a new house.

I understood (at that time, about two years ago) that such a software is
not the first priority for the Elad team. But I also think (still now)
that such an application would be super for all those who don't own also
a Perseus and it also would be a good "plus" argument to buy an Elad
receiver or transceiver.

I think it should be possible to do all things that HFSpan does, plus
saving automatically the chosen averaging, plus being able to quickly
save a span curve (without using screenshots), plus eventually being
able to quickly choose a specified band to watch (e.g. amateur and
broadcast bands).

73
Udo, HB9ERD/DL3GN

Am 02.03.2016 um 19:03 schrieb mid_265_266@... [elad_sdr_en]:
> Hi all,
>
> - Who hasn't experienced problems related signal and noise levels?
> - How many of us has access to a spectrum analyzer?
>
> I myself as a rural user experience problems related signal and noise
> levels on a more or less regular basis, and have noted that there are
> frequent questions on the forum which may be related to this.
>
> Are there any other ELAD users who would like to see a feature like the
> HFSpan for perseus for FDM-SW2 or as a stand alone application?
>
>
>
> I so, what features should it include to be useful?
>
>
> //Mats

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