Re: [soft_radio] For Sale: PMSDR
hello can you tell me what frequencies it tunes and why you are celling? Hank - Original Message - From: n1ccw gus.stu...@gmail.com To: soft_radio@yahoogroups.com Sent: Monday, May 03, 2010 7:38 AM Subject: [soft_radio] For Sale: PMSDR Hello, I am selling my PMSDR. It is assembled, and it has both the switchboard accessory and the LCD option. Price is $185 shipped to the US. Please email me off-line with any questions. Thank you, Gus Yahoo! Groups Links
[soft_radio] E-Mu 0202
Hi, everyone. I bought a new E-Mu 0202 one week ago. I'm a little disappointed so far. I've written up my experience with it to date on my blog, garage-shoppe.com, but it boils down to image rejection (that is, phase and amplitude matching between the I and Q channels) which is inferior to my results with an SB-1090. I may be doing something wrong, and I'm not quite ready to give up on it. If you've used an E-Mu 0202, please read my blog post and tell me if I should be doing something differently. Thanks. 73, Pete, NI9N www.lazydogengineering.com www.garage-shoppe.com Inconveniently located 110 km. from Radioville, Indiana
Re: [soft_radio] E-Mu 0202
On 5/4/2010 2:06 PM, Peter wrote: Hi, everyone. I bought a new E-Mu 0202 one week ago. I'm a little disappointed so far. I've written up my experience with it to date on my blog, garage-shoppe.com, but it boils down to image rejection (that is, phase and amplitude matching between the I and Q channels) which is inferior to my results with an SB-1090. I may be doing something wrong, and I'm not quite ready to give up on it. If you've used an E-Mu 0202, please read my blog post and tell me if I should be doing something differently. Thanks. 73, Pete, NI9N Pete, the E-MU 0202 is a very good card, but a bit sensitive on how you set it up. You may want to read the message I wrote on this subject on the Winrad Yahoo group. Go to this link : http://groups.yahoo.com/group/winrad/message/767 73 Alberto I2PHD
RE: [soft_radio] E-Mu 0202
Alberto- Any chance you could post the contents of the message to this group? The Winrad group is locked down unless you are a member. -Ray WB6TPU From: soft_radio@yahoogroups.com [mailto:soft_ra...@yahoogroups.com] On Behalf Of Alberto I2PHD Sent: Tuesday, May 04, 2010 10:44 AM To: soft_radio@yahoogroups.com Subject: Re: [soft_radio] E-Mu 0202 On 5/4/2010 2:06 PM, Peter wrote: Hi, everyone. I bought a new E-Mu 0202 one week ago. I'm a little disappointed so far. I've written up my experience with it to date on my blog, garage-shoppe.com, but it boils down to image rejection (that is, phase and amplitude matching between the I and Q channels) which is inferior to my results with an SB-1090. I may be doing something wrong, and I'm not quite ready to give up on it. If you've used an E-Mu 0202, please read my blog post and tell me if I should be doing something differently. Thanks. 73, Pete, NI9N Pete, the E-MU 0202 is a very good card, but a bit sensitive on how you set it up. You may want to read the message I wrote on this subject on the Winrad Yahoo group. Go to this link : http://groups.yahoo.com/group/winrad/message/767 73 Alberto I2PHD This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately.
Re: [soft_radio] E-Mu 0202
On 5/4/2010 7:58 PM, Ray Anderson wrote: Alberto- Any chance you could post the contents of the message to this group? The Winrad group is locked down unless you are a member. -Ray WB6TPU Ray, yes, I forgot that you must be a member to access the archives of that group. Let me see if I succeed in copying the HTML format of that message. 73 Alberto I2PHD --- Copied message --- Dave, I use myself the E-MU 0202 with Winrad and it works quite well. My suggestion is to use it with the ASIO drivers, that got automatically installed when you installed the card. I also use it at 192 kHz, and have no problems. About the savings of the parameters in Winrad, which version are you using ? Up to version V1.33 all the working configuration of Winrad was saved in the registry, and when the program starts again , you will find the filters, I/Q switch, mode, etc. exactly as you left them at close down. I know that in the subsequent versions, those that were produced modifying the source code that I released, things have changed, in the sense that apparently the registry is no more used (they preferred to use an INI file), and some of the parameters are not saved. But I can't be more specific than this. Talking again of the E-MU 0202, probably you have already spotted this, but the adapter is a bit confusing about the rear panel connectors This image has annotations in Italian, but they are (I hope) understandable. In any case this is the translation : Questo NON va usato= This must not be used Ingresso sinistro = Left input Ingresso destro = Right input Questo NON e' stereo = This is not stereo http://www.sdradio.eu/images/retro.jpg Additionally, the position of the front level knobs is peculiar... the two amplifiers have different gains, so for the best image rejection the two knobs must be set as depicted in the following photo. Lasciare tutto a sinistra (a zero) = Leave at the left stop (zero position) Mettere piu' o meno come indicato = Set it approximately as in the photo http://www.sdradio.eu/images/fronte.jpg Hope this helps 73 Alberto I2PHD
Re: [soft_radio] E-Mu 0202
Alberto - Nice writeup! One thing I would add. BEFORE using the software Image Rejection, Fine Tune the GAIN balance by adjusting the Left Channel control for best suppression. Someone else, somewhere, suggested leaving the LEFT GAIN at minimum with the RIGHT GAIN at 10 o'clock. I believe the GAIN controls must be turned up somewhat, otherwise the S/N ratio will be degraded. So it might take some playing with the GAIN controls to get the best s/n ratio, AND equal gain through both channels. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com Alberto I2PHD wrote: On 5/4/2010 7:58 PM, Ray Anderson wrote: Alberto- Any chance you could post the contents of the message to this group? The Winrad group is locked down unless you are a member. -Ray WB6TPU Ray, yes, I forgot that you must be a member to access the archives of that group. Let me see if I succeed in copying the HTML format of that message. 73 Alberto I2PHD
Re: [soft_radio] E-Mu 0202
On 5/4/2010 8:34 PM, Garey Barrell wrote: One thing I would add. BEFORE using the software Image Rejection, Fine Tune the GAIN balance by adjusting the Left Channel control for best suppression. Someone else, somewhere, suggested leaving the LEFT GAIN at minimum with the RIGHT GAIN at 10 o'clock. I believe the GAIN controls must be turned up somewhat, otherwise the S/N ratio will be degraded. So it might take some playing with the GAIN controls to get the best s/n ratio, AND equal gain through both channels. Garey, correct, it is best to try to achieve the best balance (read : image suppression) acting on the hardware (Tayloe mixer, post amplifiers and sound adapter controls) with the software adjustments still at zero. Only when you are not able to balance it better, then use what the software offers you to fine tune that balance. Regarding the Gain controls, remember that, as written in the documentation of the sound adapter, those controls adjust the additional gain given to each channel... They must not be regarded as a conventional volume control, where the zero position means that no gain is applied in the E-MU 0202 each channel has a base gain, which is not that low, that can increased, if need be, using the controls on the front of the adapter. So leaving the right channel gain at zero does not incur in a bad S/N ratio. The two channels are slightly different from each other, as one is meant also for the microphone, while the other isn't. That's why it is advisable to increase slightly from the zero position the left channel additional gain. It is too easy to wrongly adjust them so to incur in a bad saturation situation I know... by experience :-( 73 Alberto I2PHD
Re: [soft_radio] E-Mu 0202
Hi group, Would it not be feasible to design a way to perform this 'equalization' automatically via software? Regards, Per-Tore On 4 May 2010 22:20, Alberto I2PHD i2...@weaksignals.com wrote: On 5/4/2010 8:34 PM, Garey Barrell wrote: One thing I would add. BEFORE using the software Image Rejection, Fine Tune the GAIN balance by adjusting the Left Channel control for best suppression. Someone else, somewhere, suggested leaving the LEFT GAIN at minimum with the RIGHT GAIN at 10 o'clock. I believe the GAIN controls must be turned up somewhat, otherwise the S/N ratio will be degraded. So it might take some playing with the GAIN controls to get the best s/n ratio, AND equal gain through both channels. Garey, correct, it is best to try to achieve the best balance (read : image suppression) acting on the hardware (Tayloe mixer, post amplifiers and sound adapter controls) with the software adjustments still at zero. Only when you are not able to balance it better, then use what the software offers you to fine tune that balance. Regarding the Gain controls, remember that, as written in the documentation of the sound adapter, those controls adjust the additional gain given to each channel... They must not be regarded as a conventional volume control, where the zero position means that no gain is applied in the E-MU 0202 each channel has a base gain, which is not that low, that can increased, if need be, using the controls on the front of the adapter. So leaving the right channel gain at zero does not incur in a bad S/N ratio. The two channels are slightly different from each other, as one is meant also for the microphone, while the other isn't. That's why it is advisable to increase slightly from the zero position the left channel additional gain. It is too easy to wrongly adjust them so to incur in a bad saturation situation I know... by experience :-( 73 Alberto I2PHD
