[digitalradio] Re: A "sneak peak" ... The microHAM DIGI KEYER:
--- In digitalradio@yahoogroups.com, Steve Hajducek <[EMAIL PROTECTED]> wrote: > > > What sample clock rates are supported? > > I looked at the web site, but I could not find those details. > > If a 48Khz sample clock or better is not directly supported than this > device is in the same category as the RigExpert, a device driver is > used for decimation and upconversion which causes extremely poor > performance when sample clock rates in excess of the hardware are required. > > The current PC-ALE and other programs that require a 48Khz sample > rate with NOT work well at all in such a situation. > > /s/ Steve, N2CKH I know about 11025/22050/44100 and 16000/32000/48000 but I have not checked for anything beyond that. Is there something in particular that you have in mind? 73, ... Joe Subich, W4TV microHAM America www.microHAM-USA.com Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] A "sneak peak" ... The microHAM DIGI KEYER:
On 3/24/06, Dr. Howard S. White <[EMAIL PROTECTED]> wrote: > > Looks like MicroHam is finally taking to first step to getting it "Right" > using an external sound card integrated into the box like they do at > RigExpert to get away from the Computer generated noise and artifacts of > internal sound Cards ... Howard, does computer generated noise and artifacts really make a difference? With my cheap on-board soundcard I have never noticed any noise that would make a difference in decoding a signal. -- Andy K3UK Fredonia, New York. Skype Me : callto://andyobrien73 Also available via Echolink Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] The microHAM DIGI KEYER: No upconversion/downconversion with decimation/recalcu
Thanks Andy! DIGI KEYER integrated codec suppors independent TX and RX sampling clock rates. Sampling rates are native, no upconversion/downconversion with decimation/recalculation errors. Supported TX sampling rates: 32000, 44100 and 48000Hz Supported RX sampling rates: 8000, 11025, 16000, 22050, 32000, 44100, 48000Hz 73 Jozef OM7ZZ Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] HELLSCHREIBER
I have had very limited contacts on mode HELL, in fact it was while experimenting with Andy K3UK and that was it. Last night I received an email from someone looking to start a Feld Hell group and maybe pique the interest in this mode. Below is the email I received and how to contact him if interested. 73--Scott WY3X Hello Myself and a few other amateurs are starting an informal HELLSCHREIBER club. I will issue FH numbers to other radio amateurs requesting one. There will be no fee, the number is yours forever. Once we get club numbers out and on the air, it will be fun collecting or exchanging them and there will be awards issued by the club. The purpose of the club will be to promote Feld Hell in any mode, and get more amateurs on the air in the mode of Feld Hell any mode of it FM Hell, BPSK Hell or any other mode of it not invented yet. Thanks for reading and if you want a number E mail me at [EMAIL PROTECTED] or check out our website at: http://www.feldhellclub.co.uk/. I hope to do the whole thing on E mail, and will ask help from other members after the club gets going. Don't wait, apply now, get a club number and get on the air with Feld Hell. Please pass this information on to anyone you think might be interested. Larry N3LFC FH#2 Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] The microHAM DIGI KEYER: No upconversion/downconversion with decimation/recalcu
> The microHAM DIGI KEYER:
> http://www.microham-USA.com/Products/dk.html
>
> DIGI KEYER is truly "plug and play" with either Windows XP or Apple
> OS 10 ... supports dual receive radios and has the lowest noise floor
> of any device tested other than the > $500 "professional" sound cards.
> DIGI KEYER integrated codec suppors independent TX and RX sampling
> clock rates. Sampling rates are native, no upconversion/downconversion
> with decimation/recalculation errors.
> Supported TX sampling rates:
> 32000, 44100 and 48000Hz
> Supported RX sampling rates:
> 8000, 11025, 16000, 22050, 32000, 44100, 48000Hz
> 73 Jozef OM7ZZ
Does ths device provide all of the same features
as the MixW RigExpert USB?
What are the differences, please?
http://www.eham.net/reviews/detail/3765
Is there any reason why only the proprietary MS and Apple
OS's are listed. Will this device not support Linux?
--
~~
Thanks! & 73, doc kd4e
|_|___|_|
| | & | |
{|
/\ {|
/ \ {|
/\{|
/ @ \ {|
| |~_||
| -| ||
\ # http://bibleseven.com
KD4E =
West Central Florida
~~~
Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org
Other areas of interest:
The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/
DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion)
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/digitalradio/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
[digitalradio] Re: The microHAM DIGI KEYER: No upconversion/downconversion with decimation/reca
--- In digitalradio@yahoogroups.com, doc <[EMAIL PROTECTED]> wrote: > > Does ths device provide all of the same features > as the MixW RigExpert USB? > > What are the differences, please? > http://www.eham.net/reviews/detail/3765 Full features and specifications are available at: www.microHAM-USA.com/Products.dk.html However: DIGI Keyer will handle input/output levels to 4 V P-P Codec sampling is standard rates to 48 KHz. case is metal front panel level controls standard software/drivers full DC isolation between comptuer and radio no noisy DC-DC coverters > Is there any reason why only the proprietary MS and Apple > OS's are listed. Will this device not support Linux? Because we have tested it with WIndosXP and Apple OS 10. The codec used is supported by the current LINUX distributions. An independent developer is currently working on a LINUX version of the driver/control program for microKEYER, CW KEYER and DIGI KEYER. Since that effort is an independent effort I have no idea when it will be released. 73, ... Joe Subich, W4TV microHAM America www.microHAM-USA.com Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] Re: A "sneak peak" ... The microHAM DIGI KEYER:
Howard, The issue of internal vs. external sound card is a canard. The only thing that matters is that the level of receiver generated noise be sufficiently higher than the "noise floor" of the sound system to allow the DSP to function properly. NO sound system, no matter how low the noise floor, will copy a signal that is buried in the noise by more than the coding gain of the protocol (about 10 dB at best). If your radio has a high impedance, low level output add a quaility, low noise preamplifier between the detector output and the sound card input. Again, the issue isn't internal vs. external ... it is proper system design. microHAM produces products for multiple price points and various uses. Including USB sound in some products fills a need for some users ... particularly those with laptops that lack full featured sound support. Moving sound to a second sound device also answers the problem of "Windows Sounds" contaminating the digital signals (but so does a second internal sound card). The DIGI KEYER is designed to address the needs of the "digital only" user for a high quality, "all in one box" solution tailored for their specific needs. 73, ... Joe Subich, W4TV microHAM America, LLC. www.microHAM-USA.com --- In digitalradio@yahoogroups.com, "Dr. Howard S. White" <[EMAIL PROTECTED]> wrote: > > Looks like MicroHam is finally taking to first step to getting it "Right" > using an external sound card integrated into the box like they do at > RigExpert to get away from the Computer generated noise and artifacts of > internal sound Cards ... Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[digitalradio] Have MFJ 1278 TNC Need Manual!!!
Hello Folks, I have a MFJ 1278 multi mode tnc and im in need of a manual I know this is a long shot but MFJ no longer has the manuals for this model is there anyone out there that can copy the manual or put it on pdf file and email it to me. I've heard bad things about this tnc and some good but im trying to do 2 meter packet at this time and maybe some hf digital modes later . Any help would be greatly appreciated im at a lost here!!. Thanks Jeff KD4QIT Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] A "sneak peak" ... The microHAM DIGI KEYER:
Yes Definitely a significant difference... I ran parallel testing a while ago with virtually every interface then on the market in trying to discover an interface to standardize on for our Emcomm Group. Two different but indentical computers, in parallel, two different interfaces, connected to the same radio. RigExpert and External Sound Cards would decode signal about 6db to 10 db better that those using the internal sound cards...we could copy signals 100% on RigExpert, etc when devices such as RigBlaster no longer copied anthing. We finally traced it back to the fact that the internal sound cards lived inside a very noisy environment inside the computers... even using an external sound card, greatly improved the results So yes it does matter... and at that time we standardized on the RigExpert. Obviously I am hoping the new microHam device has a 48KHz or faster clock and I am intrigued by the statement that it does not need special drivers __Howard S. White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LAWebsite: www.ky6la.com "No Good Deed Goes Unpunished""Ham Antennas Save Lives - Katrina, 2003 San Diego Fires, 911" - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Friday, March 24, 2006 4:10 AM Subject: Re: [digitalradio] A "sneak peak" ... The microHAM DIGI KEYER: On 3/24/06, Dr. Howard S. White <[EMAIL PROTECTED]> wrote:>> Looks like MicroHam is finally taking to first step to getting it "Right"> using an external sound card integrated into the box like they do at> RigExpert to get away from the Computer generated noise and artifacts of> internal sound Cards ...Howard, does computer generated noise and artifacts really make adifference? With my cheap on-board soundcard I have never noticedany noise that would make a difference in decoding a signal.--Andy K3UKFredonia, New York.Skype Me : callto://andyobrien73Also available via Echolink Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) SPONSORED LINKS Ham radio Craft hobby Hobby and craft supply YAHOO! GROUPS LINKS Visit your group "digitalradio" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Re: [digitalradio] The microHAM DIGI KEYER: No upconversion/downconversion with decimation/recalcu
That sounds great!! __Howard S. White Ph.D. P. Eng., VE3GFW/K6 ex-AE6SM KY6LAWebsite: www.ky6la.com "No Good Deed Goes Unpunished""Ham Antennas Save Lives - Katrina, 2003 San Diego Fires, 911" - Original Message - From: Andrew O'Brien To: digitalradio@yahoogroups.com Sent: Friday, March 24, 2006 4:51 AM Subject: [digitalradio] The microHAM DIGI KEYER: No upconversion/downconversion with decimation/recalcu Thanks Andy!DIGI KEYER integrated codec suppors independent TX and RX sampling clock rates. Sampling rates are native, no upconversion/downconversion with decimation/recalculation errors.Supported TX sampling rates:32000, 44100 and 48000HzSupported RX sampling rates:8000, 11025, 16000, 22050, 32000, 44100, 48000Hz73 Jozef OM7ZZ Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) YAHOO! GROUPS LINKS Visit your group "digitalradio" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[digitalradio] Re: Have MFJ 1278 TNC Need Manual!!!
--- In digitalradio@yahoogroups.com, "jeffnjr484" <[EMAIL PROTECTED]> wrote: > > Hello Folks, > > I have a MFJ 1278 multi mode tnc and im in need of a manual I know > this is a long shot but MFJ no longer has the manuals for this model > is there anyone out there that can copy the manual or put it on pdf > file and email it to me. I've heard bad things about this tnc and some > good but im trying to do 2 meter packet at this time and maybe some hf > digital modes later . Any help would be greatly appreciated im at a > lost here!!. > Thanks > Jeff KD4QIT Welcome to the group Jeff. This may help a little. To: QST Subject: MJF-1278 Software Documentation P R E L I M I N A R Y Instructions for 1278.EXE MFJ-1278 (R) Terminal Program Distributed by KA3DXX, Severn, MD USA 1. MACHINE REQUIREMENTS a. Hardwire Required: IBM (R) PC, or 100% compatible operating under PC(MS)-DOS 2.0 or higher b. One floppy disk drive c. 150 KBytes available RAM d. Printer (optional) 2. SOFTWARE a. 1 - 5 1/4 inch floppy DS DS (360K floppy) b. 1278.EXE - Terminal Program c. OPEN.MFJ - Configuration file (use optional) d. CLOSE.MFJ - Configuration file (use is optional) 3. GETTING STARTED a. If the RS-232 (COMn:) port to which your MFJ-1278 is attached is configured as COM1: and you are capable of operating at 9600 baud, then you may accept the program default settings of COM1:9600,E,7,1 by simply typing: 1278 b. If you plan to use the OPEN.MFJ configuration file (described later) then you may include a SETUP command in that file. If you use the SETUP command in the configuration file, then it must be the first command in the OPEN.MFJ file. If you choose this method then execution begins simply by typing: 1278 c. If you do not want the default settings and do not wish to use a configuration file, or wish to override either the default settings in the terminal program or in the configuration file, then begin execution by typing: 1278 n,,p,s where n= port number, either 1 or 2 = baud rates of 300, 1200 2400, 4800, or 9600 p= parity of Even, Odd, or None s= number of data bits, usually 7 4. CONFIGURATION FILES a. Two configuration files are allowed as options to configure certain terminal parameters to your choosing both when initializing the program AND when terminating the program. b. Both files are simple ASCII files that may be created/edited with EDLIN (supplied with DOS) or any other ASCII text editor. c. Any valid MFJ-1278 command is allowed in the file to configure the MFJ-1278 to one's liking; several pseudo commands are provided for configuring the terminal program itself. d. Why use the configuration files at all? My personal experience with the RAM battery backup system in the MFJ-1278 is that if the power is turned on after having been off for only a short time, all values in the RAM resort to the default values. To avoid the nuisance of having to reset some of the values (including my call!) each time by hand, I have included all changes to the default values in the configuration file. If more than one operator uses the same MFJ-1278, then each can have his/her own OPEN.MFJ, thus customizing the unit for each call for each desired mode of operation. When I turn off the computer, but still want to be able to use the MFJ-1278 as a CW keyer, I include the command MODE CW in the CLOSE.MFJ file to leave the MFJ-1278 in the CW mode. (A corresponding MODE HP is included in the OPEN.MFJ file to restore the MFJ-1278 to HF Packet operation when the terminal program is next initiated.) 5. PSEUDO COMMANDS a. SETUP n:,p,sOverrides default values in terminal program. IF USED, MUST BE FIRST COMMAND IN OPEN.MFJ file. See par 3.c., above. (NOTE: a colon (:) is used here!) b. COLOR ON/OFF If you have an RGB monitor, by all means use COLOR ON c. FOREx n and BACKx n Set Foregrou
[digitalradio] [chip64] Calling CQ Tonight
-- Forwarded message -- From: Orville Wayne Cypret <[EMAIL PROTECTED]> Date: Mar 24, 2006 1:49 PM Subject: [chip64] Calling CQ Tonight To: [EMAIL PROTECTED] I'll be on 7.0775 beginning around 0115Z tonight calling CQ. I'll stay on freq for a half hour or so. Hope somebody else is there to answer. Cheers, Wayne Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [digitalradio] A "sneak peak" ... The microHAM DIGI KEYER:
Howard White wrote: > I ran parallel testing a while ago with virtually every interface > then on the market in trying to discover an interface to standardize > on for our Emcomm Group. > > Two different but indentical computers, in parallel, two different > interfaces, connected to the same radio. > > RigExpert and External Sound Cards would decode signal about 6db > to 10 db better that those using the internal sound cards...we > could copy signals 100% on RigExpert, etc when devices such as > RigBlaster no longer copied anthing. > > We finally traced it back to the fact that the internal sound cards > lived inside a very noisy environment inside the computers... even > using an external sound card, greatly improved the results Unfortunately, your test was not properly designed or conducted. If you simply paralleled the audio feed to the sound cards - particularly if you were feeding the sound cards from Icom radios with 100 mV/50K Ohm outputs - you were could not have possibly provided the proper drive levels to each sound device to guarantee optimum performance. Yes, an internal sound card CAN have a higher noise floor than an external card particularly if, like the DIGI KEYER, the external sound card uses a properly filtered supply, does not include any noisy DC to DC converters and uses a high stability voltage reference for the codec. However, almost every codec on the market is capable of handling inputs of nearly 5 v p-p. If the input audio is properly impedance and level matched to use the full dynamic range of the codec, the noise floor will still be down some 70 to 80 dB. That will be below the effective (quiet band) noise level of the receiver ... with AGC in the RF and IF stages as well as DSP demodulation, the best of today's amateur receivers have only 50 or 60 dB of variation in their detector output. Any quality 16 bit codec will have 87 to 89 dB of dynamic range (noise floor to clipping) ... the difference in performance is the way the designer gets the audio to the codec. If the levels and impedance are matched to take full advantage of the available dynamic range, the effective dynamic range will be very close to the maximum available from the chip. If on the other hand the power supply is noisy and the audio levels are mis-matched (two devices with different input impedance paralleled with no attention to insuring equal and proper drive levels), it would be easy to see only 50 to 55 dB of dynamic range. > So yes it does matter... and at that time we standardized on the > RigExpert. Again, it would not matter if the internal sound card were driven with the proper level. The 100 mV @ 50K drive of many amateur radios gives up nearly 25 dB of codec dynamic range right out of the gate. > Obviously I am hoping the new microHam device has a 48KHz or > faster clock and I am intrigued by the statement that it does > not need special drivers Yes, the codec supports 48 KHz for both transmit and receive. It complies with the USB sound standard and is recognized as such by WindowsXP, Apple OS 10 and LINUX. Any application that will work with the native sound capabilities of those operating systems will be able to use the sound capability of DIGI KEYER without any special drivers. microHAM Router provides Virtual Serial port support (for PTT, CW, and Squelch) in Windows. Macintosh support is build into MacLoggerDX and an independent third party developer is doing LINUX support. Cooperative arrangements can be made with qualified developers who have valid reasons for direct access to the DIGI KEYER (or microKEYER and CW Keyer) internal MCU. 73, ... Joe Subich, W4TV microHAM America www.microHAM-USA.com Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [digitalradio] Have MFJ 1278 TNC Need Manual!!!
jeffnjr484 wrote: > I have a MFJ 1278 multi mode tnc and im in need of a manual I know > this is a long shot but MFJ no longer has the manuals for this model > is there anyone out there that can copy the manual or put it on pdf > file and email it to me. I've heard bad things about this tnc and some http://www.ad5jn.com/Documents/private/MFJ%201278%20Manual.pdf -- 73 de Nick N2QZ Section Traffic Manager, Eastern New York Section FISTS #11469 SKCC #1027 Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
