Re: [Elecraft] AGC Setting for PSK-31
Those of you who have a desktop computer with an available PCI slot and are looking for an alternative soundcard at a lesser price, you might want to find a SoundBlaster Live 24 as an add-on. It is a 24 bit soundcard that can operate duplex and has a decent dynamic range and good S/N ratio. I have mine configured as the default soundcard because I like to listen to good music and do recordings. I will also use it for the receiving end of my Z1/Softrock panadapter when that project is finsihed. I then use the stock on-board computer soundcard (not the default card) for digital modes since I can see little difference in the *usable* dynamic range - (my computer uses a SoundMAX) - it is not the greatest, but it does OK for me in digital modes. The net result is that Windows sounds can occur 'on-top' of my music or panadapter output, but I will not be transmitting those sounds because I do not use this default card for data modes. If you are using a laptop for the shack computer, then you best choice is an external USB soundcard. I prefer to use a desktop computer in the hamshack. 73, Don W3FPR Adam Koczarski wrote: > >> -Original Message- >> From: Joe Subich, W4TV [mailto:li...@subich.com] >> Sent: Thursday, January 22, 2009 4:27 PM >> To: 'Adam Koczarski'; elecraft@mailman.qth.net >> Subject: RE: [Elecraft] AGC Setting for PSK-31 >> >> That's fine if no other program (or Windows) decides to send >> something to the sound card while you are transmitting. It >> also works if you don't run anything else while running DM780. >> However, there are reasons for a second sound card ... and a >> need for other station control/interfacing capabilities in >> some of the "purpose built" interfaces. >> >> If you are comfortable with the capabilities of your built-in >> soundcard, congratulations. >> >> > You're absolutely correct. That dawned on me after I sent the message. I'm > using a laptop with only a few radio related programs installed on it for > use with my K3. I guess disabling the Windows sounds would be the best > solution if you don't have enough sound cards to run the apps you're using. > I already have two, one for the LP-PAN and the internal card I'm using for > data transmissions, so I guess I'd need a third sound card. > > > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> -Original Message- > From: Joe Subich, W4TV [mailto:li...@subich.com] > Sent: Thursday, January 22, 2009 4:27 PM > To: 'Adam Koczarski'; elecraft@mailman.qth.net > Subject: RE: [Elecraft] AGC Setting for PSK-31 > > That's fine if no other program (or Windows) decides to send > something to the sound card while you are transmitting. It > also works if you don't run anything else while running DM780. > However, there are reasons for a second sound card ... and a > need for other station control/interfacing capabilities in > some of the "purpose built" interfaces. > > If you are comfortable with the capabilities of your built-in > soundcard, congratulations. > You're absolutely correct. That dawned on me after I sent the message. I'm using a laptop with only a few radio related programs installed on it for use with my K3. I guess disabling the Windows sounds would be the best solution if you don't have enough sound cards to run the apps you're using. I already have two, one for the LP-PAN and the internal card I'm using for data transmissions, so I guess I'd need a third sound card. > The USB Interface II is not a sound card ... it is a purpose > built USB to serial converter with audio isolation transformers. > The audio capabilities are redundant with the K3 since it has > transformer isolated line in/line out. > Thank you for the clarification. Adam - ka7ark ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> Also, since HRD is using PTT via the LP-Bridge so I don't see > the radio try to transmit when/if the computer makes sound > via the internal soundcard. That's fine if no other program (or Windows) decides to send something to the sound card while you are transmitting. It also works if you don't run anything else while running DM780. However, there are reasons for a second sound card ... and a need for other station control/interfacing capabilities in some of the "purpose built" interfaces. If you are comfortable with the capabilities of your built-in soundcard, congratulations. > Isn't the MicroHAM USB Interface II more than just a USB > soundcard? Would it really be required? An additional 0202 > for data modes would be cheaper. The USB Interface II is not a sound card ... it is a purpose built USB to serial converter with audio isolation transformers. The audio capabilities are redundant with the K3 since it has transformer isolated line in/line out. > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Adam Koczarski > Sent: Thursday, January 22, 2009 12:28 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] AGC Setting for PSK-31 > > > > > -Original Message- > > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > > boun...@mailman.qth.net] On Behalf Of Julian, G4ILO > > Sent: Thursday, January 22, 2009 2:40 AM > > To: elecraft@mailman.qth.net > > Subject: Re: [Elecraft] AGC Setting for PSK-31 > > > > > > I can honestly > > say > > I have not noticed any difference either on TX or RX in > ordinary sound > > card operation. > > I'm using a Thinkpad laptop with my K3. I have a Creative > E-MU 0202 connect to an LP-PAN for use with the IF output on > the K3. I've been using the built in SoundMAX sound card in > the laptop to do the data modes via HRD and DM. So far so > good. Would I really see any advantage in using another > external sound card for data modes? Isn't the MicroHAM USB > Interface II more than just a USB soundcard? Would it really > be required? An additional 0202 for data modes would be cheaper. > > Also, since HRD is using PTT via the LP-Bridge so I don't see > the radio try to transmit when/if the computer makes sound > via the internal soundcard. It's just like having the Windows > sounds disabled. If I pull the plug from the laptops sound > output I can hear the laptop sound if/when I need it without > having to re-enable the sound card. > > Adam - ka7ark > http://ka7ark.com > > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > boun...@mailman.qth.net] On Behalf Of Jay Bromley > Sent: Thursday, January 22, 2009 12:00 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] AGC Setting for PSK-31 I just did a little poking around for USB sound cards. The link http://www.usbgear.com/USB-Sound.html has a slew of USB sound cards packaged a variety of different ways. The specs on these devices appear to be identical. Probably the same internals, just package a variety of ways for marketing purposes. When specs are listed they all appear to be about the same, Sampling rate (fs): 32, 44.1, 48 kHz. I looked for specs on the internal sound card in the Thinkpad T60p. It uses a AD1981HD: HD Audio SoundMAXR Codec. The specs seem to be about the same as all these other USB devices. HD audio sample rates 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz Greater than 90 dB dynamic range S/PDIF output: 32 kHz, 44.1 kHz or 48 kHz, 16- or 24-bit Doesn't look like any of these $20 devices would gain me a thing. I was just looking for a cheap alternative to play with. Adam - ka7ark ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
HI Adam, Yes the MKII is more than just a sound card interface. It also has provisions for FSK keying, Winkeyer, Built-in readout that can be configured many ways. PTT/Amp keying buffer, Footswitch input, LNA relay keying. In the virtual router that is used with it has voice message buffers CW, FSK, and voice. I could go on forever. It might not hurt to join their reflector and monitor it for a while. If I wasn't going to do FSK keying I would use what I have for a while and get the feel of things. 73 de jay/w5jay.. > > I'm using a Thinkpad laptop with my K3. I have a Creative E-MU 0202 > connect > to an LP-PAN for use with the IF output on the K3. I've been using the > built > in SoundMAX sound card in the laptop to do the data modes via HRD and DM. > So > far so good. Would I really see any advantage in using another external > sound card for data modes? Isn't the MicroHAM USB Interface II more than > just a USB soundcard? Would it really be required? An additional 0202 for > data modes would be cheaper. > > Also, since HRD is using PTT via the LP-Bridge so I don't see the radio > try > to transmit when/if the computer makes sound via the internal soundcard. > It's just like having the Windows sounds disabled. If I pull the plug from > the laptops sound output I can hear the laptop sound if/when I need it > without having to re-enable the sound card. > > Adam - ka7ark > http://ka7ark.com > :// ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
I have both the Navigator and Microkeyer II with built in sound cards and yes I can see a difference (used on other rigs here). Not much compared to my high end sound card I am using in another computer with the K3. It is not one of those professional jobs, just a gaming one from Creative that cost a few hundred when new. Even that is much better against overload compared to the stock internal sound card. However the new internals are sure better than there were a few years ago! The thing I like using the USB external boxes is normally less wires compared to something like a Rig Blaster Pro. However except for FSK keying the K3 is right up there with very few wires, line in, line out, and RS232 cable. Simple and nice! For years I heard from RTTY contesters to just use the stock internal board sound card. However I do see enough performance advantage to keep using the external boxes or after market sound cards. If you haven't ran calibration on your internal sound card that will also help in performance. I have also found very few internal laptop sound cards that are up to much of the task asked of them, most of the time they are very poor. The two interfaces I mentioned above are worth their weight in gold if I am using my laptop and while bypassing their internal card that most of the time stinks in performance! There are some high in XLS Dels I have seen that don't fall in this category. Like with everything there is always the exception to the rule! 73 de w5jay/jay.. >> I'm using a Thinkpad laptop with my K3. I have a Creative E-MU 0202 >> connect >> to an LP-PAN for use with the IF output on the K3. I've been using the >> built >> in SoundMAX sound card in the laptop to do the data modes via HRD and DM. >> So >> far so good. Would I really see any advantage in using another external >> sound card for data modes? > > I find the built-in soundcard function on my various computers to be > perfectly adequate for soundcard-based digital modes with my K3 and > other radios. I have not run exhaustive tests, but I've not observed > any performance improvememt when using the EMU0202 or one of the > built-in-soundcard-USB-based-radio-interface widgets here. > > YMMV > > 73, > > Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
On Jan 22, 2009, at 10:16 AM, Simon (HB9DRV) wrote: > A good soundcard will not suffer from intermod - just like a good > radio. Not just with intermod, but many mediocre sound cards also suffer from bad second harmonic distortion that could be more troublesome than IMD. I have measured poor ones that have second harmonic distortion as bad as -55 dB, and I have seen traces of the second harmonic of a strong signal from them on a waterfall. I.e., similar to the problem with the K3 Line Output before applying the K8ZOA modifications. Fortunately, unlike IMD, you can nudge the VFO knob a little and get the second harmonic to fall at a different spot in the audio spectrum from a weak signal that you are trying to copy. Simon is right. The reason for using a better quality sound card with narrow band rigs is not necessarily to get a lower noise floor. It is to get lower IMD and harmonic distortion. Even the worst sound card that I have encountered in the past half dozen years had a dynamic range which beats the analog gold standard that we use on HF RTTY, the HAL ST-8000 modem. If you are using filters that only lets through a single signal to the sound card, none of this matters -- you should be able to live with 50 dB of dynamic range if only a single signal reaches the sound card, and the rig's AGC can keep the amplitude of that signal moderately constant. But many of us digital mode operators use at least a 2 kHz bandwidth; that is where good and poor sound cards can make a difference. However IMHO, it is always better to use even a poor external output sound card; to prevent system chimes, music, etc, from getting out on the air. 73 Chen, W7AY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
One of the premium PCI sound cards highly recommended by N8LP (the M-Audio Audiophile 2496) for use with LP-PAN, albeit with a 90 KHz display limitation, is currently available for $85 at Amazon.com, and it might be found even cheaper elsewhere. http://www.amazon.com/gp/product/B6I5H5 73, Dave AB7E Original Message Subject: Re: [Elecraft] AGC Setting for PSK-31 From: "Simon \(HB9DRV\)" Date: Thu, January 22, 2009 11:16 am A *very* good reason for using a second soundcard is that Windows will not use it for send the clicks, clacks and beeps you hear while playing with your PC. On SSTV it's easy to see when someone is using the internal soundcard instead of second card. A good soundcard will not suffer from intermod - just like a good radio. So even if you don't want to shell out for a microHam spend $50 and get a second soundcard anyway and use this for your radio. Simon Brown, HB9DRV www.ham-radio-deluxe.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
- Original Message - From: "Lyle Johnson" > > I find the built-in soundcard function on my various computers to be > perfectly adequate for soundcard-based digital modes with my K3 and > other radios. > A *very* good reason for using a second soundcard is that Windows will not use it for send the clicks, clacks and beeps you hear while playing with your PC. On SSTV it's easy to see when someone is using the internal soundcard instead of second card. A good soundcard will not suffer from intermod - just like a good radio. So even if you don't want to shell out for a microHam spend $50 and get a second soundcard anyway and use this for your radio. Simon Brown, HB9DRV www.ham-radio-deluxe.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> I'm using a Thinkpad laptop with my K3. I have a Creative E-MU 0202 connect > to an LP-PAN for use with the IF output on the K3. I've been using the built > in SoundMAX sound card in the laptop to do the data modes via HRD and DM. So > far so good. Would I really see any advantage in using another external > sound card for data modes? I find the built-in soundcard function on my various computers to be perfectly adequate for soundcard-based digital modes with my K3 and other radios. I have not run exhaustive tests, but I've not observed any performance improvememt when using the EMU0202 or one of the built-in-soundcard-USB-based-radio-interface widgets here. YMMV 73, Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > boun...@mailman.qth.net] On Behalf Of Julian, G4ILO > Sent: Thursday, January 22, 2009 2:40 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] AGC Setting for PSK-31 > > > I can honestly > say > I have not noticed any difference either on TX or RX in ordinary sound > card > operation. I'm using a Thinkpad laptop with my K3. I have a Creative E-MU 0202 connect to an LP-PAN for use with the IF output on the K3. I've been using the built in SoundMAX sound card in the laptop to do the data modes via HRD and DM. So far so good. Would I really see any advantage in using another external sound card for data modes? Isn't the MicroHAM USB Interface II more than just a USB soundcard? Would it really be required? An additional 0202 for data modes would be cheaper. Also, since HRD is using PTT via the LP-Bridge so I don't see the radio try to transmit when/if the computer makes sound via the internal soundcard. It's just like having the Windows sounds disabled. If I pull the plug from the laptops sound output I can hear the laptop sound if/when I need it without having to re-enable the sound card. Adam - ka7ark http://ka7ark.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> I can honestly say I have not noticed any > difference either on TX or RX in ordinary sound card > operation. With the K3 the Line Out level is sufficient for nearly any sound card as long as care is taken to avoid obvious wiring errors that would introduce noise. However, with some rigs that have limited outputs (some early Kenwood transceivers or the K2 without the W3FPR modification) the signal level is in the noise floor of the soundcard. > Although the K3's receiver may have the dynamic range to > handle working with the AGC off I think you would increase > the risk of clipping or distortion somewhere in the audio > path that would result in "ghost" signals. Without AGC the dynamic range at Line Out is sufficient to drive most soundcards into clipping with an S9 signal if the "no signal" noise floor is set 10 dB above the noise floor of the sound card. Some level of AGC (compression at S9 or above) is beneficial but can also result in blocking by strong signals in a wideband decode mode as you point out. 73, ... Joe, W4TV > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Julian, G4ILO > Sent: Thursday, January 22, 2009 5:40 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] AGC Setting for PSK-31 > > > > I recently purchased an SB Live 24 card to use for datamodes, > so I could use the built-in Realtek sound for normal computer > purposes. I can honestly say I have not noticed any > difference either on TX or RX in ordinary sound card > operation. I imagine there might be a benefit if I was using > it with an SDR (SoftRock, etc.) but I haven't tried that. > > Although the K3's receiver may have the dynamic range to > handle working with the AGC off I think you would increase > the risk of clipping or distortion somewhere in the audio > path that would result in "ghost" signals. I prefer to > operate with AGC on and use the filtering to exclude other > signals that would affect the AGC to the detriment of the one > I am trying to copy. > > - > Julian, G4ILO. K2 #392 K3 #222. > http://www.g4ilo.com/ G4ILO's Shack > http://www.ham-directory.com/ Ham > Directoryhttp://www.g4ilo.com/kcomm.html KComm for > Elecraft K2 and K3 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
Joe Subich, W4TV wrote: > > > If you don't want the Windows sounds getting from your computer to the radio, > consider > one of the interfaces with a dedicated USB soundcard, radio > control (CAT interface) and other features in one box. > > > Or just connect up the K-3 directly and turn the Windows sounds off. They are a PITA anyway. Greg KD7SRC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
I recently purchased an SB Live 24 card to use for datamodes, so I could use the built-in Realtek sound for normal computer purposes. I can honestly say I have not noticed any difference either on TX or RX in ordinary sound card operation. I imagine there might be a benefit if I was using it with an SDR (SoftRock, etc.) but I haven't tried that. Although the K3's receiver may have the dynamic range to handle working with the AGC off I think you would increase the risk of clipping or distortion somewhere in the audio path that would result in "ghost" signals. I prefer to operate with AGC on and use the filtering to exclude other signals that would affect the AGC to the detriment of the one I am trying to copy. - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/AGC-Setting-for-PSK-31-tp2194895p2197068.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
- Original Message - From: "Joe Subich, W4TV" > > Unfortunately the RigBlaster series of interfaces are not soundcards > nor do they - as far as I know - provide any receive interface. They > are essentially a transmit interface that provides isolation and > switching for the mic line. > I never knew taht - seem you're right. I was getting confused here... > > I'm partial to the microHAM products (www.microHAM-USA.com) > A good option. Simon Brown, HB9DRV www.ham-radio-deluxe.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
> The K3 is an excellent receiver so don't cripple the receive > chain with a poor soundcard - get a quality soundcard such as > the Rigblaster and you'll know there's nothing better you can > do. Unfortunately the RigBlaster series of interfaces are not soundcards nor do they - as far as I know - provide any receive interface. They are essentially a transmit interface that provides isolation and switching for the mic line. If you are getting started, connect the line output from your computer sound card to the Line In on the K3 and connect the Line Out of the K3 to the Line in on your computer soundcard and have fun learning all about PSK31. If you don't want the Windows sounds getting from your computer to the radio, consider one of the interfaces with a dedicated USB soundcard, radio control (CAT interface) and other features in one box. Such devices are made by several companies - I'm partial to the microHAM products (www.microHAM-USA.com) but then I distribute them in North and South America. 73, ... Joe, W4TV > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Simon (HB9DRV) > Sent: Wednesday, January 21, 2009 5:16 PM > To: Frank MacDonell; Elecraft > Subject: Re: [Elecraft] AGC Setting for PSK-31 > > > - Original Message - > From: "Frank MacDonell" > > > >I have a K3/10 (with a 66' dipole in the attic) and get great > >reception on PSK-31. > > > > I have two questions. Should AGC be "on" or "off"? Aside > from having a > > dedicated sound card...is there a Rx or Tx advantage to > using an > > interface like Rigblaster. Thanks again for all the help you have > > provided! > > The K3 is an excellent receiver so don't cripple the receive > chain with a > poor soundcard - get a quality soundcard such as the > Rigblaster and you'll > know there's nothing better you can do. Talk to Joe W4TV - > he's active in > these forums and can help as well. > > Use AGC however you want. The K3's dynamic range is so good > that using your > 66' dipole you'll probably never suffer from strong signal overload, > especially if you're able to switch in a narrow filter if the > going gets > tough, for example in an RTTY contest when 1KW seems to be > the minimum power > level allowed :-) > > Simon Brown, HB9DRV > www.ham-radio-deluxe.com > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
- Original Message - From: "Simon (HB9DRV)" > > The K3 is an excellent receiver so don't cripple the receive chain with a > poor soundcard - get a quality soundcard such as the Rigblaster and you'll > know there's nothing better you can do. Talk to Joe W4TV - he's active in > these forums and can help as well. > BTW - what's your current soundcard? Simon Brown, HB9DRV www.ham-radio-deluxe.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] AGC Setting for PSK-31
- Original Message - From: "Frank MacDonell" >I have a K3/10 (with a 66' dipole in the attic) and get great > reception on PSK-31. > > I have two questions. Should AGC be "on" or "off"? Aside from having a > dedicated sound card...is there a Rx or Tx advantage to using an > interface like Rigblaster. Thanks again for all the help you have > provided! The K3 is an excellent receiver so don't cripple the receive chain with a poor soundcard - get a quality soundcard such as the Rigblaster and you'll know there's nothing better you can do. Talk to Joe W4TV - he's active in these forums and can help as well. Use AGC however you want. The K3's dynamic range is so good that using your 66' dipole you'll probably never suffer from strong signal overload, especially if you're able to switch in a narrow filter if the going gets tough, for example in an RTTY contest when 1KW seems to be the minimum power level allowed :-) Simon Brown, HB9DRV www.ham-radio-deluxe.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
