Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount
On Tuesday Prather used a Straight-Key to send: -Original Comment--- I'm curious, what do you consider a reasonable amount? On Mon, Sep 23, 2013 at 9:29 PM, Edward Dickinson III softb...@windstream.net wrote: The width of the K3 Notch-Filter is not adjustable in some reasonable amount. MY reasonable amount, and I started the original Question, is circa 200Hz ... since that was the extra width I perceived I needed to wipe out the offending traces from my ears. -- Best regards, Bob KD7YZ http://www.qrz.com/db/KD7YZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Hi Bob, The K3's notch filter is designed to filter out CW signals. It's about 200 Hz wide, not much more than that. 73, matt On Mon, 23 Sep 2013 08:28:13 -0400, you wrote: Howdy K3' people: I am looking at some signals I'd like notched out. I am using WSJTx, a Data-Mode .On 30m there is some constant garbage I was trying to remove. However, it seems to be about 100Hz wider than the apparent notching being done, as seen on the Waterfall around 2000 of the WSJTx display. So, is there a hidden setting where I can make the Notch bout 400?? It seems to be effective to 300 . Matt Zilmer, W6NIA www.elecraft.com 831-763-4211 x129 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
I didn't word that quite right CW = continuous carrier. It's very good for SW BC carriers, but not intended for broader signals like power supply gudge. matt On Mon, 23 Sep 2013 06:23:20 -0700, you wrote: Hi Bob, The K3's notch filter is designed to filter out CW signals. It's about 200 Hz wide, not much more than that. 73, matt On Mon, 23 Sep 2013 08:28:13 -0400, you wrote: Howdy K3' people: I am looking at some signals I'd like notched out. I am using WSJTx, a Data-Mode .On 30m there is some constant garbage I was trying to remove. However, it seems to be about 100Hz wider than the apparent notching being done, as seen on the Waterfall around 2000 of the WSJTx display. So, is there a hidden setting where I can make the Notch bout 400?? It seems to be effective to 300 . Matt Zilmer, W6NIA www.elecraft.com 831-763-4211 x129 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Ideal to mask carriers used by some to tune up on the freq that you'r trying to listen to. 73 de David, M0XDF (K3 #174, P3 #108) -- The high minded man must care more for the truth than for what people think. -Aristotle, philosopher (384-322 BCE) On 23 Sep 2013, at 14:27, Matt Zilmer wrote: I didn't word that quite right CW = continuous carrier. It's very good for SW BC carriers, but not intended for broader signals like power supply gudge. matt On Mon, 23 Sep 2013 06:23:20 -0700, you wrote: Hi Bob, The K3's notch filter is designed to filter out CW signals. It's about 200 Hz wide, not much more than that. 73, matt On Mon, 23 Sep 2013 08:28:13 -0400, you wrote: Howdy K3' people: I am looking at some signals I'd like notched out. I am using WSJTx, a Data-Mode .On 30m there is some constant garbage I was trying to remove. However, it seems to be about 100Hz wider than the apparent notching being done, as seen on the Waterfall around 2000 of the WSJTx display. So, is there a hidden setting where I can make the Notch bout 400?? It seems to be effective to 300 . Matt Zilmer, W6NIA www.elecraft.com 831-763-4211 x129 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
On Monday Zilmer used a Straight-Key to send: -Original Comment--- I didn't word that quite right CW = continuous carrier. It's very good for SW BC carriers, but not intended for broader signals like power supply gudge. nah, ya got it right ... there's a bunch of PSK-like tones as well as a few spaced WSPR signals especially in the early morning. At that time, for me, and on a 300 foot DP, they are really annoyingly strong. I can neatly notch most, but the roughly 200Hz width would be neat if I could make it wider or narrower ... like a surgical removal of CW/Narrow-PSK modes/ WSPR was just wondering. My K3 does so many things, most of them I haven't discovered. Found nil in the manual; had to ask here just in case. -- Best regards, Bob KD7YZ http://www.qrz.com/db/KD7YZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
It also works wonders to filter out loud PSK31 signals that are overloading your audio A to D converter. Too bad auto notch doesn't work in this situation. (I'd go after the strongest signal in the DSP filter pass band.) Cheers - Bill, AE6JV - On 9/23/13 at 6:23 AM, ma...@elecraft.com (Matt Zilmer) wrote: The K3's notch filter is designed to filter out [continuous carrier] signals. It's about 200 Hz wide, not much more than that. - Bill Frantz| The first thing you need when | Periwinkle (408)356-8506 | using a perimeter defense is a | 16345 Englewood Ave www.pwpconsult.com | perimeter. | Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Instead of using a notch filter, how about narrowing the DSP filter width to select the signal that you want. The problem is that both solutions occur *after* the A/D converter in the radio! One wants to get rid of the big signal or the multitude of moderate signals before they saturate the ADC (or activate HAGC) in order to maintain maximum sensitivity for the weak signals. 73, ... Joe, W4TV On 9/23/2013 1:40 PM, Don Wilhelm wrote: Bob, Instead of using a notch filter, how about narrowing the DSP filter width to select the signal that you want. Look on the waterfall for the audio frequency of the signal of interest and adjust the SHIFT to that center frequency, then narrow the width to isolate that signal. It is much more effective in reducing the strong unwanted signals than attempting to notch them. 73, Don W3FPR On 9/23/2013 12:22 PM, KD7YZ Bob wrote: On Monday Zilmer used a Straight-Key to send: -Original Comment--- I didn't word that quite right CW = continuous carrier. It's very good for SW BC carriers, but not intended for broader signals like power supply gudge. nah, ya got it right ... there's a bunch of PSK-like tones as well as a few spaced WSPR signals especially in the early morning. At that time, for me, and on a 300 foot DP, they are really annoyingly strong. I can neatly notch most, but the roughly 200Hz width would be neat if I could make it wider or narrower ... like a surgical removal of CW/Narrow-PSK modes/ WSPR was just wondering. My K3 does so many things, most of them I haven't discovered. Found nil in the manual; had to ask here just in case. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Bob, Instead of using a notch filter, how about narrowing the DSP filter width to select the signal that you want. Look on the waterfall for the audio frequency of the signal of interest and adjust the SHIFT to that center frequency, then narrow the width to isolate that signal. It is much more effective in reducing the strong unwanted signals than attempting to notch them. 73, Don W3FPR On 9/23/2013 12:22 PM, KD7YZ Bob wrote: On Monday Zilmer used a Straight-Key to send: -Original Comment--- I didn't word that quite right CW = continuous carrier. It's very good for SW BC carriers, but not intended for broader signals like power supply gudge. nah, ya got it right ... there's a bunch of PSK-like tones as well as a few spaced WSPR signals especially in the early morning. At that time, for me, and on a 300 foot DP, they are really annoyingly strong. I can neatly notch most, but the roughly 200Hz width would be neat if I could make it wider or narrower ... like a surgical removal of CW/Narrow-PSK modes/ WSPR was just wondering. My K3 does so many things, most of them I haven't discovered. Found nil in the manual; had to ask here just in case. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
On Monday Wilhelm used a Straight-Key to send: -Original Comment--- Bob, Instead of using a notch filter, how about narrowing the DSP filter width to select the signal that you want. Hi Don. And notwithstanding what W4TV said, I am using the DSP, namely the Lo and the Hi, to truncate theends of whichever JT65/JT9 Band-Segment I am on. That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. So I start cutting off the ends, as needed, leaving a fairly orderly slice for JT65/JT9, depending on which CQ I am answering. Some places, or a place, can't remember at the moment, have plethora WSPR and PSK kinda in the middle. So I began using the Notch after asking around for ideas. -- Best regards, Bob KD7YZ http://www.qrz.com/db/KD7YZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Some places, or a place, can't remember at the moment, have plethora WSPR and PSK kinda in the middle. 30 meters. 73, ... Joe, W4TV On 9/23/2013 4:28 PM, KD7YZ Bob wrote: On Monday Wilhelm used a Straight-Key to send: -Original Comment--- Bob, Instead of using a notch filter, how about narrowing the DSP filter width to select the signal that you want. Hi Don. And notwithstanding what W4TV said, I am using the DSP, namely the Lo and the Hi, to truncate theends of whichever JT65/JT9 Band-Segment I am on. That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. So I start cutting off the ends, as needed, leaving a fairly orderly slice for JT65/JT9, depending on which CQ I am answering. Some places, or a place, can't remember at the moment, have plethora WSPR and PSK kinda in the middle. So I began using the Notch after asking around for ideas. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Where do I find the definitions of JTxx Territory? I operate RTTY only in a handful of contests, but I could be one of the encroachers. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org On 9/23/2013 1:28 PM, KD7YZ Bob wrote: That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
JT65A tends to be found at xx.076-xx.0785 and JT9 tends to be found at xx.0785-xx.080 on most HF bands (substitute 10.138, 18.102 and 24.917 for xx.076 on those bands). Note most RTTY collisions involve the RTTY folks who park on xx.080 Mark (FSK displaying mark frequency). Since space shifts down, the RTTY signal will chew up 300 Hz or more of the JT9 center of activity. The bigger problem is the WinLink (PACTOR) autobots that come up anywhere in xx.075-xx.080 without listening for *any* other activity. 73, ... Joe, W4TV On 9/23/2013 7:33 PM, Fred Jensen wrote: Where do I find the definitions of JTxx Territory? I operate RTTY only in a handful of contests, but I could be one of the encroachers. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org On 9/23/2013 1:28 PM, KD7YZ Bob wrote: That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Just wait until the ARRL proposal for a 2.1 kHz digital mode bandwidth in the CW/digital segments passes. Then we'll have autobots popping up that wipe out ten CW or narrow digital QSOs in one blow! On 9/23/2013 5:10 PM, Joe Subich, W4TV wrote: JT65A tends to be found at xx.076-xx.0785 and JT9 tends to be found at xx.0785-xx.080 on most HF bands (substitute 10.138, 18.102 and 24.917 for xx.076 on those bands). Note most RTTY collisions involve the RTTY folks who park on xx.080 Mark (FSK displaying mark frequency). Since space shifts down, the RTTY signal will chew up 300 Hz or more of the JT9 center of activity. The bigger problem is the WinLink (PACTOR) autobots that come up anywhere in xx.075-xx.080 without listening for *any* other activity. 73, ... Joe, W4TV On 9/23/2013 7:33 PM, Fred Jensen wrote: Where do I find the definitions of JTxx Territory? I operate RTTY only in a handful of contests, but I could be one of the encroachers. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org On 9/23/2013 1:28 PM, KD7YZ Bob wrote: That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Just wait until the ARRL proposal for a 2.1 kHz digital mode bandwidth in the CW/digital segments passes. 2.1 KHz bandwidth ... try 3 to 5 KHz! I'm waiting on the Commission to post the proposal for comments - then I will object to the unregulated bandwidth *and* propose that RTTY/DATA be allowed *in the _phone_ bands*. After all, even narrow digital QSOs are being squeezed badly on 80 meters and the WARC bands as it is. There is certainly no problem with frequency sharing between phone and data on six and two meters. 73, ... Joe, W4TV On 9/23/2013 9:35 PM, Vic K2VCO wrote: Just wait until the ARRL proposal for a 2.1 kHz digital mode bandwidth in the CW/digital segments passes. Then we'll have autobots popping up that wipe out ten CW or narrow digital QSOs in one blow! On 9/23/2013 5:10 PM, Joe Subich, W4TV wrote: JT65A tends to be found at xx.076-xx.0785 and JT9 tends to be found at xx.0785-xx.080 on most HF bands (substitute 10.138, 18.102 and 24.917 for xx.076 on those bands). Note most RTTY collisions involve the RTTY folks who park on xx.080 Mark (FSK displaying mark frequency). Since space shifts down, the RTTY signal will chew up 300 Hz or more of the JT9 center of activity. The bigger problem is the WinLink (PACTOR) autobots that come up anywhere in xx.075-xx.080 without listening for *any* other activity. 73, ... Joe, W4TV On 9/23/2013 7:33 PM, Fred Jensen wrote: Where do I find the definitions of JTxx Territory? I operate RTTY only in a handful of contests, but I could be one of the encroachers. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org On 9/23/2013 1:28 PM, KD7YZ Bob wrote: That I do because the RTTY people have a horrible tendency to get right into the edges of what they perceive is JT65 territory. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
I was under the impression that CW (and Digital) were legal in the phone bands, not that I've ever tried them there. The problem isn't bandwidth as much as just plain poor operating practice. Automated stations should not be exempt from the rules, or common courtesy. 73 -- Lynn On 9/23/2013 6:53 PM, Joe Subich, W4TV wrote: I'm waiting on the Commission to post the proposal for comments - then I will object to the unregulated bandwidth *and* propose that RTTY/DATA be allowed *in the _phone_ bands*. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
In the US, CW is legal in all frequencies of all bands except 60M. For most HF bands, digital is only legal in the lower part of the bands -- AKA the CW portion. On 9/23/13 at 7:51 PM, k...@coldrockshotbrooms.com (Lynn W. Taylor, WB6UUT) wrote: I was under the impression that CW (and Digital) were legal in the phone bands, not that I've ever tried them there. --- Bill Frantz|The nice thing about standards| Periwinkle (408)356-8506 |is there are so many to choose| 16345 Englewood Ave www.pwpconsult.com |from. - Andrew Tanenbaum| Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
On 9/23/2013 7:58 PM, Bill Frantz wrote: In the US, CW is legal in all frequencies of all bands except 60M. Actually, CW is legal on 60m, you just have to center your signal in the Channel. So is PSK, but not what we know as RTTY, despite what the rule language says, at least yet. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Actually, since March of last year, CW, RTTY and data are now allowed on the 60 meter frequencies according to the latest reports I've seen from the ARRL and FCC. The emissions must adhere to the 2.8 kHz bandwidth allowed. The ERP was raised from 50 to 100 watts at the same time. And *no* automated stations are allowed. A control operator *must* be present at all times. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Frantz Sent: Monday, September 23, 2013 7:59 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount? In the US, CW is legal in all frequencies of all bands except 60M. For most HF bands, digital is only legal in the lower part of the bands -- AKA the CW portion. On 9/23/13 at 7:51 PM, k...@coldrockshotbrooms.com (Lynn W. Taylor, WB6UUT) wrote: I was under the impression that CW (and Digital) were legal in the phone bands, not that I've ever tried them there. --- Bill Frantz|The nice thing about standards| Periwinkle (408)356-8506 |is there are so many to choose| 16345 Englewood Ave www.pwpconsult.com |from. - Andrew Tanenbaum| Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount
I'm curious, what do you consider a reasonable amount? On Mon, Sep 23, 2013 at 9:29 PM, Edward Dickinson III softb...@windstream.net wrote: The width of the K3 Notch-Filter is not adjustable in some reasonable amount. 73. Dick - KA5KKT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Is Width of Notch-Filter adjustable in some reasonable amount?
Folks, we are drifting OT. Let's end this thread at this time. 73, Eric List Moderator elecraft.com --- Sent from my iPhone 5S On Sep 23, 2013, at 8:43 PM, Ron D'Eau Claire r...@cobi.biz wrote: Actually, since March of last year, CW, RTTY and data are now allowed on the 60 meter frequencies according to the latest reports I've seen from the ARRL and FCC. The emissions must adhere to the 2.8 kHz bandwidth allowed. ... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
