Re: [Elecraft] Elecraft SP3 External Speaker details

If they did a stand alone UHF/VHF I'd suggest it have dual receivers, cross band tx/rx capability and VFO tracking based on Doppler built in for SAT work. -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Lowman Sent: Tuesday, September 15, 2015

Re: [Elecraft] Elecraft SP3 External Speaker details

I still believe it may be possible with the K3S, KRX3 and transceivers to do Full cross band duplex. I'll look more closely after my rig is built and on the air. Makes for an expensive stand alone UHF/VHF rig tho unless you want HF too. But then it's probably overkill just to work SATs. I'll

Re: [Elecraft] Analog vs. Digital Front Ends

Is it possible your rig has AGC that's keeping strong signals down rather than the rejection/selection capabilities of your receiver? Just asking.. I don't know the answer. -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Wednesday,

Re: [Elecraft] Analog vs. Digital Front Ends

On 9/16/2015 12:43 AM, Alan wrote: So how long before ADC technology catches up to the K3? If Moore's law applied (doubling of performance every couple years) it wouldn't be long. Unfortunately Moore's law applies mainly to digital circuitry but the key parts of an ADC are analog (the "A" in

Re: [Elecraft] Elecraft SP3 External Speaker details

I’d be interested in that spec too! Built-in soundcard for digital modes (with one USB connection for it and rig control) would be nice as well. Regards Andy, G8TQH > On 16 Sep 2015, at 12:06, Jerry Moore wrote: > > If they did a stand alone UHF/VHF I'd suggest it

[Elecraft] On VHF & UHF radios

I don't view there are many serious VHF and UHF operators today, i.e. sufficient to warrant a high performance radio. Most are repeater users. Seems that a $39 radio model has been proven to be satisfactory to most. The SAT users do require some unique applications to cross band, split

[Elecraft] Analog vs. Digital Front Ends

Sorry, I'm not buying that direct sampling front ends are as prone to overload as many of the posts are suggesting, especially on 20M and higher. During the past 3 years, I've worked one CQWW and one ARRLDX contest from the Northeast with a SteppIR yagi feeding an ANAN-100D with 0dB attenuation

Re: [Elecraft] Analog vs. Digital Front Ends

Look at the A/D converter as a chip tool that could potentially be used in ham RX design. If one wanted a ham band RX using an A/D front end, certainly one would add front end filters. Of course, that would only help solve the problem with out of band signals. Handling the vector sum of

[Elecraft] Test IC-756 Pro II

The Icom transceiver has been spoken for - - to someone not reading this list - - Cheers, Jan K1ND __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Analog vs. Digital Front Ends

Yes but it still has the equivalent. It's just integrated rather than being separate. That doesn't make it better or worse, it just lowers the component count. -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Wednesday, September

Re: [Elecraft] Analog vs. Digital Front Ends

Barry says: >During the past 3 years, I've worked one CQWW and one ARRLDX > contest from the Northeast with a SteppIR yagi feeding an ANAN-100D with > 0dB attenuation and never experienced overload during the weekends. And Joe presented a very useful tabulation showing how signals combine. One

Re: [Elecraft] Analog vs. Digital Front Ends

There's no pre-ADC hardware AGC at work in the radio like there is in the K3 and Orion. Barry N1EU On Wed, Sep 16, 2015 at 8:37 AM, Jerry Moore wrote: > Is it possible your rig has AGC that's keeping strong signals down rather > than the rejection/selection capabilities

Re: [Elecraft] Analog vs. Digital Front Ends

All the serious direct sampling ham xcvrs have single band pass filters ahead of the ADC for ham band reception so that's not an issue. Barry N1EU On Wed, Sep 16, 2015 at 9:13 AM, Rick Stealey wrote: > Barry says: > >During the past 3 years, I've worked one CQWW and one

[Elecraft] Warm greetings extended overseas through Elecraft mailing list

Just wanted to pass a note that I returned, with my KX3 intact, from a wonderful trip to Italy for two weeks thanks to advise and counsel through this list serve.  Operating from a hillside villa overlooking the town of Todi was quite an experience. More remarkable, I received an invitation

Re: [Elecraft] Analog vs. Digital Front Ends

Re GPS: Hardly a "low" orbit, Brian: 'GPS satellites fly in medium Earth orbit (MEO) at an altitude of *approximately 20,200 km* (*12,550 miles*). Each satellite circles the Earth twice a day.' Phil W7OX On 9/16/15 5:54 AM, brian wrote: Look at the A/D converter as a chip tool that could

Re: [Elecraft] Analog vs. Digital Front Ends

On 9/16/2015 9:16 AM, Barry N1EU wrote: All the serious direct sampling ham xcvrs have single band pass filters ahead of the ADC for ham band reception so that's not an issue. Not true - the Flex-6300 has no preselectors. Even if the transceiver includes preselectors (bandpass filters),

Re: [Elecraft] Analog vs. Digital Front Ends

Interesting. The government is a big driver for wide range receive capabilities / signal analysis, but cost is not the main driver there. Jim W6AIM Original message From: Lyle Johnson Date: 9/16/2015 9:40 AM (GMT-06:00) To: elecraft@mailman.qth.net

[Elecraft] Station setup

I too am beginning to build a new operating desk for use with a K line and several other radios. Woodworking is my other hobby so the desk will be a rather involved and lengthy project. Solid woods from one inch to three inch thickness will insure strength throughout. The main desktop will be

Re: [Elecraft] Analog vs. Digital Front Ends

One has to ask, "Which large consumer of high dynamic range, high-speed sampling ADCs is requiring more performance than presently exists? What drove the market for the present ones?" The driver for the current generation, based on limited information, is the technical requirements for

Re: [Elecraft] Analog vs. Digital Front Ends

You're right about the 6300 Joe. I don't consider the Flex 6300 as "serious" in terms of a serious contesting radio. I would expect a serious contester to go with the Flex 6500/6700 or ANAN 100 or 200 series. On a crowded band being pounded by strong signals, the direct sampling ANAN rx sounds

Re: [Elecraft] Analog vs. Digital Front Ends

I'm having a hard time understanding where the frequency selectivity of a piece of wire comes from. On 9/16/2015 6:13 AM, Rick Stealey wrote: And Joe presented a very useful tabulation showing how signals combine. One thing that we should keep in mind is that single band antennas like

Re: [Elecraft] Analog vs. Digital Front Ends

In the late 60's W4BVV put a full size 3 el 40m yagi on a 70 foot boom up 150 feet. This would qualify as a passive front end. Pointed at Europe, at the shack end of coax, peak to peak RF on a scope would measure five to ten volts when the band was open. What will today's direct samplers do with

Re: [Elecraft] Station setup

I want to see some pics of this when it's finished. Ever thought of going into the furniture manufacturing business? (Anyone else here remember the Design Industries "furniture-styled communications console" and "'wife-approved' communications desk" from back in the 1960s?) 73, Al On Wed

Re: [Elecraft] K3 / K3S Station setup question

At my house we have a three car garage. We turned the bay closest to the tower into a 10X15 radio room by filling in the floor with concrete, tiling the floor to match the house and adding a new wall 8 feet inside the roll up door. Add HVAC duct off the whole house system, run a 240 VAC circuit

Re: [Elecraft] KPA500 Connection to K3S

Accessory plug? -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Amateur Radio Operator N5GE Sent: Wednesday, September 16, 2015 12:10 PM To: Elecraft Reflector Subject: [Elecraft] KPA500 Connection to K3S Now that the K3S has no RS232 connectors,

Re: [Elecraft] Station setup

If you cannot leave room behind the desk and you are designing the desk, consider putting the desk pedestals on appliance rollers so you can pull the desk away from the wall to service the back of the equipment. That is how mine will be if I ever get it finished. 73, Don W3FPR On 9/16/2015

[Elecraft] KPA500 Connection to K3S

Now that the K3S has no RS232 connectors, is there any change in the way the KPA500 connects to the K3S? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] K3: reverse 12 volt supply

Thanks for all the replies with sources to find stranded, paired wire. I saved them all. My sources suddenly quit. I feared the wire mfg's may have gone off-shore, and I might have to use pastel colors (tic). And finally, FWIW, it seems someone is using my callsign. If you Google it, you

Re: [Elecraft] KPA500 Connection to K3S

Not if you use the AUX bus On 9/16/2015 9:09 AM, Amateur Radio Operator N5GE wrote: Now that the K3S has no RS232 connectors, is there any change in the way the KPA500 connects to the K3S? __ Elecraft mailing list Home:

Re: [Elecraft] K3 / K3S Station setup question

Hi All, My objective has always been (but rarely achieved) to just have a well suited part of the house where my station could be housed. You would think, considering the fact that most of the houses we have owned were fairly decent in size, that there would be such a place therein. However,

Re: [Elecraft] Station setup

If you have the room, leave at least 2' behind the desk ... remember all the wires you'll have behind that equipment! See K9CT'S website for good reference. Have fun ... 73 Dwight NS9I This desk will go in a room corner tight against the walls with a window to the left of this location. A

Re: [Elecraft] Station setup

When I was faced with the need for more room - and access - I went "mobile". Here is the description of my current operating desk in the October 2013 issue of the PVRC newsletter: http://pvrc.org/Newsletters/oct13.pdf I'm a metalworker more than a woodworker... ;-) 73, geo - n4ua On Wed, Sep

Re: [Elecraft] Elecraft SP3 External Speaker details

I've made no decision yet on the purchase. However I note with interest that the email title says "Speaker details". But this thread has had none other than Wayne's statement of SPL. I'm curious as to the response curve. Is it flat or Communications? I'd be looking for flat as in my

Re: [Elecraft] KPA500 Connection to K3S

No. The KPA500 never used RS-232 to connect to the K3 or K3S. It uses the AUX I/O connection. - Jack, W6FB > On Sep 16, 2015, at 9:54 AM, ae...@carolinaheli.com wrote: > > Accessory plug? > > -Original Message- > From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of >

Re: [Elecraft] Station setup

Unless there's a real space issue, forego the wheels ans just put the desk a couple of feet from the wall. KISS 8-{o}. 73, Mike NF4L > On Sep 16, 2015, at 1:15 PM, Jim Brown wrote: > > On Wed,9/16/2015 7:50 AM, Dennis wrote: >> This desk will go in a room

Re: [Elecraft] Analog vs. Digital Front Ends

If I'm using my 40 m dipole and go to 80 meters the signals will jump up SIGNIFICANTLY if I switch to my 80 meter antenna. Several S units. Same on 20. So, if instead of a single band 40 m dipole I had a 80/40 fan dipole, wouldn't an SDR have to deal with stronger signals in total? Same as if

Re: [Elecraft] station setup,

For what it’s worth, check out my setup on QRZ. Carl Yaffey K8NU Recording studio. cyaffeyno_s...@gmail.com 614 268 6353, Columbus OH http://www.carl-yaffey.com http://www.grassahol.com http://www.bluesswing.com __ Elecraft

Re: [Elecraft] Analog vs. Digital Front Ends

On 09/16/2015 05:25 AM, Joe Subich, W4TV wrote: ... N "S" -- 1 S9 +63 dB (-10 dBm) 3 S9 +53 dB 10 S9 +43 dB 32 S9 +33 dB 100 S9 +23 dB 316 S9 +13 dB ~450 S9 +10 dB 1000 S9 +3 dB

Re: [Elecraft] Elecraft SP3 External Speaker details

Hi Bob, Here's an expanded list of specs on the SP3: Weight: 4 lb, 8.4 oz ( 2.5 kg) Speaker Size: 3” x 5” (77 x 127 mm) Speaker Impedance: 4 ohms (note: the K3's internal speaker is also 4 ohms) Magnet Type: Neodymium Power Handling Capability: 15 W Frequency Response:

[Elecraft] Digital Modes and K3S

I had this working, but now can’t figure out how I did it, cuz it’s not working again. Running Windows 7, N1MM+, K3S connected via USB. CW and SSB work fine, including macros. On RTTY (MMTTY), if I hit any macro key, the radio keys up (PTT), but there is no diddling. At that time, I see the

Re: [Elecraft] Elecraft SP3 External Speaker details

Hi Keith, This all seemed pretty simple on our end: - We've been asked a gazillion times for a matching speaker - We worked with a speaker design expert to do the acoustic design, adding a versatile mono/stereo A/B switch for station integration - We kept the price as low as we possible

Re: [Elecraft] K2 mic compatibility?

Frank, Unfortunately, the mic plug wiring is different than that for the MH2. Can I assume that it is one of Heil's microphones that use an adapter? If so, replace the adapter with the one used for Kenwood (red band). Since it is an Icom microphone, it likely needs bias, so the resistor added

Re: [Elecraft] Station setup

Dennis, My desktop height is 27”, a couple of inches lower than standard. It is an L-shaped Ikea work table, 30" x 60” for the main top, with some height adjustability. Personally, I find that the lower table top height helps me when typing, particularly, which I do all the time with my

Re: [Elecraft] Analog vs. Digital Front Ends

You're talking about matching, not any frequency selectivity of the wire. Thousands of guys swear by a so-called G5RV and 43' verticals (I'm not one of them), antennas that aren't resonant on any ham band where they're used. There is absolutely no requirement that a wire be resonant to

Re: [Elecraft] K3 / K3S Station setup question

When we moved to our current home in 2006, my ham stations and outside antenna took a primary consideration in even deciding on which property to choose. My nine sled dogs were the other primary consideration. We moved from a 5ac lot to 1-3/4ac of which about 1ac is not woods. But moving out

Re: [Elecraft] K3: reverse 12 volt supply

I checked the rolls of wire at the shop. I find I have two different ones: Belden # 8720 - 14 AWG stranded (19x27) TC conductors, polyethylene insulation, twisted pair, overall Beldfoil® shield (100% coverage), 16 AWG stranded TC drain wire, PVC jacket. Belden # 8718 - 12 AWG stranded

Re: [Elecraft] Digital Modes and K3S

Are you in USB mode or TX Data mode on the radio? I use TX Data very successfully. And when I work AFSK I do switch to ALT mode which would be LSB mode in TX Data. Otherwise, TX Data us a USB mode. The nice thing about using TX Data mode is that it negates the COMP and EQ values. When

Re: [Elecraft] Analog vs. Digital Front Ends

On 9/16/2015 2:02 PM, Alan wrote: The amplitude distribution of a large number of signals of different frequencies and amplitudes closely approximates Gaussian noise (see note 1 below). As a rule of thumb the peak to RMS voltage ratio of Gaussian noise is about 5 or 6. Of course, theoretically

Re: [Elecraft] Analog vs. Digital Front Ends

As a side note on this topic, there is a company in Tennessee that builds some really nice specialty receivers for various Governments. {notice I stated Governments, as in plural}.They also have built or build ham radios such as the Orion, Orion II, Omni VII, Eagle, Argonaut VI just to

Re: [Elecraft] K3: reverse 12 volt supply

Here is where I got my color coded heavy wire.  Marine Wire | Marine Electrical | West Marine |   | |   |   |   |   |   | | Marine Wire | Marine Electrical | West MarineEmail Us Shipping Information International Shopping Returns & Exchanges Customer Service Call (800) 262-8464Monday-Friday,

Re: [Elecraft] Analog vs. Digital Front Ends

This is really good information, Alan, and makes sense. Regarding the approximation to Gaussian noise... given that most signals on a crowded band during a contest are highly compressed (their peak-to-average ratios are much smaller) would this make matters better or worse for the ADC, or no

Re: [Elecraft] Analog vs. Digital Front Ends

Hi Al, The Central Limit Theorem says that it doesn't matter what the distribution function is for each individual signal. As long as there are a lot of them, the total has a Gaussian distribution. In fact, it doesn't take very many to get quite close to Gaussian - something like 4 to 6 is

[Elecraft] K3 still for sale

K3 #4519 is still for sale. It is configured as follows: -100 watts -ATU -General Coverage RX module -2.1 Khz 8 pole filter -2.8 Khz 8 pole filter -400 Hz 8 pole filter - 6 Khz 8 pole filter -13 Khz FM B/W filter -TCXO -KXV3A Rx Ant, IF Out & Xverter interface -PR6-10 Preamp This configuration

Re: [Elecraft] On VHF & UHF radios

I'm using external transverters for 2M, 70cm and 23cm, those being DownEast Microwave, driving a IPA to the PA. Yes, I think working EME is considered as weak signal work. Plus I use a mast mounted preamps with separate TX and RX lines. Makes for switching and sequencing to be less complex.

Re: [Elecraft] DXE Receiver Guard

Ian, That all depends. There is no one answer, because it depends on how much energy from the other transmitters is going to be picked up by your RX antenna. If it enough to operate the COR (you will hear the relay clicking), then you should provide some protection. Providing that protection

[Elecraft] DXE Receiver Guard

I don't anticipate using a RX antenna any time soon on my K3S but I will use it at Field Day with 5-4 other 100W transmitters. Any reason to use a DXE-RG-5000 front-end protection device across the RX-IN and RX-out ports? Or is there sufficient internal protection? 73, Ian N8IK

Re: [Elecraft] Analog vs. Digital Front Ends

On 09/16/2015 01:15 PM, Joe Subich, W4TV wrote: On 9/16/2015 2:02 PM, Alan wrote: The amplitude distribution of a large number of signals of different frequencies and amplitudes closely approximates Gaussian noise (see note 1 below). As a rule of thumb the peak to RMS voltage ratio of Gaussian

Re: [Elecraft] On VHF & UHF radios

That could be, Bob. I should have phrased my question more specifically. My intended use for such a transceiver would be weak-signal work. I had the 2m option for the K3 but, with its low power output, I sold it and bought a Kenwood TS-2000X to be dedicated to VHF/UHF operation. However, this

[Elecraft] KPA500 (S/N 82) Power Out Problem....

Last night, I turned on my K3/KAT500/KPA500 as normal and upon CW key up, all the Power (W) LEDs lit up across the scale. The Fault LED was not lit. The VSWR was good. The KPA500 reads 640 watts ?? Pout with nominal drive power (15 watts) from the K3. The CUR is not reading any current. This

[Elecraft] Fw: Re: On VHF & UHF radios

Subject: Re: [Elecraft] On VHF & UHF radios I added the 2 meter option for the KX3 and I was impressed with the ability to handle out of band pagers etc. I live next to a hospital and there , usually dirty pagers etx cause problems with other 144 gear I have but the KX3 combo really handles

Re: [Elecraft] KPA500 (S/N 82) Power Out Problem....

Did you mistakenly turn on demo mode in the menu? Eric elecraft.com _..._ > On Sep 16, 2015, at 5:14 PM, W5RDW wrote: > > Last night, I turned on my K3/KAT500/KPA500 as normal and upon CW key up, all > the Power (W) LEDs lit up across the scale. The Fault LED was not

[Elecraft] Ham Shack Arrangements - just a little OT

This discussion of shack and desk arrangements inspired me to look further into it . . . Well, not too much further. I simply went to Google Images and entered ³Amateur Radio Stations.² Some Elecraft-centered setups appeared, as one might imagine. But here¹s one that just blew me away:

Re: [Elecraft] Station setup

I wish I had the woodworking skills that some of you have. Truth be known, I barely squeaked a "C" in woodshop class in 7th grade. 73 de Jim - AD6CW On 9/16/2015 7:50 AM, Dennis wrote: I too am beginning to build a new operating desk for use with a K line and several other radios.

Re: [Elecraft] Ham Shack Arrangements - just a little OT

W9EVT attended the W9DXCC convention in Chicago this past weekend. On 9/16/2015 10:10 PM, Dauer, Edward wrote: This discussion of shack and desk arrangements inspired me to look further into it . . . Well, not too much further. I simply went to Google Images and entered ³Amateur Radio

Re: [Elecraft] Digital Modes and K3S

On Wed,9/16/2015 2:20 PM, Bob McGraw - K4TAX wrote: Are you in USB mode or TX Data mode on the radio? Rich is talking about RTTY, which the K3 transmits LSB. On Elecraft radios, use AFSK-A or FSK-D for RTTY, which, I believe, also bypasses the COMP, and sets EQ to a fixed high pass filter

Re: [Elecraft] Digital Modes and K3S

I had a few similar problems when starting up my new Win7Pro PC today. Check to make sure that the Mark frequency is the same on the K3 and MMTTY. The defaults are not the same. And make sure that the TX Mark frequency is the same as the RX frequency. If you are using VOX make sure that it is on

Re: [Elecraft] KPA500 (S/N 82) Power Out Problem....

>Did you mistakenly turn on demo mode in the menu? >Eric >elecraft.com Yep, sure did and that fixed it! Many thanks, Eric! Now, a good nights sleep! :) - Roger W5RDW -- View this message in context:

[Elecraft] WTB KDVR3

Looking for a KDVR3 for one of my K3's. Reply direct to QRZ.com address. Thanks Mike W9RE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] On VHF & UHF radios

On Wed,9/16/2015 4:52 PM, Jim Lowman wrote: I had the 2m option for the K3 but, with its low power output, I sold it and bought a Kenwood TS-2000X to be dedicated to VHF/UHF operation. That was a bad move. Check the specs on the TS2000X. The K3 has has far better RX specs, and is probably

Re: [Elecraft] Digital Modes and K3S

On Wed,9/16/2015 8:45 PM, Steve Lund wrote: Check to make sure that the Mark frequency is the same on the K3 and MMTTY. The defaults are not the same. And make sure that the TX Mark frequency is the same as the RX frequency. YES! That's a BIG one. If the K3 tones are not the same as the MMTTY

Re: [Elecraft] Elecraft SP3 External Speaker details

I'm guessing that Eric is looking at Wayne, OR, Wayne is looking at Eric right now and saying "SEE.I told you so". ;o) Terry W0FM -Original Message- From: Alan [mailto:n...@sonic.net] Sent: Tuesday, September 15, 2015 10:06 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft]

[Elecraft] K3S - The BBT just left a present on my front porch

And thus the journey begins... :) Jerry Moore AE4PB, K3S SN- inside the box __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

Re: [Elecraft] Station setup

On Wed,9/16/2015 7:50 AM, Dennis wrote: This desk will go in a room corner tight against the walls with a window to the left of this location. Make sure that it moves, so that you can get behind it to hook up gear. If you can't get behind it, hookups are a PITA, and wiring can quickly

Re: [Elecraft] Analog vs. Digital Front Ends

http://www.radio-electronics.com/info/antennas/basics/resonance.php BOB k3djc On Wed, 16 Sep 2015 08:21:03 -0700 "Wes (N7WS)" writes: > I'm having a hard time understanding where the frequency selectivity > of a piece > of wire comes from. > > On 9/16/2015 6:13 AM, Rick

Re: [Elecraft] Analog vs. Digital Front Ends

On Wed,9/16/2015 7:38 AM, Lyle Johnson wrote: One has to ask, "Which large consumer of high dynamic range, high-speed sampling ADCs is requiring more performance than presently exists? What drove the market for the present ones?" Exactly right. Back in the '90s, innovative designers of

[Elecraft] K2 mic compatibility?

Hi folks, I have just been handed a Heil mic wired for 8 pin Icom. Anyone know if the Icom 8pin is pin for pin compatible with a K2 that is wired for an MH-2? Not that I need another mic as I am a CW guy but… I have been on SSB since Don aligned it and was wondering if I can “just plug it