Re: [Elecraft] Elecraft Digest, Vol 164, Issue 13

I just received mine. It was ordered nov 27th and arrived today in CA. I never received anything other than an email receipt too. With Xmas mailings going on give it 3 wks then contact them if needed. Mike KF6KXG Sent from my iPhone > On Dec 14, 2017, at 2:42 PM,

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

You said, "In my opinion based on inspection of the schematic, the issue resides in the fet post-filter amplifier that is controlled by the "hardware" AGC (and manual "RF" gain control)." You were making a relationship between hardware AGC and the loose spec of the FET in question. By saying

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

I don't think I said that.  I imagine the onset of hardware AGC is determined elsewhere.  What I am saying is that the dB/V gain change is non-linear and different from device to device.  I assumed, mistakenly it appears, that the bias voltage to the device was tailored via a lookup table to

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

Isn't that answered by Lyle's point #10? 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Al Lorona Sent: Thursday, December 14, 2017 7:02 PM To: donw...@embarqmail.com; elecraft@mailman.qth.net Subject: Re:

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

Wes stated that there's a component in the AGC circuit that changes the onset of hardware AGC due to component tolerances. I suggested putting that theory to the test by actually measuring it. Al W6LX __ Elecraft mailing list Home:

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

There are several things going on here. 1) The "hardware AGC" is derived at the 15 kHz IF and is designed to prevent overdrive to the DSP's IF Analog-to-Digital Converter (ADC).  It also serves to prevent the 15 kHz IF amplifier from being driven into non-linear operation. 2) The "hardware

[Elecraft] FS: K3 RemoteRig from Elecraft

The RemoteRig set has been sold - pending payment Many thanks to all, 73 Jim - W4RKS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] KPA1500 First RF Review

I have no 30M power limitations in Canada. It is just another ham band and treated as such. Mike va3mw On Thu, Dec 14, 2017 at 7:31 PM, David Gilbert wrote: > > > And it works on 30m as well. > > I wonder when the last time the FCC busted anyone for excess power,

Re: [Elecraft] KPA1500 First RF Review

And it works on 30m as well. I wonder when the last time the FCC busted anyone for excess power, though. Dave   AB7E On 12/14/2017 3:42 PM, John Harper wrote: Here's your 3500 watt amp, listing Elecraft compatibility: http://www.kojinsha.jp/kl-1en/ Only $10k and possibly a visit from the

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

Al, My understanding of the hardware AGC is that it is fixed and is not dependent on the menu AGC parameters. The AGC THR and SLP are strictly DSP parameters. The Hardware AGC is there only to protect the ADC from overload due to strong signals. There may some variation in the exact

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

This would be easy to test. Normally, 'hardware AGC' kicks in at an input signal level of -46 dBm or so. This point is essentially independent of the AGC THR and SLP settings. See if your K3 varies from this data point anomalously. Al W6LX __ In my

Re: [Elecraft] KPA1500 First RF Review

Should do more than 3500W. On 12/14/2017 3:42 PM, John Harper wrote: Here's your 3500 watt amp, listing Elecraft compatibility: http://www.kojinsha.jp/kl-1en/ Only $10k and possibly a visit from the FCC! John AE5X https://ae5x.blogspot.com What! 3500 watts out?!?! How is that possible?

[Elecraft] KPA1500 First RF Review

Here's your 3500 watt amp, listing Elecraft compatibility: http://www.kojinsha.jp/kl-1en/ Only $10k and possibly a visit from the FCC! John AE5X https://ae5x.blogspot.com >What! 3500 watts out?!?! How is that possible? __ Elecraft

Re: [Elecraft] K3: 2 meter SSB/CW Capability Questions

Thanks for the comments I got and answers to my question (below). I will probably go with the K144XV plus reference lock board but will wait until it is warmer weather to get my 2-meter antenna up. 73, phil, K7PEH > On Dec 13, 2017, at 5:50 PM, Phil Hystad wrote: > > I

Re: [Elecraft] KPA1500 First RF Review

Well I told Laura (KF4CXO) that I was getting her something special and that it was so quiet she wouldn't even know what I got her. I'm working FT8 as we speak on 30 meters and trying to read emails at the same time and not laugh to much. Ed... AB4IQ -Original Message- From:

Re: [Elecraft] KPA1500 First RF Review

Right, Lou. You’re also getting a KX9 in your stocking. And your wife gets the complimentary purse unicorn. 73.5, Wayne N6KR > On Dec 14, 2017, at 1:36 PM, W0FK wrote: > > I received my KPA1500 late yesterday. Contrary to pronouncements on the forum > by Elecraft,

[Elecraft] KPA1500 First RF Review

I received my KPA1500 late yesterday. Contrary to pronouncements on the forum by Elecraft, they’re ready to ship. Since I was first to order the amp and sent in “something special” to Eric and Wayne, I got mine a week before the established release to the general ham populace. Sorry guys, looks

[Elecraft] FS: K3 RemoteRig from Elecraft

I have a like-new RemoteRig set that I am not going to use. Comes with cable set for remoting K3 to K3. RR-1256 SET was $499.95 from Elecraft RRK3CBL cable set was $49.95 RRMTCBL cable set was $49.95 Total cost was $599.75 Asking $400 shipped CONUS Contact me direct at w4rks73 at gmail dot

Re: [Elecraft] K2 Knob

Mike, Which knob do you have? There are two shaft diameters. The one for the original encoder is smaller than the one for the new encoder (with a 1/4 inch shaft). The new encoder will accept the VFO knob for the KX3, and that is what is shipping with the new K2 Kits, but it needs 3 stacked

[Elecraft] KPA500 - fan noise

Interesting post from Wayne regarding the low fan noise from the KPA1500. So, I have to ask about fan noise and the KPA500. Background: I run my KPA500 all the time - my K3 is a 500 Watt XCVR. From time to time, in particular during AM operation, the fan comes on and moves right on up in the

[Elecraft] K2 Knob

Looking for a VFO knob for my K2. Does someone have an extra they want to sell me? Mike, W4UM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] FA-VA4

Got mine yesterday,  fast build.It works..Bill Sent from my Sprint Samsung Galaxy S® 6. Original message From: Don Wilhelm Date: 12/14/17 1:43 PM (GMT-05:00) To: Art , elecraft@mailman.qth.net Subject: Re: [Elecraft] FA-VA4 I ordered

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

Personally, I wouldn't go so far as to say the radio performs correctly. Without writing a long history, let's just say that I discovered this RF gain issue 8 or 9 years ago.  I demonstrated it to an Elecraft engineer in my shack who had brought along his fully up to date K3 which we compared. 

Re: [Elecraft] FA-VA4

I ordered one Dec 1 and it came in only yesterday. I am in North Carolina. 73, Don W3FPR On 12/14/2017 10:36 AM, Art via Elecraft wrote: After reading several posts here about this antenna analyzer kit, I decided to order one on Dec. 2. Got the confirmation immediately, but never received

[Elecraft] K3 / RF gain - S meter issue - Similar issue

More info. Thanks to Brian, K3KO, some hints were given to check my particular issue.  Thanks also to Bob, K4TAX. Since I have no intention of opening my radio (as the radio does work fine), I have discovered something of interest and a potential cause for the symptom I'm seeing. As I

Re: [Elecraft] K3 / RF gain - S meter issue

Thanks for the responses – here are the answers to the questions and suggestions and a new piece of DATA associated with selecting the SUB-RX. 1. I checked the S-Meter configs for both of my K3s – they are exactly the same. a. SMTR OF 016 b. SMTR SC 016 c. SMTR PK

Re: [Elecraft] FA-VA4

I ordered the FA-VA4 on Nov 20th and it arrived in great condition on Dec 8th. My order was shipped on Nov 24th but I did not receive any shipping notice so I sent an inquiry which they promptly replied to with tracking number. I have not read anything negative about the analyzer, only very

Re: [Elecraft] KPA1500 (!)

'twas said, "...And thanks to the latest changes, hunt-and-pounce ops, like me, will almost never hear a fan come on." (etc.) GREAT 73, Roy K6XK __ Elecraft mailing list Home:

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

My concern would be "does the S meter indicate correctly?" Thus with 50 uV applied to the antenna input it should read S-9, and with 0.78 uV applied it should read S-3, and with 5000 uV applied it should read S-9 +40 dB.    I've checked my K3S at these and other values and I'm confident that

Re: [Elecraft] FA-VA4

Art, I ordered one back in October and it arrived about 3 weeks later. Now I need to actually build it! > On Dec 14, 2017, at 9:36 AM, Art via Elecraft > wrote: > > After reading several posts here about this antenna analyzer kit, I decided > to order one on Dec.

Re: [Elecraft] KPA1500

> ROBERT MUELLER wrote: > > Why don't we tell Wayne it is time to stop tweaking. You guessed it, Bob; you can blame me for the final tweaks. I do most of my operating with small radios that have no fans, so I’ve been obsessing over the KPA1500’s acoustics. As mentioned

Re: [Elecraft] Amplifiers

Maybe I dozed off during that nearly three hour fireside chat but I came away disappointed.  I wanted some meat about things like IMD, an issue Elecraft has plenty of, device selection, biasing, power control, matching and so forth. Wes  N7WS On 12/14/2017 9:06 AM, Brian Heinitz wrote: With

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

I have a similar - but different! - issue on one of my Elecraft's. I own both a K3 and a K3s.  Both are configured equally with the K3 having been upgraded to the highest level to achieve near K3s equivalency. My K3s RF Gain control works exactly as expected, i.e. as the control is rotated

[Elecraft] Amplifiers

With all of the anticipation about the KPA 1500, a timely and informative discussion of that product and amplifiers in general can be heard on episode 38 of the Workbench podcast at Ham Radio 360. David Shoaf KG6IRW from Elecraft is interviewed by Workbench podcast hosts (and Elecraft product

[Elecraft] Fwd: [PVRC] Voice waveform asymmetry limits your loudness

Nov/Dec 2017 QEX has a very nice article by W4ENE on how typical male voice waveform asymmetries will cause peak-riding ALC to unnecessarily limit average power even through compression and other technologies. I myself had noticed that my voice on an oscilloscope or as seen in Audacity, has these

Re: [Elecraft] FA-VA4

After reading several posts here about this antenna analyzer kit, I decided to order one on Dec. 2. Got the confirmation immediately, but never received any shipping notice or the product. I have sent two inquires that have gone unanswered. Has anyone had any experience with the company? Any

Re: [Elecraft] K3 / RF gain - S meter issue

Hi Bruce, try to reload the factory data calibration before doing the calibration with a generator. Usually it works. 73, Carlo Carlo Bianconi Telecomunicazioni Official Elecraft Dealer Via O.Trebbi 8/B 40127 Bologna - Italy Ph. 0515878825 mail carlobianc...@iol.it www.carlobianconi.com

Re: [Elecraft] K3: 2 meter SSB/CW Capability Questions

Steve and others, My best 2M MS contact was running the K144XV with the phase lock board and a BEKO amp at 800W into a 6el yagi in my attic. Over 1100 miles as I remember. It was a good combination. Jim, W4ATK On 12/14/2017 7:04 AM, Steve Kavanagh via Elecraft wrote: Phil One possible way

Re: [Elecraft] K3 / RF gain - S meter issue

Both of mine do. On 12/14/2017 6:38 AM, Roger D Johnson wrote: Is the S meter supposed to read 60 over 9 when the RF gain is turned all the way down? Mine reads 30db! 73, Roger __ Elecraft mailing list Home:

[Elecraft] N1BYT Single Loop Receiver query

Many years ago I bought an N1BYT Single Loop Receiver at the Dayton Hamvention. The radio has 3 controls and came with a small single-loop wire antenna that plugs into an NE602AN balanced mixer. Other ICs include an Analog Devices AMP04F instrumentation amplifier, an LM386 audio amplifier, and

Re: [Elecraft] K3 / RF gain - S meter issue

Is the S meter supposed to read 60 over 9 when the RF gain is turned all the way down? Mine reads 30db! 73, Roger On 12/13/2017 9:10 PM, Wes Stewart wrote: I would first perform the RF Gain calibration using the K3 Utility. The calibration program measures gain characteristics and applies

Re: [Elecraft] K3: 2 meter SSB/CW Capability Questions

Phil, I have had no problems working MSK144 on 2 meters as well as EME using the K144XV internal option with my K3S. John WA1EAZ > On Dec 14, 2017, at 8:04 AM, Steve Kavanagh via Elecraft > wrote: > > Phil > > One possible way to make a decision is to consider

Re: [Elecraft] K3: 2 meter SSB/CW Capability Questions

Phil One possible way to make a decision is to consider whether or not you might want to try meteor scatter on 2m using MSK144. The recommended absolute frequency accuracy for that mode is 25 Hz (though I think you'd get away with 80 Hz). This is a real challenge at 2m and the XV144 isn't