Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Hi Peter, I bought the Astron RS-35M for my $4000 K3 in 2008. I've never turned it off and I've never even given it a second thought. No fan, no RF noise, just reliable DC. 73, Mike K2MK Peter Pauly wrote > I'm looking at the Meanwell power supplies because they are cheap and seem > to be

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

An Astron SS-30M is a much better supply and will supply the required current. It has excellent regulation and IS NOT a noise generator. Plus it has a volt meter and amp meter on the front panel. 73 Bob, K4TAX K3S s/n 10163 On 10/29/2015 6:51 AM, Peter Pauly wrote: I'm looking at the

[Elecraft] Which of these would make the best power supply for the K3(S)?

I'm looking at the Meanwell power supplies because they are cheap and seem to be well regarded. I've come up with these two choices, feel free to give more suggestions of other models. I've seen talk on this reflector of supplying more than 13.8V to the K3S so that's why I'm looking at the 15V

[Elecraft] IMD and supply voltage

This subject keeps cropping up. Is this a serious issue ? I have heard that IMD improves by 10db with a one volt increase in supply voltage. Is this really the case or just a measurement error? 10db is a large difference. One volt is a small variation. What is the minimum acceptable IMD?

Re: [Elecraft] KRC2 rs232 to cpu not working

All, I found the problem. My serial cable had a broken wire on pin 2. I had used the serial cable on my KPA-500 and it was working. Must have broken when I removed it from the system and used it to test the KRC2. Thanks for all the pointers and help! Murphy is so busy at my QTH,

Re: [Elecraft] IMD and supply voltage

Frank, All radios that run from an external DC supply (to make them usable with emergency power sources, such as a 12-V car battery or solar panel) are subject to increasing TX IMD as supply voltage goes down. But such radios are virtually all specified (by the manufacturer) and tested (in QST

[Elecraft] Which of these would make the best power supply for the K3(S)?

For powering my Elecraft K3S and P3, I am using the Astron RS-35 power supply feeding a West Mountain DC-to-Go PWR gate PG40S and Rigrunner 4007U with a 79 Amp hour battery. Living on an island, we have many spikes and losses of power during the year. I figure that if I'm spending a sizable

[Elecraft] Mail list

New to this system. How do I unsubscribe to the mail list? Thanks. __ 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

Re: [Elecraft] IMD and supply voltage

Frank, I think the "issue" is one of some hams wanting to make what is good already into something better. If you look closely you should discover that this is a situation common to *all* 100 watt class amplifiers that are supposed to run on a nominal '12 volt' supply. That voltage level is

Re: [Elecraft] So: Which mini-keyboard to use with the PX3?

Hello Wayne, I have tested and use a Rapoo wireless ultra-slim keyboard model E9070 with a very tiny 2,4 GHz dongle. It has an on/off switch at the bottom and works, as far as I can tell, flawless. It does have a numeric keypad but still measures only 340 mm x 110 mm x 5 mm at the

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Yes, life is too short to power a radio from a cheap power supply. Remember, the life and performance of your radio depends on it. Bob, K4TAX Sent from my iPhone > On Oct 29, 2015, at 10:32 AM, gerald finn wrote: > > For powering my Elecraft K3S and P3, I am using

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I have an Astron 35 amp - been on 24/7 since the middle 80s. Also have an Astron 20 amp as a backup. Due to the age of the Astron, I decided it was time to replace it for the K3/P3 only. I bought the SS30-DV. It is small and quiet (physically quiet and RF quiet) and meets my needs nicely. The

Re: [Elecraft] Mail list

Go to the "Home:" link that can be found at the bottom of every post. Put in your password and edit your subscription as you desire. 73, Don W3FPR On 10/29/2015 11:48 AM, Richard Fredrickson via Elecraft wrote: New to this system. How do I unsubscribe to the mail list? Thanks.

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

My suggestion and test is to measure the voltage between the Astron power supply GRD terminal and the GRD terminal on the radio. Any value over 0.5 volts, when in CW mode, key down at 100 watts is a situation that should be investigated and improved. 73 Bob, K4TAX K3S s/n 10163 On

Re: [Elecraft] IMD and supply voltage

How about 80 watts instead. Won't make a noticeable difference on the receive end. Even better, get rid of all the Yaesu and Icom "Clackers" with their VERY poor CW performance. You can have the best class A amplifier in the world, but garbage in will always equal garbage out. I am ashamed at

Re: [Elecraft] IMD and supply voltage

And 120W over 100W gives you a whopping 0.8dB increase in power. Will anyone notice? I see the "easy to measure" effect in many fields. Anything that's easy to measure becomes the only thing to optimize. In program language compilers,the speed of the optimized program is easy to measure so

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I worked as an engineer and in marketing for a major power supply company. I did many design reviews and cost analysis on various MW power supplies. The designs are straight forward and their derating guidelines were not as robust as the ones I used. One area that they "just met spec" was for

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Astron is another power supply that runs on the "edge". People that use them at repeater sites on mountains derate them 50% plus so they do not have to run to the mountain and replace power supplies. A RS-35M in a controlled environment will do the job for a K3. I added a "hard" crowbar circuit

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Jim: Is there a particular Artesyn power supply model that you’d recommend? In taking a quick review of their website, they offer a 12 VDC and 15 VDC output in the LCM300 series which provides 300 watts (20 amps at 15 VDC) and a LCM600 series offering 600 watts (40 amps at 15 VDC). I presume

Re: [Elecraft] Mail list

Click on the Home link attached to every post. > On Oct 29, 2015, at 11:48 AM, Richard Fredrickson via Elecraft > wrote: > > New to this system. How do I unsubscribe to the mail list? Thanks. > __ >

Re: [Elecraft] IMD and supply voltage

Does that imply we should all adjust our power supplies to output +15VDC? Will that damage my 2M Rig? I recently purchased the powerwerx SS-30DV from Elecraft when I purchased my K3S kit. Thanks Jerry Moore CDXA, INDEXA, SKCC, Fists AE4PB, K3S - S.N. 010324 http://www.qrz.com/db/AE4PB An

Re: [Elecraft] IMD and supply voltage

On Thu, 29 Oct 2015 07:43:24 -0700 Wayne Burdick wrote: > The K3 and K3S, like our other radios, are very popular for Field Day and > other applications where a battery might be used. So we provide two ways for > you to monitor the supply voltage: > > 1. The CONFIG:BAT MIN

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

People might run them on the edge, but IMX with commercial repeaters Astrons are conservatively rated. Long ago I came to the conclusion was that at least some people thought a rating such as 20A meant it could deliver 20 amps continuously. Astrons, as their data sheet shows, are rated ICAS

Re: [Elecraft] IMD and supply voltage

On Thu,10/29/2015 12:06 PM, frank wrote: Also, you did not answer my questions. Maybe I should ask them one at a time. I thought Wayne answered them quite well, but I'll try to rephrase his answers in terms that are easier to understand. 1) Contemporary ham rigs are designed to operate

Re: [Elecraft] IMD and supply voltage

Jim, The marine divisions of Kenwood, et.al. already have low cost, low voltage, PA solutions with better IMD specs, primarily due to channel spacing for the marine band. Jim W6AIM -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown

Re: [Elecraft] Crystal filters for sale

Thanks to all who responded, but the filters have been sold. Bill W4ish __ 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

Re: [Elecraft] IMD and supply voltage

CW is just one mode and is the easiest to "get right" as far as the PA is concerned. CW bandwidth is determined primarily by keying shape and phase noise in the synthesizer (or D to A clock jitter). The K3/K3S is far from the cleanest rig when it comes to SSB on any of the audio based digital

Re: [Elecraft] RF and AF Gain

Funny Ted, I am starting to use the RF gain more now in the last few months then ever before… Maybe just tired to listening to the noise floor, hi hi. Frank KG9H > On Oct 29, 2015, at 12:48 PM, Dauer, Edward wrote: > > I believe there is another reason to reduce the RF gain

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Good link on power supplies and repeater builds. http://www.repeater-builder.com/astron/astron-repair/astron-repair.html Jim W6AIM . -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron D'Eau Claire Sent: Thursday, October 29, 2015 11:17 AM To:

Re: [Elecraft] IMD and supply voltage

On Thu, Oct 29, 2015 at 2:58 PM, Jim Brown wrote: > According to ARRL measurements, the K3 produces the cleanest CW signal of > any current rig. See my summary of their published data in the following > link > > k9yc.com/TXNoise.pdf > > See my measurements of my K3

Re: [Elecraft] IMD and supply voltage

My internal K3 readings of 14.3V idle and 14.0V at the 35w PEP out needed to drive my Alpha 8410 to 1200 or 1300 watts out, probably is pretty good IMD. The idle current is ~1.3 amps. Tune at 35 watts into 1:1 SWR is 8.7 amps. That's .04 ohms in the cabling. I don't have anything to directly

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

> On Oct 29, 2015, at 8:41 AM, Robert wrote: > > Yes, life is too short to power a radio from a cheap power supply. > Remember, the life and performance of your radio depends on it. > > Bob, K4TAX > > Ditto! There is nothing better than a rock solid Astron power

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I deleted all but the last post in this thread On 10/29/2015 1:41 PM, Phil Hystad wrote: There is nothing better than a rock solid Astron power supply. I am yet another guy who leaves the Astron on 24x7 unless we leave for vacation of more than a day. My Astrons (I have two) are Linear

Re: [Elecraft] Icoms answer to the KX3??

Not enough buttons on it for my CW-OP style. :-] I hate drilling into a menu just to change cw speed. Right now I'm in love with my new K3s!! Love that CWT display for zeroing in on a station! For a CW op, it doesn't get much sweeter. It will take me a little while to take full advantage of all of

Re: [Elecraft] IMD and supply voltage

Jim, This appears to *not* be true, at least for one radio lauded by those concerned about TX IMD. Earlier this year there was a long forum thread on Eham.net lamenting the "fact" that 12-V ham rigs were not as clean as 12-V marine rigs. One radio in particular, the Icom M802, was touted by

Re: [Elecraft] IMD and supply voltage

I agree Jim. Many hams do not understand what IMD values mean and how it affects other signals on the bands. To wit, the "on frequency" signal is not affected, the IMD is not heard on frequency, so it is of little concern to the operator as they are only concerned about getting a big signal

Re: [Elecraft] Which of these would make the best power supply for the K3(S)

See item # 220648795286. I have two and they work well. The seller stands behind their 2 year warranty and usually just ships a new replacement. They hold up well. 36 Amp 12 Volt 13.8V DC Regulated Power Supply 12V Real USA MegaWatt® I have no vested interest in these other than as a

[Elecraft] ETT TXF

I have just installed fldigi on the computer, configured it but do not have the CAT control working yet. Will work on that later. In the mean time when I go back to SSB on 20 meters and key the microphone I get a red TX light and ERR TXF on vfo B. TX arrow points to VFO A It transmits fine

Re: [Elecraft] IMD and supply voltage

I personally found the recent review in QST of the ANAN 100D using pre-distortion to lower TX distortion products to be the most exciting thing I have read in that rag in a LONG time. I DO hope they are setting a standard that others will strive for. It was so much better than any other rig they

Re: [Elecraft] IMD and supply voltage

Interesting results about the Icom M-802. It is actually marketed as a "150 Watt" rig, so testing it at 100 Watts would be giving it even more "benefit of the doubt". It is also interesting to note that Icom has disabled speech compression in the M-802 by default. Apparently, when compression is

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

On Thu,10/29/2015 1:41 PM, Phil Hystad wrote: I am yet another guy who leaves the Astron on 24x7 unless we leave for vacation of more than a day. You might not do that if you lived in W6, where, thanks to Enron, the cost of power is MUCH higher than in most of the US. In Chicago, my worst

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

On Thu,10/29/2015 2:13 PM, Fred Jensen wrote: The intermittent problem turned out to be paint under a lug with a loose screw. That seems to be a very common problem with Astrons -- the power system "green wire" (safety ground) is soldered to the mounting lug of a terminal strip, which is

Re: [Elecraft] Which of these would make the best power supply forthe K3(S)?

Fred, Gravity outages? Seriously? Now that just cracked me up, put a smile on my face that hopefully will last all day. Thanks Gary -Original Message- From: "Fred Jensen" Sent: ‎30/‎10/‎2015 7:15 AM To: "elecraft@mailman.qth.net"

Re: [Elecraft] KX3 to Computer

Thank you for all the information. I set the MIC BTN to OFF and adjusted the MIC GAIN for 4 bars (ALC) and turned on VOX. I am able to TX and RX SSTV, PSK32 and RTTY. (No contacts mostly receiving and transmitting into a dummy load until I have all the bugs worked out.) BUT I have to

Re: [Elecraft] KX3 to Computer

Forest, That sounds like a problem between you and your computer. If you are specific about the computer you are using, perhaps someone with the same setup can help you. I think the solution (if any) will be found in the soundcard mixer. It may or may not allow the selection of Line Out

Re: [Elecraft] IMD and supply voltage

Frank, Maybe when the devices come out Elecraft will bring out a new power amplifier module to replace the older module for both K3 and KX3. Meanwhile run the K3 at lower power and drive an external vacuum tube or solid state power amplifier. My experience of an Acom 2000A, a tube amp

Re: [Elecraft] IMD and supply voltage

Bob, et. Al: > >Signal reports heard being given today are largely "ego reports" and are >of little to no value. When was the last time you heard a report >indicating ones audio is distorted, or sounds like the transmitter has a >bit of FM, or there's buck shot heard 10 kHz away, or

Re: [Elecraft] IMD and supply voltage

Yes, we made sure compression was off. We gave the unit every opportunity to exhibit magic properties. Alas, it did not. Wayne N6KR On Oct 29, 2015, at 2:10 PM, Chip Stratton wrote: > Interesting results about the Icom M-802. It is actually marketed as a "150 >

Re: [Elecraft] IMD and supply voltage

Greg, Even a rig with predistortion capability will run out of steam and exhibit greater IMD when running from low supply voltages. Predistortion attempts to compensate for the compression by increasing drive, but there must be enough headroom to allow the algorithm to work. Note that the rear

Re: [Elecraft] IMD and supply voltage

Walt, Spot on. It is frustrating to operate in a contest as much as I enjoy the challenge, the vast majority of strong signals are many times, disturbing to listen to. I make a point of complimenting good audio even in the heat of battle. Gary -Original Message- From: "Luis V.

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

We're quite lucky here in nawthrun Vuhginya to be on an electric coop where our juice runs between 11¢ to 12¢ per kw-hr. However, I personally find it distasteful to leave a linear power supply "idling" 24/7 not running anything. In reality, I'm just plain too cheap to waste the power to keep a

Re: [Elecraft] IMD and supply voltage

On Thu, 29 Oct 2015 15:21:05 -0700 Wayne Burdick wrote: > Yes, we made sure compression was off. We gave the unit every opportunity to > exhibit magic properties. Alas, it did not. > > Wayne > N6KR > Sounds like all solid state amps offering more than about 50 watts are

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I agree with Jim, especially during air conditioning season. Why pay the electric company to heat with an Astron while I'm paying to cool with a Carrier? Switchers win this battle. -- Marc W8SDG > On Oct 29, 2015, at 5:18 PM, Jim Brown wrote: > >> On

[Elecraft] RF and AF Gain

I believe there is another reason to reduce the RF gain with the AF above what it otherwise would be; and I don¹t know that it has anything to do with AGC or the evolution of detectors over time. I have been doing it for over a half century and I still do it with my KX3 on CW. In casual rag

Re: [Elecraft] IMD and supply voltage

It looks like there might be a business opportunity for an external 100W amp which has very low distortion. Via auxbus it could be slaved to a K3, K3S, or a KX3. How does the KXPA100 stack up? Re: Overdriving speech processors K1N team member Glenn Johnson, W0GJ, said, “It seems like

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Yes "some resistance" might be OK, however several meghoms is not. This gets me to thinking, in ham radio models, wonder how many, which ones, and such can withstand a 5KV to 10KV ESD discharge on any knob, screw or connector and survive. That is one of the standards we had to meet with

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Folks - we're hitting the posting limit for this topic. To avoid overload for other readers, lets wind it down tonight and then close the thread.. 73 Eric List Moderation, Inc. /elecraft.com/ On 10/29/2015 2:25 PM, Jim Brown wrote: On Thu,10/29/2015 2:13 PM, Fred Jensen wrote: The

Re: [Elecraft] IMD and supply voltage

Folks - we're also hitting the posting limit for this topic. To avoid overload for other readers, lets wind it down tonight and then close the thread.. 73 Eric List Moderation, LLC /elecraft.com/ --- On 10/29/2015 4:57 PM, Matthew Cook wrote: Frank, Actually No. You can build solid state

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Just extremely busy today here at Elecraft HQ.. :-) 73, Eric /elecraft.com/ On 10/29/2015 5:16 PM, Peter Pauly wrote: Eric must be on vacation. This is where is would be forcing me to close the thread. __ Elecraft mailing list

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I agree the Astrons are hard to beat I use a pair of 70A supplies for my station and have several others a 35 and 2 20 amp supplies for spares. Fred N0AZZ Sent from my iPad > On Oct 29, 2015, at 3:41 PM, Phil Hystad wrote: > > >> On Oct 29, 2015, at 8:41 AM, Robert

[Elecraft] OT: Semi-Auto Bug Key Dot Stabilizers (Update)

For those of you on the list that frequently use bugs instead of keyers, recently I have had inquiries as to whether or not I still make the semi-automatic key "bug" Dot Stabilizers. The answer is yes, I still make them. I currently make "Dot Stabilizers" (a T.R. McElroy invention from the

Re: [Elecraft] Which of these would make the best power supply for the K3(S)

MegaWatt seems to be implying with "Real USA," posting a copy of their USA trademark registration, and warnings about Chinese copies, that this is a U.S. made product. However, no where do they actually state that their product is Made in USA. The style of construction looks like it is made

Re: [Elecraft] IMD and supply voltage

Frank, Actually No. You can build solid state 125Wpep HF amplifiers with TX IMD figures better than -42dBc that operate quite happily at full power with only 11V. Unfortunately they are typically designed and built by Military and Commercial HF manufacturers who then have to recover their

Re: [Elecraft] Which of these would make the best power supply for the K3(S)

I looked at those units and saw no reference to any safety or emissions certifications. 73 Bob, K4TAX K3S sm 10163 On 10/29/2015 6:31 PM, Josh Fiden wrote: MegaWatt seems to be implying with "Real USA," posting a copy of their USA trademark registration, and warnings about Chinese copies,

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Sorry about my mis-typing of POWER and POWDER... Dang, that's the first keyboard error I've made since typing class in H.S. in 1960. Yes conductive POWDER coating material is available, however it is more expensive and more difficult to use.When I worked for the JA's , how well I

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

The problem is that it still has some resistance George, W6GF Sent from my iPad > On Oct 29, 2015, at 5:09 PM, Bob McGraw - K4TAX wrote: > > Sorry about my mis-typing of POWER and POWDER... Dang, that's the first > keyboard error I've made since typing class in H.S.

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

Eric must be on vacation. This is where is would be forcing me to close the thread. On Thu, Oct 29, 2015 at 8:14 PM, George Fritkin via Elecraft < elecraft@mailman.qth.net> wrote: > The problem is that it still has some resistance > > George, W6GF > > Sent from my iPad > > > On Oct 29, 2015, at

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

It is amazing how many times I've found this to exist and how many times that I've written about this on various reflectors. The power coat paint on the chassis makes for an excellent insulator. If you have an Astron power supply and you have not checked to see that third pin ground is

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

First of all, it is POWDER coating not POWER coating. Secondly you can get conductive POWDER coating material. Unusual to find such and many people do not like to use it. George, W6GF Sent from my iPad > On Oct 29, 2015, at 4:49 PM, Bob McGraw - K4TAX wrote: > > It is

Re: [Elecraft] Which of these would make the best power supply forthe K3(S)?

Hmm. Guess I should take apart my big linear Alinco supply and check the basic safety wiring. I will definitely take apart the small Pyramid linear. Thanks. wunder K6WRU CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 29, 2015, at 2:38 PM, Gary wrote: > > Fred,

Re: [Elecraft] Which of these would make the best power supply forthe K3(S)?

Extra mass does not help in a gravity outage. It would just make more momentum as the power supply was flying away from the earth (centrifugal force from the earth’s rotation). It might be useful in a gravity brownout. But maybe not. In earthquake country, we do have something like a gravity

Re: [Elecraft] Icoms answer to the KX3??

When it comes to RF architecture, the IC-7300 is nothing like the KX3, it's actually a step ahead, because it's not a Direct Conversion, but a RF Direct sampling . ICOM didn't follow Elecraft on this one. They rather follow FlexRadio, the russian Expert Electronics and the italian Elad amongst

Re: [Elecraft] K3S In-Depth Review Coming Soon?

Apologies once again - this message sent yesterday to G3RXQ was meant to be copied to the whole group. -- You are right, Stewart. Please cancel that whole paragraph about the KIO3B. Apologies to the group for spreading my confusion worldwide. 73 from

Re: [Elecraft] Icoms answer to the KX3??

Am 29.10.2015 um 09:15 schrieb Martin Storli - LA8OKA : > > ... "The KX3 wasn't the first Direct Conversion SDR receiver with knobs > either, there where several smaler manufactures just prior to the KX3." Yes, maybe the ADAT-200 designed by Hans HB9CBU was the very first

Re: [Elecraft] IMD and supply voltage

Guys, This comment in no way is mean spirited, but truly a concern after reading all of this tech data. For those of us who do not have 100K in test equipment and a EE, I am starting to feel like I should not even get on the air. I get the concept, but the best I can do is make good

Re: [Elecraft] IMD and supply voltage

Eric, I have learnt a lot reading the posts, thanks for being tolerant. Gary -Original Message- From: "Eric Swartz - WA6HHQ, Elecraft" Sent: ‎30/‎10/‎2015 10:53 AM To: "Matthew Cook" ; "frank" Cc: "Elecraft Reflector"

Re: [Elecraft] ETT TXF

Look on page 70 of the manual and you will find that you do not have the correct transmit filter configured for SSB. How it got that way, I have no clue, but that error says it is currently incorrect. K3 Utility is the easiest way to configure the filters although you can do it using the menu.

Re: [Elecraft] IMD and supply voltage

Rich. I have been building radios since 1949 and a Ham since 1952. One of the first things I learned to appreciate is that good Hams operate their rigs to produce the cleanest signal possible. If it's a factory built, that means running it as recommended by the manufacturer. But that does not mean

Re: [Elecraft] IMD and supply voltage

As I think I remember, in California the limit was 1500 watts, unless you were calling an ATNO (all-time new one) in which case it was 5 kW. Vic 4X6GP/K2VCO > On 30 Oct 2015, at 12:55 AM, Doug Turnbull wrote: > > Of course this is a comparison of these two amps. Please

Re: [Elecraft] IMD and supply voltage

On 10/29/2015 5:53 PM, Luis V. Romero wrote: Processing issues heard on the air today simply make the discussion of final amplifier spectral purity moot. Comparing processing issues and transmitter IMD are mixing apple and oranges. Processing issues generally affect the quality of signal

Re: [Elecraft] IMD and supply voltage

IMD is not a single number, even at a fixed supply voltage and power output. Recent measurements that I have performed on my K3 show a significant variation in IMD vs. frequency. For example, at 30W (V+ 14.5V), the IMD of my K3, varied from -58 dB (relative to PEP*) at 3.8 MHz to -40 dB at 14

[Elecraft] What is "Good Enough"?

Sorry. I did not see that Eric had closed the thread before I answered (the bane of reading the most recent posts first). So this is what I should have titled my replay to Rich. Welcome to Ham radio Rich. 73, Ron AC7AC __ Elecraft

Re: [Elecraft] Which of these would make the best power supply for the K3(S)?

I never assumed that Astron assumed their linear supplies were in metal enclosures for the purpose of shielding. They are, after all, linear supplies that would not normally require shielding. I'm not familiar with their switchers. Does bonding he case together reduce the RFI they create? It was

Re: [Elecraft] Which of these would make the best power supply forthe K3(S)?

Actually, it was a joke, not an exposition on general relativity's explanation of gravity. It derives from the era of SX-28's and 75A4's. Mass or not, they would hold your desk down. I now live in NW NV, also earthquake country, and our bookcases and furniture are indeed tied to the studs.

[Elecraft] For Sale: Hand Mics for the K2 or K3 Radios

I have two hand mics for sale that will work with any version of the K2 or K3: 1. Elecraft MH2: This mic is in as new condition and comes with the hanger bracket, box and instruction sheet. $40 + $6 Priority Mail shipping. 2. Kachina: This is the mic that came with the PC-controlled