Re: [Elecraft] Amplifier Fan Noise

Peter,   Ah yes on AM with a squirrel cage blower to cool the pair of tubes     73 DOUG EI2CN    Sent from my Samsung Galaxy smartphone. Original message From: Peter Alterman Date: 02/06/2018 12:08 (GMT+01:00) To: Elecraft@mailman.qth.net Subject: [Elecraft] Amplifier Fan

[Elecraft] Amplifier Fan Noise

I have found noise-canceling headphones to be an effective antidote to amplifier fan noise. But I must say that I like hearing that fan humming along and delivering the RF (though not hour after hour in a contest). Probably the result of a misspent youth beside a homebrew dual 813 linear rack.

Re: [Elecraft] Amplifier

Problems like what Dennis is describing are often caused by failure to properly bond together all equipment in the shack, to bond that equipment to building ground, and to bond all building grounds together. That said, the original KIO3 board fails to follow the good engineering practice of

Re: [Elecraft] Amplifier

I had the opportunity to borrow an R professional field strength meter from the local telco when there were concerns over the installation of mobile phone towers in town. The worriers obsessed over the towers but completely ignored the little transmitters they and their kids would be clamping

Re: [Elecraft] Amplifier

radiation limits. 73, Ed - KL7uW Date: Fri, 7 Apr 2017 10:42:32 +0300 From: Vic Rosenthal <k2vco@gmail.com> To: Elecraft Reflector <elecraft@mailman.qth.net> Subject: Re: [Elecraft] Amplifier Message-ID: <8953d40c-305a-4a61-871a-7e6ece3e0...@gmail.com> Content-Type: text/pl

Re: [Elecraft] Amplifier

I assume you're commenting on the 1KW 20' away, although failed to say so. Turn this scenario around: pretend that you were trying to do medical treatment or research by heating your body to a biologically significant temperature. How much power to a transducer 20' away would it take? On

Re: [Elecraft] Amplifier

What Cheesy connectors are you referring to? WB4YAL John *Many of life's problems can be solved by simply deciding what we can do without. -JohnDolan * *Many of life's problems can be solved by simply deciding what we can do without. -JohnDolan

Re: [Elecraft] Amplifier

That proximity would scare me - I'd feel like I was on a skewer in a microwave oven. -- Many of life's problems can be solved by simply deciding what we can do without. - John Dolan __ Elecraft mailing list Home:

Re: [Elecraft] Amplifier

Hmm, I am running 1.2+ kW to a dipole on the roof about 20 feet above my K3, which has no RF problems though other devices in my shack do! Vic 4X6GP > On 6 Apr 2017, at 19:28, Dennis Watkins wrote: > > I would suggest that a redesign on the K2/K3s would be a starting point.

Re: [Elecraft] Amplifier

Which connectors? What's the anticipated problem? Please explain. Tnx 73 Josh W6XU Sent from my mobile device > On Apr 6, 2017, at 9:28 AM, Dennis Watkins wrote: > > I would suggest that a redesign on the K2/K3s would be a starting point. The > cheesy connectors on the

[Elecraft] Amplifier

I would suggest that a redesign on the K2/K3s would be a starting point. The cheesy connectors on the back of the k3 will not stand up to a strong field from a 1.5kw amp with the tower mounted to the house. To much leakage for me.

Re: [Elecraft] Amplifier wishes

Agree! Vy 73 de OZ1CCM, Kjeld -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Walter Underwood Sent: 5. april 2017 22:45 To: Elecraft List Subject: Re: [Elecraft] Amplifier wishes That could be handy. The bypass circuit could include a sensor

Re: [Elecraft] Amplifier wishes

That could be handy. The bypass circuit could include a sensor for a lower range (0.1 to 200W). wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Apr 5, 2017, at 1:38 PM, Doug Hensley wrote: > > It might not be possible but I'd like to see

Re: [Elecraft] Amplifier wishes

It might not be possible but I'd like to see one with an on-board watt meter that can also monitor just the K3 by itself when the amp is turned off. I'm not opposed to the requirement that it be turned on to make that watt meter work but either way, an on-board watt meter & SWR bridge would

[Elecraft] Amplifier thought: antenna tuner seldom needed with LDMOS amp

- K9OM In a message dated 4/1/2017 8:48:28 P.M. Eastern Daylight Time, elecraft-requ...@mailman.qth.net writes: Date: Sat, 1 Apr 2017 12:03:01 -0500 From: K9MA <k...@sdellington.us> To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier Thoughts Message-ID: <ecc6e608-42ae-aca5

Re: [Elecraft] Amplifier Thoughts

On 4/1/2017 09:22, John Perlick wrote: In the case of a solid state amp, the output is matched to 50 Ohms or so. Period. So any mismatch means that RF is reflected back into the ampwhere it is converted into heat. Depending on your SWR, that could be substantial! So let's say 3:1.

[Elecraft] Amplifier Thoughts

gt;> the same COMM port and the K3S is in USB mode with under CONFIG:RS232. >> Fldigi is not running when I use the Winlink software. I use the >> Elecraft supplied KUSB cable between the computer and the K3S. >> >> Can anyone give me a clue? >> >> Th

Re: [Elecraft] Amplifier

I would like - Attractive Price Point - 220VAC (given) - 1 antenna port - full RS232 or TPC/IP remote control - Good self protection due to antenna issues. - No tuner - No multiple antenna ports - Good metering for power, current, temp, etc... In other words, make a

[Elecraft] Amplifier

I personally would like to have a solid state amp capable of 1500 watts. I have an Alpha 9500 and Palstar HF-Auto that works just fine but I enjoy the way my KPA500/KAT500 along with the K3S works seamlessly with one another. Surely a solid state amp and tuner could replace my present setup with

Re: [Elecraft] Amplifier thoughts

Using my KAT500/KPA500 installation, I notice that I avoid using the tuner in AUTO mode, because the loud relays distract me when I am tuning around. In fact, I tend to disable the KAT500 and turn on the KAT100 in the K3. Therefore: A KAT1500 should either have sound absorbent materials built

Re: [Elecraft] Amplifier thoughts

ore careful design and >> installation of the entire antenna system. >> >> 73, Ron AC7AC >> >> >> >> -Original Message- >> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of >> brian >> Sent: Tuesday, March 28,

Re: [Elecraft] Amplifier thoughts

@mailman.qth.net Subject: Re: [Elecraft] Amplifier thoughts KAT500 handles a much wider SWR range (like to about 10:1). Why do you assume people are lucky enough to have antennas with no more than a 3:1 SWR across the ham bands? Yes, higher SWR's require beefed up components but welcome to the real

Re: [Elecraft] Amplifier thoughts

And please do away with the 15 dB amplification limit for all sales outside the USA. Nobody else has that rule in place so we should not suffer from it. ;-) 73, Olli Contest, DX & radio projects: http://www.dh8bqa.de Am 29.03.2017 um 01:00 schrieb Paul Van Dyke: Ralph Parker said my

Re: [Elecraft] Amplifier thoughts

] On Behalf Of Jim Brown Sent: Wednesday, March 29, 2017 12:11 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier thoughts On Wed,3/29/2017 11:47 AM, Ron D'Eau Claire wrote: > An SWR approaching 10:1 means high RF voltages on a coaxial line at > the voltage loops Remember that t

Re: [Elecraft] Amplifier thoughts

On Wed,3/29/2017 11:47 AM, Ron D'Eau Claire wrote: An SWR approaching 10:1 means high RF voltages on a coaxial line at the voltage loops Remember that the SWR on a transmission line, and thus the loss in the line, is determined ENTIRELY by the match between the antenna and the line, NOT

Re: [Elecraft] Amplifier thoughts

and installation of the entire antenna system. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian Sent: Tuesday, March 28, 2017 4:31 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier thoughts KAT500 handles

Re: [Elecraft] Amplifier thoughts

I noticed the frequencies shown on the NXP web site for their reference circuits: 81.36 MHz 230 MHz 87.5 to 108 MHz and . 27 MHz! 73, John W2XS -- View this message in context: http://elecraft.365791.n2.nabble.com/Amplifier-thoughts-tp7628611p7628620.html Sent from the Elecraft

Re: [Elecraft] Amplifier thoughts

Who needs three boxes if it has a switching power supply and the amp itself has >90% efficiency? That would be a nice amp in the best Elecraft 'portable' tradition. This is the only 1.5kW linear I would consider buying as a replacement for my good old Commander. 73, Arie PA3A Op 29-3-2017

Re: [Elecraft] Amplifier thoughts

I cast my ballot for NO internal coupler. 1) An internal coupler is NOT needed by many who would rather not pay for something they don’t need. Sure, it could be optional but see points 2 and 3. 2) An internal coupler at 1.5 KW as anything beyond a trivial “line flattener” will be large. If

Re: [Elecraft] Amplifier thoughts

I used to own the 1 KW Icom PW1 linear amplifier. It included within its huge & heavy black box the switching power supply and the 3:1 antenna auto-tuner. I sold that amplifier because my eyes sparkled in delight with a much, much smaller desktop KPA500 from Elecraft. If this new 1.5 KW

Re: [Elecraft] Amplifier thoughts

John - I used to live in the world you do... but I now live in a neighborhood where I can't put up a tower, or even a multiband dipole. My 30' Flag Pole is OK, and, in fact, my neighbors think it is quite nice looking, but in order to use it on more than the one band where its unmatched SWR is

[Elecraft] Amplifier thoughts

I guess we live in different worlds. My 10m-20m beams have an SWR <1.2:1 anywhere in the band. I designed them this way and no luck is involved. the SWR is a little higher at the top of the band on my lower band antennas but certainly not in the 3:1+ range you are referring to. A 1kw+ Elecraft

Re: [Elecraft] Amplifier thoughts

Perhaps an installable option would satisfy all... -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Marvin Sent: Tuesday, March 28, 2017 9:12 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier thoughts Put me down as a vote

Re: [Elecraft] Amplifier thoughts

Put me down as a vote against a built-in antenna tuner. I prefer a separate external tuner that integrates well with the amplifier. It allows for a lot more configuration flexibility. 73 John AC0ZG On 3/28/2017 5:00 PM, Paul Van Dyke wrote: Ralph Parker said my list. 1500w output, 160 -

Re: [Elecraft] Amplifier thoughts

You can always use impedance transformers to bring your match back within the "impedance range" of your tuner. These cost far less per unit price than the components required to beef up an internal tuner to handle impedance's of 500-800 ohms or more (or the conjugate) with a solid state amp. A

Re: [Elecraft] Amplifier thoughts

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian Sent: Tuesday, March 28, 2017 4:31 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier thoughts KAT500 handles a much wider SWR range (like to about 10:1). Why do you assume people are lucky enough to have antennas with no more than

Re: [Elecraft] Amplifier thoughts

KAT500 handles a much wider SWR range (like to about 10:1). Why do you assume people are lucky enough to have antennas with no more than a 3:1 SWR across the ham bands? Yes, higher SWR's require beefed up components but welcome to the real world. 73 de Brian/K3KO On 3/28/2017 23:00 PM,

[Elecraft] Amplifier thoughts

Ralph Parker said my list. 1500w output, 160 - 6m. 2 inputs. 4 outputs (Manual switching is OK). Built-in antenna tuner (good for 3:1 SWR). Reasonably quiet fans. Separate p/s, or remote control head (space considerations. :-) Paul. KB9AVO​ On Mar 28, 2017 4:40 PM, "Ralph Parker"

Re: [Elecraft] Amplifier thoughts

I better post this before I'm too late. I'd like: All the features of my KPA500, plus 1500w output, 160 - 6m. 2 inputs. 2 outputs (or more. Manual switching is OK). Built-in antenna tuner (good for 3:1 SWR). Reasonably quiet fans. Separate p/s, or remote control head (space considerations).

[Elecraft] Amplifier help?

Well after waiting almost 4 months it seems the US distributor that I ordered my 2k-fa amp from has gone qrt, permanently (Expert Amps USA). I chose them over the other US distributor because I though they looked more stable. Bad choice but it brought me to the realization of the dangers when

[Elecraft] amplifier

Is it possible to drive an alpha amp using antenna 2 output. This is without changing any of the rear panel wiring?? Dennis W7JX K3 # 3901 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] Amplifier keying line delay setting

It appears that the amplifier keying line is always set to operate as QSK with no delay. This keying signal dose not follow the delay that is set for the VOX on CW. The only way that I have found to keep the keying line closed is to put the KX3 into xmit with the front panel button. Will an

Re: [Elecraft] Amplifier keying line delay setting

In cw mode: Make sure QSK is not on. Make sure VOX is on. Push in and hold the speed control till CW n.nn appears. Rotate the speed control to set the drop out time you want. Anything up to 2 seconds can be set. Let us know if this doesn't work for you. Rick K2XT It appears that the

Re: [Elecraft] Amplifier keying line delay setting

The CW delay is not the issue but the delay fore the amplifier keyeng circuit. It is always set for QSK and dose not follow the delay that is set for the CW break in. __ Elecraft mailing list Home:

Re: [Elecraft] Amplifier keying line delay setting

Howard, Read the manual carefully - it says that the delay is the time for the receiver to *unmute* - it does not claim to extend the Keyout time. Now, having said that, there is nothing wrong with appealing to Wayne and other designers to have it also apply to the Keyout timing. 73, Don

[Elecraft] Amplifier Ins and Outs

Hi- Am parting with my old amp to make way for the KPA-500. Selling BW PT-2500A workhorse 160-10 Meters amp with WARC bands capability. Uses a pair of RF Parts 3-500ZG tubes, has original box and manual. Non smoking environment. Not a scratch. Seldom used (CW only) so I don't expect to miss

[Elecraft] Amplifier Suggestions

I have a K3/10 and live in a CCR environment. Presently I have a homebrew dipole (66 feet of stranded copper) in the attic. It works quite well but I would like to have more reach with CW. I am also concerned about getting RFI into the neighbor's speakers. I would like to consider a smaller

Re: [Elecraft] Amplifier Suggestions

I would add the Elecraft amplifier designed for the K3 to upgrade to a K3/100. There aren't a lot of choices for amps that are designed for 10 watts in. You could go with any linear designed for higher power and just get less out driving with 10 watts. 73 - Mike WA8BXN

Re: [Elecraft] Amplifier Suggestions

WA8BXN hubb...@hotmail.com To: elecraft@mailman.qth.net; Frank MacDonell kd8...@gmail.com Sent: Saturday, April 16, 2011 10:48 AM Subject: Re: [Elecraft] Amplifier Suggestions I would add the Elecraft amplifier designed for the K3 to upgrade to a K3/100. There aren't a lot of choices for amps

[Elecraft] Amplifier Suggestions

Frank and All, There are some very good small amps out there. Tokyo Hy-Power now offers an HL-45 that will run about 50 watts or so, and is a very good product. I have their older version, the HL-50B, and it is a superb product as well. It is particularly useful with the numerous little QRP

[Elecraft] New Elecraft Amplifier

Will the new 900 watt amplifier require any connections to the radio other than a coax cable and if so then is it supplied and how long will it be? I currently use an amp that has to be keyed and am curious as my amp is not real close to the radio and I am considering the new amp. My current

Re: [Elecraft] New Elecraft Amplifier

notes, my naked soldering days are over! 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron Gould Sent: Tuesday, December 21, 2010 7:35 AM To: elecraft@mailman.qth.net Subject: [Elecraft] New Elecraft Amplifier

Re: [Elecraft] New Elecraft Amplifier

Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron Gould Sent: Tuesday, December 21, 2010 7:35 AM To: elecraft@mailman.qth.net Subject: [Elecraft] New Elecraft Amplifier Will the new 900 watt amplifier require any connections

Re: [Elecraft] New Elecraft Amplifier

What will be the usable power on RTTY? 73, Claude VE2FK - Original Message - From: Dick Dievendorff To: 'Ron Gould' ; elecraft@mailman.qth.net Sent: Tuesday, December 21, 2010 10:58 AM Subject: Re: [Elecraft] New Elecraft Amplifier Ron: The KPA500 also requires

Re: [Elecraft] Elecraft Amplifier

To: elecraft@mailman.qth.net Subject: [Elecraft] Elecraft Amplifier I've been off the reflector for 5 weeks on a cruise in Europe. Has there been any announcement for anticipated delivery. Thanks Phil Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com

Re: [Elecraft] Elecraft Amplifier

This is a totally inappropriate posting for the reflector and is outside of the list guidelines. It is never appropriate to make rude and directly critical postings about another list member. Please see the list guidelines at: http://www.elecraft.com/elecraft_list_guidelines.htm 73, Eric

Re: [Elecraft] Elecraft Amplifier

: Thursday, November 11, 2010 10:55 AM To: Terry Schieler Cc: 'Phil LaMarche'; elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft Amplifier This is a totally inappropriate posting for the reflector and is outside of the list guidelines. It is never appropriate to make rude and directly

Re: [Elecraft] Elecraft Amplifier

: 'Phil LaMarche'; elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft Amplifier This is a totally inappropriate posting for the reflector and is outside of the list guidelines. It is never appropriate to make rude and directly critical postings about another list member. Please see

Re: [Elecraft] Elecraft Amplifier

Correction - Terry (not Phil) 73, Eric On 11/11/2010 9:10 AM, Eric Swartz - WA6HHQ, Elecraft wrote: OK Phil - No harm done. I apologize if I reacted too quickly. Email is a pretty sterile medium where its hard to see if someone is making a friendly tongue-in-cheek comment, or something

[Elecraft] Elecraft Amplifier

I've been off the reflector for 5 weeks on a cruise in Europe. Has there been any announcement for anticipated delivery. Thanks Phil Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com www.LaMarcheEnterprises.com http://www.lamarcheenterprises.com/ 727-944-3226

Re: [Elecraft] Elecraft Amplifier

Nope :-( But we are all living in hope :-) 73's Gary On Wed, Nov 10, 2010 at 10:25 PM, Phil LaMarche plama...@verizon.netwrote: I've been off the reflector for 5 weeks on a cruise in Europe. Has there been any announcement for anticipated delivery. Thanks Phil Philip LaMarche

[Elecraft] Amplifier Cable:K3 to Alpha 8410

It was suggested to connect my K3 to my Alpha 8410 that I could purchase a shielded cable from Radio Shack. I need one end to be a phono plug and I assume that the end that connects to the K3 is also a phono plug. Does anyone have any suggestions looking through the Radio Shack website as to

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

I just use a regular old phono (RCA to RCA) cable between my K3 and 87A. Works fine. On 10/15/2010 1:50 PM, pastor...@verizon.net wrote: It was suggested to connect my K3 to my Alpha 8410 that I could purchase a shielded cable from Radio Shack. I need one end to be a phono plug and I

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

If you're after decent shielding to keep RF out of the circuit, Radio Shack might have what you want. Nowadays a high impedance is typically 1 or 2K ohms instead of the 50K ohms are more common a few decades ago. Audio cable shielding has been reduced accordingly - especially from lower-cost

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

On Fri, 15 Oct 2010 14:12:34 -0500, Philip Leonard leoli...@seidkr.com wrote: Same here. Tom, N5GE K3 #806 with SUB RX, PR6, KRC2 and K144XV K3 #1055 with PR6 and XV432 W1, 2 W2's and other small kits QCWA Life Member 35102 n...@n5ge.com http://www.n5ge.com http://www.swotrc.net I just use

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

I use Radio shack VIDEO cables for RCA to RCA connections in the shack. They seem to have shields. 73, Guy. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

Good point, guy. I discovered the minimal shields when I bought an AUDIO cable from them to use with an old crystal-element microphone. What a surprise when I was greeted with tons of 60 Hz hum. That was when I discovered the minimal shielding by opening it and a few other audio cables I had from

Re: [Elecraft] Amplifier Cable:K3 to Alpha 8410

On 10/15/2010 12:31 PM, Ron D'Eau Claire wrote: For that reason I make my own using RF type coaxial cable. RG-174 makes excellent lightweight shielded cables with a diameter of about 1/8. That's very good advice, Ron. 73, Jim K9YC __

Re: [Elecraft] Amplifier

Actually its my work to design and get products through these types of regulations so I tend to like to know how these different rules work and how people cope with them. If its not your thing great that's why there are people like me. ~Brett (N7MG) On Tue, Aug 10, 2010 at 8:33 PM, Tim Tucker

Re: [Elecraft] Amplifier

...@livecomputers.com Subject: Re: [Elecraft] Amplifier To: Tim Tucker ae...@worldwidedx.com Cc: elecraft@mailman.qth.net Date: Wednesday, August 11, 2010, 3:20 PM Actually its my work to design and get products through these types of regulations so I tend to like to know how these different rules work

[Elecraft] Amplifier

I know that at Dayton, Elecraft showed an outboard amplifier to be available at a later date. I presently have a K3 10 and am wondering id the 10 watts will be enough to kick the new amp and does anybody have an idea how many dollar$ ? Sorry if this was already covered. A happy K3 owner

Re: [Elecraft] Amplifier

...I presently have a K3 10 and am wondering if the 10 watts will be enough to kick the new amp Yes, it will. You'll likely get more than 100 watts but less than 200 watts output with 10 watts of drive. If you want the full 500+ watts, then you'll probably need 30W to 40W of drive. 73,

Re: [Elecraft] Amplifier

@mailman.qth.net Subject: Re: [Elecraft] Amplifier ...I presently have a K3 10 and am wondering if the 10 watts will be enough to kick the new amp Yes, it will. You'll likely get more than 100 watts but less than 200 watts output with 10 watts of drive. If you want the full 500+ watts, then you'll

Re: [Elecraft] Amplifier

-Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson Sent: Tuesday, August 10, 2010 1:33 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier ...I presently have a K3 10 and am wondering if the 10 watts

Re: [Elecraft] Amplifier

Sent: Tuesday, August 10, 2010 1:33 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier ...I presently have a K3 10 and am wondering if the 10 watts will be enough to kick the new amp Yes, it will. You'll likely get more than 100 watts but less than 200 watts

Re: [Elecraft] Amplifier

Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tim Tucker Sent: Tuesday, August 10, 2010 4:31 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier And yet they certified it. http://www.radio-ham.eu/Download/FCC-Certification.pdf

Re: [Elecraft] Amplifier

Depends on the Amplifier, I have a SPE Expert 1K-FA.10watts drive = 500 watts out http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr;sid=f338c42916def7b9976d97732e60ec83;rgn=div8;view=text;node=47%3A5.0.1.1.6.4.157.9;idno=47;cc=ecfr § 97.317 Standards for certification of external

Re: [Elecraft] Amplifier

PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier And yet they certified it. http://www.radio-ham.eu/Download/FCC-Certification.pdf On Tue, Aug 10, 2010 at 1:13 PM, Robert Friess rfri...@usa.net wrote: If the SPE does that, which is 17dB gain, then it does not conform

Re: [Elecraft] Amplifier

$2200 David G3UNA and does anybody have an idea how many dollar$ ? Sorry if this was already covered. A happy K3 owner Rich KC8HMJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Amplifier

[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson Sent: Tuesday, August 10, 2010 1:33 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier ...I presently have a K3 10 and am wondering if the 10 watts will be enough to kick the new amp Yes, it will.  You'll likely

Re: [Elecraft] Amplifier

: Lyle Johnson; elecraft@mailman.qth.net Subject: Re: [Elecraft] Amplifier Huh? I thought that was illegal? ~Brett (N7MG) On Tue, Aug 10, 2010 at 12:37 PM, W4GRJ w4...@satterfield.org wrote: Depends on the Amplifier, I have a SPE Expert 1K-FA.10watts drive = 500 watts out Jack W4GRJ

Re: [Elecraft] Amplifier

Subject: Re: [Elecraft] Amplifier Huh?  I thought that was illegal? ~Brett (N7MG) On Tue, Aug 10, 2010 at 12:37 PM, W4GRJ w4...@satterfield.org wrote: Depends on the Amplifier, I have a SPE Expert 1K-FA.10watts drive = 500 watts out Jack W4GRJ -Original Message- From

Re: [Elecraft] Amplifier

If we want to split hairs, the 1K-FA is actually advertised as having a gain of 16dB!! So they are not hiding anything. 73 Tony Fegan VE3QF Brett Howard wrote: Why be sorry I'm only wondering... I'd thought that over 15dB of gain was against the rules. 10W is 40dBm thus +15dBm is

Re: [Elecraft] Amplifier

KPA-500..new Elecraft Slogan...I JUST WANT ONE! Oh well, back in my cave. Gary On Wed, Aug 11, 2010 at 1:11 PM, Tony Fegan VE3QF jafe...@rogers.comwrote: If we want to split hairs, the 1K-FA is actually advertised as having a gain of 16dB!! So they are not hiding anything. 73 Tony

Re: [Elecraft] Amplifier

The FCC Certified it, so who cares? If you spend all your time trying to figure out why our government has rules that it routinely ignores, you're going to drive yourself crazy. The speed limit on the national highway system is 75mph. Yet the NTSB has no problem with manufacturers that sell

Re: [Elecraft] Amplifier

Folks, lets end the argument portion of this thread. This is outside of the list guidelines (just reposted). Keep it cordial. 73, Eric elecraft List Moderator www.elecraft.com _..._ On Aug 10, 2010, at 8:33 PM, Tim Tucker ae...@worldwidedx.com wrote: The FCC Certified it, so who cares?

[Elecraft] Amplifier tuning K3 (was QRQ QSK)

A two-tone generator is OK for testing an amp on a spectrum analyzer for odd-order IM performance, but is one of the last things people should use for daily tuning of an amplifier. The most desirable thing is something that has a very low average power and full or even slightly above full

Re: [Elecraft] Amplifier suggestions?

Let's say, for argument's sake, I too have a THP 1.5 (which I do not). My work and family take up most, if not all of my time. I can only put a couple of feet of wire to use as a antenna because of HOAs. I have 10 countries confirmed because I don't care for QSL cards or LOTW. Does that make it a

Re: [Elecraft] Amplifier suggestions?

Dave, I've run Drakes L4B and L-75, Yaesu FL-2100z and Commander hf2500. Never bought one of these new. All four are good amps if you know what you are doing when you tune and use it. If you don't know or if you want it all automatic , then take the automatic ones as suggested. (they are usually

[Elecraft] Amplifier suggestions

...The reviews seem to favor an Acom 1000 or Tokyo Hi-Power... I have an Acom 1000, and love it! Almost silent in operation (including true QSK), protects itself from everything (including me), and matches any reasonable load. Tubes not as cheap as they have been, but still available at

[Elecraft] Amplifier suggestions?

I am thinking about a move up in power for my K2/100. The reviews seem to favor an Acom 1000 or Tokyo Hi-Power. What is the collective wisdom here? Thanks Dave K6CGE __ Elecraft mailing list Home:

Re: [Elecraft] Amplifier suggestions?

Was over at a friends shack who is driving a Tokyo High Power 1.5 with a K2. He speaks very highly of it. He fired things up and got through to a South African station first call on RTTY and then switched over to SSB and used a vertical to work a ZD station I think. Got through the pile up

[Elecraft] Amplifier Relay Keying Circuit

Hello folks, I'm trying to build a simple relay circuit to key a Yaesu FL2100B amplifier. The amplifier uses negative keying voltage, so I need to have some sort of interface in between the K3 and the amp (Per the manual, the K3 supports +200v but not negative voltage). If I put an ohm meter

Re: [Elecraft] Amplifier Relay Keying Circuit

Patrick, Move the K3 Key Out to the other side of the relay - think of it as a sink to ground. i.e. connect +12V directly to one end of the relay coil, and connect the other end of the relay coil to the center of the Key Out jack. When the K3 transmits, the path to ground will be connected, and

Re: [Elecraft] Amplifier Relay Keying Circuit

Pat, Are you using the same K3 power supply to provide power to the relay? Or, is it a separate power supply (e.g., a wall-wart type?) If it's the same supply, then -- 1) The (+) lead from the power supply is tied to one side of the 12VDC relay. If it's a polarized relay (i.e., with

[Elecraft] Amplifier for K-2/10

I know about the KPA/100 option for the K-2, but wonder if there are any alternatives for obtaining 100 watts output or better from the K-2. I am looking for an amplifier that might produce 100 watts or better with an input of only 10 watts from the K-2. If anyone knows of one out there it would

Re: [Elecraft] Amplifier for K-2/10

Ron, Your best bet is a KPA100 - it couples with the K2 and everything is automatic in operation. I recall that the FCC requires amplifiers which operate with less than 50 watts input to be sold legally in the US, so you do not see many amplifiers with 100 watts out and 5 or 10 watts in

Re: [Elecraft] Amplifier for K-2/10

...@earthlink.net To: elecraft@mailman.qth.net Sent: Sunday, June 21, 2009 4:32 PM Subject: [Elecraft] Amplifier for K-2/10 I know about the KPA/100 option for the K-2, but wonder if there are any alternatives for obtaining 100 watts output or better from the K-2. I am looking for an amplifier that might

Re: [Elecraft] Amplifier for K-2/10

See http://www.hfprojectsyahoo.com/ Leigh/WA5ZNU I know about the KPA/100 option for the K-2, but wonder if there are any alternatives for obtaining 100 watts output or better from the K-2. I am looking for an amplifier that might produce 100 watts or better with an input of only 10 watts from

Re: [Elecraft] Amplifier for K-2/10

Leigh, I've asked this question recently but have not received and responses. Perhaps there are a couple of folks out there that have found a compatible amp that can provide 100W or a bit more. QSK would be a FB added attraction. Dick, K2ZR Leigh L. Klotz, Jr WA5ZNU wrote: See

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