[Elecraft] K3/KPA500 occasional high power input

With my K3/KPA500/KAT500 combo I occasionally get a soft or hard alarm on the KPA500 due to the K3 briefly giving a high power burst. I now have a digital peak power meter between the K3 and KPA500 and I can see the surges. The power output from the K3 is steady apart from these brief bursts. The

[Elecraft] KXPA100 with KXAT100 for Sale

PX3 Sold - I Still have the KXPA100 (KX3 Amp) with KXAT100 (KX3 Tuner) & KXPACBL (Cable Set) for sale Serial Number: 0067 - Factory Built: - $975 (or best offer) + Shipping/Insurance Includes the Manual Non-smoking environment. CONUSA only, Payment by PayPal (Transfer of Funds)

[Elecraft] [OT] 10 mHZ vs 10 Mhz

When I started in the 1950s, we tuned kilocycles and announced Abel, Baker, Charlie, Dog, Easy, Fox. A thousand was M, a million was MM, and Greek was a foreign language. Does current still flow from + to - in a circuit? If not, then most of my early electronics training was fanciful and my

Re: [Elecraft] K3 keying Alpha 374A/76A

Scott, The K3 KEYOUT can handle up to 200 volts as long as it is a positive voltage. So +20 volts is no problem. I cannot comment on the delay settings, I don't have an Alpha amp. 73, Don W3FPR On 11/3/2015 9:51 AM, Scott via Elecraft wrote: Out of an overabundance of caution I thought

Re: [Elecraft] 10 mHZ external reference VS the K3S's optionalKTCXO3-1

On 11/2/2015 8:19 PM, Ron D'Eau Claire wrote: > n the Elecraft manuals and other technical writing I stick with the S.I. > standard notation. You can find details on line here; > > http://physics.nist.gov/cuu/Units/units.html > > The units are on that page and click on the link at the bottom for

[Elecraft] Elecraft K3 For sale

Elecraft K3, 100 watt PA Serial Number 8498, One owner, used less than 7 months. Filters 2.7 and 8 pole 400 Hz. Includes 100 watt ATU and Sub receiver. Total investment $3429.70 Asking $2400.00 plus shipping 73, Hugh K7XM __

Re: [Elecraft] K3: transverter question

Jim, Just assign each transverter to a unique TRN address number. The XV144 can be TRN1,2,3, or 4 depending on the setting of the DIP switch inside the XV144. The internal K3 k144XV option is INT TRN1. I don't have either the internal or external 144 transverter, so I cannot test whether

Re: [Elecraft] Working Split with K3S

On Tue,11/3/2015 10:33 AM, Amateur Radio Operator N5GE wrote: What am I missing here? What antenna is connected to the Sub-RX? Is the Sub-RX on? Many K3 settings are "by band," so making a change on one band does not carry through to other bands. This is often the cause of the K3 doing

[Elecraft] Working Split with K3S

I'm trying to set-up working Split Folowing Fred Cady's K3s manua land I'm having trouble setting it up on 17m. I have it setup for 20m and it works very well. I can hear the the audio from the sub rx in pileups-ups and it works great! On 17m I followed the instructions, and I can hear the

Re: [Elecraft] Working Split with K3S

Tom, SPLIT and the SubRX are two different things - try not to get them mixed up. The SubRX normally receives using VFO B (unless in DIVERSITY), but that is not the same as SPLIT. With SPLIT off, transmit will be on the VFO A frequency. When SPLIT is ON, transmit will be on the VFO B

Re: [Elecraft] 10 mHZ external reference VS the K3S's optional KTCXO3-1

>From the K3EXREF manual Introduction: The K3EXREF option locks the K3's reference oscillator frequency to an external 10 MHz source by automatically controlling the REF CAL function. While locked to the external source, the K3's reference oscillator frequency is maintained within 2 Hz. Since the

Re: [Elecraft] K3 keying Alpha 374A/76A

Thanks everyone, seems to be working great at 008 here. On to the next problem :) 73 Scott In a message dated 11/3/2015 2:05:57 P.M. Central Standard Time, j...@audiosystemsgroup.com writes: On Tue,11/3/2015 11:48 AM, Elliott Lawrence wrote: > I use the default setting TX Dly 008 with

Re: [Elecraft] K3 keying Alpha 374A/76A

I use the default setting TX Dly 008 with my 87A with no problem. I would think that it would work fine also with the contempory 76s etc. 73 Elliott WA6TLA On Nov 3, 2015, at 11:26 AM, Don Wilhelm wrote: > Scott, > > The K3 KEYOUT can handle up to 200 volts as long as

Re: [Elecraft] K3 keying Alpha 374A/76A

I use an Alpha 76PA with my K3 and no problems. 73, Bob K6uj On 11/3/15 11:48 AM, Elliott Lawrence wrote: I use the default setting TX Dly 008 with my 87A with no problem. I would think that it would work fine also with the contempory 76s etc. 73 Elliott WA6TLA On Nov 3, 2015, at 11:26 AM,

Re: [Elecraft] For Sale: KRC2 & KFL3A-250

The filter is also SOLD. Thanks, Julius - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2#4455 Elecraft K3/100 #366 Elecraft K3/100 -- View this message in context:

Re: [Elecraft] K3 keying Alpha 374A/76A

On Tue,11/3/2015 11:48 AM, Elliott Lawrence wrote: I use the default setting TX Dly 008 with my 87A with no problem. I would think that it would work fine also with the contempory 76s etc. It works fine with my Ten Tec Titan 425s, which are early '80s vintage, and use a vacuum relay for

Re: [Elecraft] 10 MHz Reference Oscillator

I see both a sine wave and a square wave version available on ebay. The K3EXREF doc references both w/ regard to signal source, so I assume either would work. Initially, I'll only be connecting a K3, is one a better choice than the other? Jeff KC9WSJ On 10/31/2015 01:40 PM, Bob W7AVK wrote: >

Re: [Elecraft] 10 mHZ external reference VS the K3S's optional KTCXO3-1

Doug, Many do not understand what how K3EXREF improves accuracy and stability. Its commonly thought that its a phase locking system (which it is not doing). Basic frequency accuracy and stability is established by the TCXO in the K3 which provides frequency reference to the VFO's. Per

Re: [Elecraft] [K2]K2 filters continue to "drift" out of alignment

Bruce, The bottom line is that the BFO frequency is 'drifting'. The most probable cause is a defective solder connection in the BFO area. Carefully lift L33 and reflow the soldering of the BFO crystals. Reflow the soldering of C173 and C174, RP6. D37, D38, C169 and Q24. Make certain when you

[Elecraft] [K2]K2 filters continue to "drift" out of alignment

I posted a query about this a few years ago and it remained largely unresolved at the time. The "end user" symptom was and is that filters would over time "drift" (there's probably a better technical term) out of alignment, requiring a CAL FIL operation. I've had to do this several times since

[Elecraft] Microphone Setup

Is there an FAQ for microphone setups for the K3(S)? Particularly, I am looking how to set up the Heil PR-781 on the K3, including the menu setup. TIA, '73 de JIM N2ZZ __ Elecraft mailing list Home:

Re: [Elecraft] Microphone Setup

James, Sorry about that. I'd be glad to help you. You can email me off-line if needed. It's been a few years, but the review would do me good. I can remember this; at the time, it was the same as a Kenwood except for one wire/pin. The bias battery had me wondering as I recall. But it is

[Elecraft] P3 - Waterfall Marker Question

Am I doing something wrong or is this just how it works? I have the P3's waterfall marker turned on. The "marker" slowly crawls down the screen toward the bottom. Moving the Select knob drags the top of the marker and the rest slowly follows drawing a snake. Cute but...huh? Question: What

Re: [Elecraft] [OT] 10 mHZ vs 10 Mhz

I always remember 100K resistors and a 1M resistor was one megohm. I started with electronics in the mid 50's when transistors were new fangled things with 3 leads connected to a piece of germanium. Even in the 50s, I believe it was recognized that electron flow was from the negative to

Re: [Elecraft] Microphone Setup

On Tue,11/3/2015 7:44 PM, James F. Boehner, MD via Elecraft wrote: Is there an FAQ for microphone setups for the K3(S)? Yes. It's called read the manual. 73, Jim K9YC __ Elecraft mailing list Home:

Re: [Elecraft] K3: transverter question

Yes. 73, Olli Contest, DX & radio projects: http://www.dh8bqa.de Am 03.11.2015 um 14:39 schrieb Jim Spears: Is it possible to configure the XV menu entries so as to have two transverters defined with 144 MHz (operating band) -> 28 MHz (IF band) configurations? One would be the internal

Re: [Elecraft] K3 RX issue with KAT3A?

The suspect was pursued, caught, arrested and taken to the garbage with the soldering iron. It was a defective pin diode that caused the loss of 10 dB. Thanks to all who have given me advice. 73 Udo, DK5YA Am 02.11.2015 um 16:18 schrieb Udo Langenohl - DK5YA: Gents, in spring I made an

[Elecraft] K3 keying Alpha 374A/76A

Out of an overabundance of caution I thought I'd ask first My manuals for my old Alphas suggest the amplifier keying line is 20 something volts DC +, and the K3 manual says I can key way more than that + DC. So I just wanted to confirm (or learn more): 1) I shouldn't worry about any

[Elecraft] K3: transverter question

Is it possible to configure the XV menu entries so as to have two transverters defined with 144 MHz (operating band) -> 28 MHz (IF band) configurations? One would be the internal K144XV and other an external transverter using the low level XVTR IN and OUT jacks. Jim/N1NK

Re: [Elecraft] K3/KPA500 occasional high power input

Hi Rich, Do the TX Gain calibration again and then retest into your dummy load on all bands. You don't need to use the amp or tuner since it's a K3 problem that you can see with your power meter. You indicated that the overshoot occurs on the lower bands. If it only occurs on 1 or 2 bands you