Re: [Elecraft] OT antenna question

I should clarify that I was thinking in terms of ~ 100W. There's always the old standby of Jennings vacuum variables for QRO use 73, Al On Thu January 14 2016 9:44:04 am Dave Olean wrote: > I bought a bunch of those Russian TX caps. Mine were 680 pf and looked like > the 7.5 KV Centralab

Re: [Elecraft] OT antenna question

I bought a bunch of those Russian TX caps. Mine were 680 pf and looked like the 7.5 KV Centralab ceramic TX caps with threaded holes on each end. I put two in parallel and used them for the plate blocking capacitor in a 160 meter KW triode amplifier. Big mistake. They cannot handle much current

Re: [Elecraft] Wide CW Signals

My guess is that they are that bad. Luckily, the ones that are hot-switching their relays won't be on the air for too long. At least, not with high power. 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ On 14 Jan 2016 18:56, Bob McGraw K4TAX wrote: Depending on the radio they

Re: [Elecraft] Wide CW Signals

Below... On Thu, 14 Jan 2016 10:56:05 -0600, you wrote: >Depending on the radio they are using, some are really nasty! > >And with some that seem to run their radio in QSK mode, but without a >QSK qualified amp, that makes things worse as they are likely arcing and >sparking the relays.

[Elecraft] OT antenna question -- solved, soon to be fixed

I would like to thank the numerous hams who responded to my plea for help. The problem that was causing my SWR to rise with high power was not in my shack. The tuner, balun, coax and open wire line were all 100%. The trouble was at the connection of the feedline to the antenna. The

Re: [Elecraft] Wide CW Signals

I've noticed that it is directly proportional to the signal strength, but some ARE that wide (one brand in particular is more offensive). Rick nhc On 1/14/2016 9:24 AM, Vic Rosenthal 4X6GP/K2VCO wrote: My guess is that they are that bad. Luckily, the ones that are hot-switching their relays

Re: [Elecraft] Wide CW Signals

The old FT-1000D is notorious. (I have one.) I'm not sure about the MP. There's a mod, which helps, but it's still wide. It's a big reason I bought a K3. -- Scott Ellington K9MA Madison, Wisconsin, USA On 1/14/2016 11:26, Rick WA6NHC wrote: I've noticed that it is directly proportional

Re: [Elecraft] OT antenna question

I wish to second Bob and also add that Russian TX capacitors are usually labled not only with max voltage but also with max power they can handle. In Russian that is printed as XX KBAP which stands for Kili Volt Amp Reactive power. And XX is the number. 73, Igor UA9CDC - Original Message

Re: [Elecraft] Interfacing KX3 with computer to run HDSDR

Have you seen this article? http://hdsdr.de/Elecraft-KX3_with_HDSDR.pdf The Omni-rig allows the HDSDR to change the frequency and or mode of the KX3 and vice versa. It uses a com port to do that, so you can use the USB to serial adapted that Elecraft supply. 73 from David GM4JJJ > On 14

Re: [Elecraft] OT antenna question

Bob, Are silver(ed)/dipped micas (CDE etc.) the preferred type for a tuner, or is there a superior newer technology available? TNX/73, Al On Wed January 13 2016 2:52:52 pm Bob McGraw K4TAX wrote: > > If your tuner uses disk ceramic caps, as many do, these can be heating thus > not being able

Re: [Elecraft] OT antenna question

First I'd say 680 pf , two parallel, is not at all adequate for a 160M KW amp. More like 4 would be expected for about 2800 pf total required for 160M depending on plate Z. Also with 3200 volts or so, again depending on the plate Z, 7.5 KV again is not much margin of safety. Ep x 4

[Elecraft] Wide CW Signals

Is there something wrong with my P3, or are all of those extremely wide raged CW signals I see in the DX pile-ups really that bad? ARS N5GE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] K5P Palmyra Dxpedition on the air with Elecraft rigs

K5P Palmyra Island is on the air with with K3S transceivers, P3s and KPA500s. See: http://www.dxsummit.fi/#/?dx_calls=K5P and http://palmyra2016.org Pic of K5P op positions in action at: http://elecraft.com/DXpeditions/kp5ops.jpg 73, Eric /elecraft.com/

Re: [Elecraft] K2 and P3

The answer is yes. Actually a better answer is maybe. The P3 will tune to the K2 IF frequency, but the K2 does not have an IF output. Clifton Laboratories used to have a Z1-K2 buffer amplifier to bring the K2 IF out to the rear panel without loading the K2 IF system, however, Clifton Labs

Re: [Elecraft] K5P Palmyra Dxpedition on the air with Elecraft rigs

Too bad they didn't take some decent antennas too. On 1/14/2016 7:07 PM, Eric Swartz - WA6HHQ, Elecraft wrote: K5P Palmyra Island is on the air with with K3S transceivers, P3s and KPA500s. See: http://www.dxsummit.fi/#/?dx_calls=K5P and http://palmyra2016.org Pic of K5P op positions in

Re: [Elecraft] K5P Palmyra Dxpedition on the air with Elecraft rigs

I’m really happy they took omni directional vertical antennas along. For most DXpeditions that use directional antennas, they never beam to my direction (understandably, as we are thin on the ground in Africa). We at last have a fighting chance to get in the log, and it levels the playing field,

Re: [Elecraft] 10 MHz Reference Oscillator

On 15-10-31 02:40 PM, Bob W7AVK wrote: For evaluation I purchased last spring directly from China one of the BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was $125. [snip] Found the unit works great as a master reference for not only the K3 but lab gear like counters and

[Elecraft] K2 and P3

Can I use my P3 with a K2? If so does it require a modification to either unit? Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Wide CW Signals

I have a screen capture from the P3 with a CW signal about 15KHz wide during straight key night. He was calling CQ, but I didn't copy the call sign. I suspect a boatanchor in very poor condition. 73 Bill AE6JV On 1/14/16 at 8:48 AM, n...@n5ge.com (Amateur Radio Operator N5GE) wrote: Is

Re: [Elecraft] Wide CW Signals

They're rotten. Nothing new tho. http://www.arrl.org/news/the-old-man-rotten-damped-spark-stuff On Jan 14, 2016, at 9:48 AM, Amateur Radio Operator N5GE wrote: > Is there something wrong with my P3, or are all of those extremely > wide raged CW signals I see in the DX

Re: [Elecraft] Wide CW Signals

On Thu,1/14/2016 10:17 AM, Fred Jensen wrote: I think your P3 is OK. I believe they are, for the most part, really wide. Yes and no. We must learn to understand the P3 display. It reads the voltage at the antenna input vs frequency. A stronger signal produces more voltage at every

Re: [Elecraft] K3 For Sale

The K3 has been sold pending funds. Joe N9VX On Thu, Jan 14, 2016 at 10:38 AM, Joe Word wrote: > For sale Elecraft K3 100 watt version in excellent condition, no > scratches, from a smoke free home, serial number 5429. Has optional KXV3A > Interface (Rx Antenna ports,

Re: [Elecraft] Wide CW Signals

I think your P3 is OK. I believe they are, for the most part, really wide. Since I've been operating remote to W7RN with a very high coefficient of airborne aluminum, I've discovered that the better the antenna, the high the Key-Click volume on the band. 73, Fred K6DGW - Northern

[Elecraft] FOR SALE: K3/100 + new synth + ATU

Had a couple of bites, but nothing firm yet. K3 - 2.7 kHz 5-pole SSB/CW filter - 100W PA (KPA3) - 100W ATU (KAT3) - KXV3A - transverter/receive antenna interface - KSYN3A upgrade (new synth which is shipped with all K3S radios) Mods have been completed to bring this up to spec. S/N 110.

Re: [Elecraft] Wide CW Signals

I think that can generate x-ray bursts as well. On Thu, 14 Jan 2016, Vic Rosenthal 4X6GP/K2VCO wrote: My guess is that they are that bad. Luckily, the ones that are hot-switching their relays won't be on the air for too long. At least, not with high power. 73, Vic, 4X6GP/K2VCO Rehovot,

Re: [Elecraft] OT antenna question -- solved, soon to be fixed

I asked my XYL to press the key and watch the SWR meter, and to let go when it hit 3:1. Then she ran out and waved to me on the roof, at which point I went up the ladder and felt the bolts. Very high tech. If I'm right that it's the bolt material, just changing to brass bolts should work.

Re: [Elecraft] Wide CW Signals

I've also been chasing NPOTA stations, most of whom are on 20 SSB. It is hard to believe until you hear one but there are fools running 12 KHz wide AM there. On Jan 14, 2016, at 9:48 AM, Amateur Radio Operator N5GE wrote: > Is there something wrong with my P3, or are all of

Re: [Elecraft] OT antenna question -- solved, soon to be fixed

I meant to reply to this query earlier, but got sidetracked. What I was going to suggest was that you look at the interfaces between stainless steel and aluminum. They are potentially problematic, because SS and aluminum have very different galvanic potentials, and “in the presence of an

Re: [Elecraft] OT antenna question -- solved, soon to be fixed

Interesting. My SWAG was the obvious transmission line/feed point impedance mismatch, but I would have never thought about the fasteners being the issue. I'll be reading up on eddy currents now and how they apply to impedance. Is it possible that it's not actually the ferrous materials and the

Re: [Elecraft] K2 and P3

I wonder if it would work in fixed mode or just in tracking mode? I know the K2's CAT command set is a subset of the K3's. It would be interesting to hear from someone who's tried it. Vic 4X6GP/K2VCO > On 15 Jan 2016, at 4:56 AM, Don Wilhelm wrote: > > The answer is

Re: [Elecraft] K5P Palmyra Dxpedition on the air with Elecraft rigs

On Thu,1/14/2016 7:31 PM, Wes (N7WS) wrote: Too bad they didn't take some decent antennas too. The ones they're using on 160M damn sure work -- top 160 op and DXpeditioner N5IA said they were loud at his QTH for most of the night the first night they were on. Tonight, they're loud here, and

[Elecraft] keys by VE3GHN

I purchased a key make by VE3GHN at a flea market and it is a really nice straight key. Made of brass and on a wooden base. Frankly it has become my favorite straight key. I have seen only one other example of his keys on the internet. If anyone has pictures, descriptions, etc. I would

Re: [Elecraft] K2 and P3

Nope, tracking mode only. Alan N1AL On 01/14/2016 10:06 PM, Vic Rosenthal wrote: I wonder if it would work in fixed mode or just in tracking mode? I know the K2's CAT command set is a subset of the K3's. It would be interesting to hear from someone who's tried it. Vic 4X6GP/K2VCO On 15 Jan

Re: [Elecraft] [PX3] - symmetrical reflections about the center point

Hi Kevin, Try removing each end of the IQ cable between the KX3 and PX3 and firmly re-inserting it. What you are seeing usually is the result of one end not being fully inserted in the jack, leaving one of the IQ lines open. Eric /elecraft.com/ On 1/10/2016 4:42 AM, kevino z wrote: Not

Re: [Elecraft] Wide CW Signals

As do many, I love looking at old gear and I marvel at the engineering skills of those who came before us youngsters, however, to use them on 20M in todays' conditions is nothing short of shameful. 15Khz wide, scratchy hard to listen to audio simply adds to the QRM and uses unnecessary

Re: [Elecraft] Wide CW Signals

In the interest of reducing list overload, lets end this thread at this time. Lots of good replies already and a ton of traffic. 73, Eric List modulator /elecraft.com/ __ Elecraft mailing list Home:

Re: [Elecraft] [PX3] - symmetrical reflections about the center point

Thank you - that did it - The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence. > On Jan 14, 2016, at 14:55, Eric Swartz - WA6HHQ, Elecraft > wrote: > > Hi Kevin, > > Try removing each end of the

Re: [Elecraft] Wide CW Signals

Those extremely wide ragged looking signals are probably all the hounds chasing the DX fox. You are seeing multiple signals, not one ragged one. Buck k4ia K3 #101 Honor Roll 333 8B DXCC On 1/14/2016 11:48 AM, Amateur Radio Operator N5GE wrote: Is there something wrong with my P3, or are all

[Elecraft] Fw: important message

Hello! New message, please read davis...@vcn.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] OT antenna question

This is good advice. Ceramic capacitors can have very low loss - it depends on the dielectric used. Smaller value NPO (zero temperature coefficient) types tend to have the lowest loss. Large value X7R, Z5U, etc. types have very high loss and are generally unsuitable for any high-current RF

Re: [Elecraft] OT antenna question

When I updated my 2 tuners, I used some doorknob style capacitors, of Russian source I presume, which I purchased via E-Bay. Something like 5 for $20.These were 470pf units rated at 16KV.Don't be mislead with the voltage rating, as it the current handling ability being the key for RF

[Elecraft] K3 For Sale

For sale Elecraft K3 100 watt version in excellent condition, no scratches, from a smoke free home, serial number 5429. Has optional KXV3A Interface (Rx Antenna ports, Transverter Ports and IF Out) and the stock 2.7 filter. Comes with manuals and power cord. $1900 shipped in CONUS. Payment by

Re: [Elecraft] Wide CW Signals

Depending on the radio they are using, some are really nasty! And with some that seem to run their radio in QSK mode, but without a QSK qualified amp, that makes things worse as they are likely arcing and sparking the relays. Nothing like a good old spark gap transmitter to eat up lots of

Re: [Elecraft] Wide CW Signals

I have a 1967, 7.2 liter, V8, all original Buick Riviera, why, because it is noisy and probably does not meet emission standards should I relegate it to the musem? It is a thing of beauty admired by all, and no one cares about the consumption or the mileage on the tyres. If it were not for that