Re: [Elecraft] Elecraft Digest, Vol 141, Issue 37

Bob VE2AXO ve2...@videotron.ca > On Jan 26, 2016, at 1:42 PM, elecraft-requ...@mailman.qth.net wrote: > > Send Elecraft mailing list submissions to > elecraft@mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit >

Re: [Elecraft] Seeking loop Antenna Parts

For the rope, try qualitynylonrope.com  I'm not sure if they have grey or brown but I bought a 500ft spool of 3/16"  black polyester for $42.  AND they have free shipping for orders over $25. Russ, N3CO From: Clay Autery To: elecraft@mailman.qth.net Sent:

Re: [Elecraft] Competition from ICOM?

Regardless of the make/model/cost. I've not had a radio company yet to give the quality and quantity of service that Elecraft has delivered to me personally. The day that radio costs get to the point of being disposable we'll see the quality and quantity of support drop to primarily community and

Re: [Elecraft] K3: roofing filter configuration settings

Filter bandwidth is defined by two points either across the top or at the knee of the filter. If the knee is 250 Hz wide at the 3 dB points then measuring the 6 dB points may be 370 Hz wide. So without the position of the filter where the measurement takes place, the number relating to

[Elecraft] Wanted (K1). kTS1 bracket.

Looking for KTS1 bracket. Contact off line. 209.601.5354 -- View this message in context: http://elecraft.365791.n2.nabble.com/Wanted-K1-kTS1-bracket-tp7613866.html Sent from the Elecraft mailing list archive at Nabble.com. __

[Elecraft] 12 meter K3 RFI from nearby FM station

I had been noticing some RFI on 12 meters for some time that I initially had thought was power line noise. My use of 12 meters is seldom so it wasn't very high up on the list of things to track. When I was reminded of it while listening for VP8STI recently, I did a little more snooping and

Re: [Elecraft] Competition from ICOM?

Jerry, So pleased you are happy with your purchase. Michael- KD8TUT On 2/10/2016 9:06 AM, Jerry Moore wrote: Regardless of the make/model/cost. I've not had a radio company yet to give the quality and quantity of service that Elecraft has delivered to me personally. The day that

Re: [Elecraft] 160 meters RX antenna for K3 advice

Regardless of which RX antenna you chose make sure to detune your transmit antenna when receiving. This is especially important on a small lot where adequate separation is not possible. 73 Jim ab3cv On Monday, February 8, 2016, Joe Moffatt wrote: > I am needing advice

Re: [Elecraft] 160 meters RX antenna for K3 advice

John, The K3 receiver is switched to external RX antenna port (RX ANT IN on rear panel) when you will select it by RX ANT button on the front panel. In that case your K3 is transmitting to one of the main ANT1 or ANT2 ports and it receiving from RX ANT IN port. ( we are talking about the main RX)

[Elecraft] K3s Digital mode fun

I stared playing with my Raspberry Pi running Noobs Debian and FLDigi. I have to say I'm very surprised and impressed at how well it works. I'm in the process of buying the newer/faster version and a metal shielded case. The Plan is to mount the RASPI case inside a rugged enclosure having a +12v

Re: [Elecraft] K3: roofing filter configuration settings

What the K3 contesters around here have done with the "400" and "250" roofing filters is assign them 450 and 350. For someone running in a contest, those are meaningful settings where is is *desired* to have the DSP and roofing skirts concurrent for sharp adjacent channel rejection. As to where

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Jon, I had a similar problem with a 50 kW AM BC station a few miles away. It turned out to be strong enough to override the bias in the K3's T/R switch. I built a high-pass filter which solved the problem. You would need a low-pass filter in your case. Make sure it can handle 100w, because

Re: [Elecraft] K3: roofing filter configuration settings

This sounds like a great idea. I used Inrad 250Hz filters in my Yaesu FT1000MP Mark-V and they worked great on RTTY but I found the 250Hz setting to be too narrow on my K3S. Is anyone doing this? John KK9A RLVZ at aol.com RLVZ at aol.com Wed Feb 10 00:05:30 EST 2016 A question regarding

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

A single frequency issue like that also can be handled with a simple trap. A small coil with a capacitor across it tuned to the station's frequency at 91.1 MHz in series with the center conductor of your coax. 73, Ron AC7AC -Original Message- Jon, I had a similar problem with a 50 kW

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Thanks for the tips. Any filter likely would have to be inserted internally, since I am getting this RFI without any antennas connected to the radios.Unless it is coming in on the 12v power cord, which is still a possibility. I only tried a couple ferrites and they may not have been the right one

Re: [Elecraft] Seeking loop Antenna Parts

On Wed,2/10/2016 4:41 AM, Don Wilhelm wrote: Clay, You should be able to find suitable pulleys and cord at a marine supply store. Pulleys yes. Cord at a marine store will be expensive. Here's a link to the company that makes great antenna rope that is resold by several large ham vendors.

[Elecraft] Competition from ICOM?

I agree fully with Jerry (his message below). Good service costs money, which can be supported only through service-based charges or product revenues. Including service costs in product pricing acts as a form of distributed-premium insurance for all of us. So, while in my view Elecraft

Re: [Elecraft] K3s Digital mode fun

Jerry, This setup sounds interesting. I recently bought the most recent RaspPi and thought about using it to replace my laptop for portable use. However, KVM considerations keep me on the laptop for that purpose. How do you plan to handle those needs for your mobile RaspPi implementation? Thanks

Re: [Elecraft] 160 meters RX antenna for K3 advice

In suburbia Houston, I was fortunate to have some nice very tall pine trees in which I had an inverted L with one elevated radial (up 20') bent to fit the 60' x 90' lot. It was fed through a ferrite bead balun. Power output was 600 watts. The rx antenna was a K9AY and one side of the rx antenna

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

An electrical 1/4 wavelength of coax as an open stub at the FM frequency, connected using a T at the receiver input, will notch the FM TX signal. It won't attenuate other frequencies across the ham bands including 6M. Plus one can transmit with the stub arrangement in place. 73 Bob, K4TAX

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

On 2/10/2016 7:19 AM, Vic Rosenthal 4X6GP/K2VCO wrote: > You would need a low-pass filter in your case. Make sure it can handle > 100w, because you must connect it in the main antenna path -- the RX > in/out path is before the T/R switch. Using a low-pass filter on the output of an HF

Re: [Elecraft] Seeking loop Antenna Parts

Copper is fine for conductivity but: multistrand copper coated steel is longer lasting. Just remember this when you start trouble shooting strange swr in a couple of years. Copper breaks so easy.Go to the Wireman.com for some good wire. NE7LS On Feb 10, 2016 1:59 AM,

Re: [Elecraft] Competition from ICOM?

Yep, I'm saving up for the subRX and 2 filters (2.8 upgrade and the 400hz). Jerry Moore CDXA, INDEXA, SKCC, Fists AE4PB, K3S - S.N. 010324 http://www.qrz.com/db/AE4PB An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and Patriotic. -Original Message- From: Elecraft

Re: [Elecraft] Competition from ICOM?

On Wed,2/10/2016 5:01 AM, Michael Cozzi wrote: My hope is that the 7300 is an excellent radio- so that it drives the price down for some of the radios I want to own. From my perspective, it seems like the cost of radios is driven primarily by what it costs to build, sell, (and with some

Re: [Elecraft] Seeking loop Antenna Parts

In the Caribbean the sun and salt spray gives short life to most wires. I bought on eBay several years ago stranded silver-solder tinned copper wire with a Teflon coating. It doesn't seem to have stretched much and the Teflon coating is holding up very well. I used #14 on 160M and #12 on 80M.

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

I didn't notice that you said you get it with no antenna. That does make it more complicated. The fact that you get it on the main but not the sub points to the T/R switch, since the sub receiver does not go through the T/R switch if the sub is set to AUX to use either the non-transmit

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

What power are you running?  Try an experiment by turning the power level down or up thereby switching between the LPA and the KPA3 to see if this changes the intermod level. This may narrow it down to the TR switch.   I have had a similar problem with intermods between a couple of local AM

Re: [Elecraft] Competition from ICOM?

I will add, that the KX3 is a really good value for a $1600 (kit) radio. (Filter, tuner, battery, Key & Mic included, but no 2M option.) But going to 100W does drive up the price quite a bit. 73 Bill AE6JV On 2/10/16 at 9:50 AM, j...@audiosystemsgroup.com (Jim Brown) wrote: My advice is that

[Elecraft] OT: Good NAQCC YouTube video

A new informational video about the North American QRP CW Club has been posted on YouTube: https://www.youtube.com/watch?v=WPRPJEgpw9w I think that it is well worth viewing but in the interest of full disclosure I have to admit that I am the

Re: [Elecraft] Seeking loop Antenna Parts

One point to consider if running the antenna wire through a pulley. It will work back and forth in the wind and as trees move. The constant flexing will take its toll on the wire. A stranded wire with insulation I have found preferred and lives longer.Also, use large diameter pulleys to

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Hi Jon, What you experience is mixing of the FM BC frequency with the 3th, 5th, 7th etc. harmonic(s) of the K3's VCO. If the mix product result is 8,215 Mhz you can hear it. I'm 3 km away from a BC tower hosting 10 station with >20kw each. Used SDR-radio on the K3-IF at 8,215 Mhz to identify

Re: [Elecraft] Seeking loop Antenna Parts

I never had a problem with THHN, but stranded copper weld had a very short life in Aruba. John KK9A - P40A N2TK, Tony tony.kaz at verizon.net Wed Feb 10 14:00:43 EST 2016 In the Caribbean the sun and salt spray gives short life to most wires. I bought on eBay several years ago stranded

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

A long time ago, I visited the transmitter room at the top of One Shell Plaza in Houston. There were nine 100 kW FM transmitters on the same antenna. The RF plumbing was something to behold, with big stubs like that all over the place. wunder K6WRU Walter Underwood CM87wj

Re: [Elecraft] Seeking loop Antenna Parts

The rigging you describe is almost exactly what I am planning. I can replace broken 14 AWG THHN 3 times for the price diff... IF it breaks... and I will simply use a non-stretching down-line on the tension weight and monitor its descent toward the ground to determine if and when to trim the loop

Re: [Elecraft] Seeking loop Antenna Parts

Yes, with copper weld it is copper plated over steel. Once the copper gets pitted or scored, the elements can get to the steel core, it will rust, expand under the copper causing the copper to further shed and the steel will rust and break. If one must uses solid or stranded, hard drawn is

Re: [Elecraft] Seeking loop Antenna Parts

That support rope Jim referenced has done a great job here for a number of years supporting wire antennas over 100 feet long hung in tall fir trees. I did provide strain relief - a pulley at one end attached to a weight so the tree can move freely. We do get winds gusting over 60 mph here most

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

I agree. Even better. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX Sent: Wednesday, February 10, 2016 9:18 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 12 meter K3 RFI from nearby FM station An

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

I easily could have misread the original emailed problem, but he included the note that this RFI occurred with all antennas [and I guess other cables] disconnected which is very strange indeed. If that is so, then I doubt stubs/filters on the antenna circuits would cure the problem. His list

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Since the problem occurs without an antenna connected, it is a version of the "RF in the shack" problem, although the RF field is coming from the nearby FM station rather than the classic situation where the transmitted signal is the source of the RF. Jim makes some very good suggestions for

[Elecraft] make a statement

Dear Sir, How do you enter something of all to read about? Thank You wb2pdw __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

[Elecraft] congradulation clay

congradulation clay! good luck! wb2pdw 73 __ 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 hosted by:

Re: [Elecraft] make a statement

Vincent, You just do what you did on that post. Send it to the Elecraft reflector and it will be read by all subscribers. 73, Don W3FPR On 2/10/2016 7:39 PM, Vincent Diak wrote: Dear Sir, How do you enter something of all to read about? Thank You wb2pdw

[Elecraft] Seeking loop Antenna Parts

So, based on a brief survey today, my first "real" antenna will be a nominally horizontal delta loop, while I save for and get construction designs approved for my tower. I'm seeking some specific parts and "preferred" vendors: 1) 3 each, 3" / 75mm MINIMUM diameter "plastic" (UV resistant)

Re: [Elecraft] K3: roofing filter configuration settings

Hi Dick, Just do it. If you need a certain bandwidth for a certain mode, use the narrowest roofer you have in there; just like in any other conventional transceiver. So if you want 350Hz as bandwidth, use that 250 filter (which is actually 370). That's common sense. Don't let the 250Hz tag on

Re: [Elecraft] Competition from ICOM?

The fact that I made a typo doe not effect the gist of the question. I forgot - one has to be perfect to post here - otherwise all answers will only knit pick the query and not address the question. __ Elecraft mailing list Home:

Re: [Elecraft] Seeking loop Antenna Parts

Clay, You should be able to find suitable pulleys and cord at a marine supply store. I would recommend using hard drawn copper for the wire rather than THHN. You can find THHN at your local DIY store. For hard drawn copper, look at The Wireman www.thewireman.com. A 32 foot heavy duty

Re: [Elecraft] Seeking loop Antenna Parts

Clay I have rolls and rolls of thhn. As for pulleys and etc Home Depot can help. Keep it simple. It will work Better Hard drawn is totally not necessary for your loop. And it's expensive How are you feeding the loop? 450 or 300 ohm line is best. If your going to use it on multiple bands stay

Re: [Elecraft] Competition from ICOM?

Hi Bill, Thanks for posting. My hope is that the 7300 is an excellent radio- so that it drives the price down for some of the radios I want to own. I'm not into the knobbed radio tradition, so the 7300 isn't for me. But if it's great, we might see a little price drop on other

[Elecraft] WTB 15Khz Filter for K3 for FM

Hi Everyone We have a K3 with the KXV1 module for 2M in an existing K3. To run FM, do we just need to add a 15KHz roffing filter? If so, does anyone have one to sell that is sitting around collecting ham dust? Thanks Tom K9XV (W9VW)

Re: [Elecraft] WTB 15Khz Filter for K3 for FM

The filter is 13KHz and it gets installed in slot number one. On 2/10/2016 7:10 AM, Thomas Chance wrote: Hi Everyone We have a K3 with the KXV1 module for 2M in an existing K3. To run FM, do we just need to add a 15KHz roffing filter? If so, does anyone have one to sell that is sitting

Re: [Elecraft] Seeking loop Antenna Parts

On Wed,2/10/2016 10:37 AM, Nels Nelsen wrote: multistrand copper coated steel is longer lasting. Not in my experience -- my neighbor hung a dipole strung with copperweld (what you're describing, I think) in some trees with tension on it and with pulleys and weights to deal with tree sway. It

Re: [Elecraft] Seeking loop Antenna Parts

Clay Hard drawn, copper weld, copper plated steel stranded is all GOOD STUFF. BUT.. you DON’T NEED IT HERE! I live 12 miles from you as the crow flies. My 80 meter full wave loop made out of THHN has been up for 16 years and has never broken or developed high standing wave. I DO see some of

Re: [Elecraft] K3: roofing filter configuration settings

On 2/10/2016 11:12 AM, j...@kk9a.com wrote: > This sounds like a great idea. I used Inrad 250Hz filters in my Yaesu > FT1000MP Mark-V and they worked great on RTTY but I found the 250Hz > setting to be too narrow on my K3S. The INRAD filters are spec'd for -3dB bandwidth. This goes way back to

Re: [Elecraft] 160 meters RX antenna for K3 advice

V. Sent from my iPhone > On Feb 9, 2016, at 9:57 AM, Petr, OK1RP/M0SIS wrote: > > Hi Joe, > > an easy and cheap starting point (weekend project) is the W2PM Mini-Diamond > loop connected thru W7IUV preamplifier and KD9SV front-end saver to Ext.RX > ant port of your K3. >

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Yes, this hit me between the eyes as well. The K3 has Pin One Problems at many (most?) connectors, so RF current flowing on shields of cables plugged into those connectors will couple into the K3. I've been preaching to Wayne about Pin One Problems since 2004, when we met in Dayton. If the

Re: [Elecraft] Seeking loop Antenna Parts

Copperweld is "nasty" stuff IMHO. If you can support it so it will not flex, you can tension it greater than plain copper. But it 'remembers' the coils it had on the wire spool and will spring back to those coils if allowed to remain free and untensioned. If you pull it while it has a kink

Re: [Elecraft] 12 meter K3 RFI from nearby FM station

Open antenna connectors are like baby antennas. Terminate the antenna port in question before proceeding. Jim ab3cv On Feb 10, 2016, at 7:25 PM, Don Wilhelm wrote: Since the problem occurs without an antenna connected, it is a version of the "RF in the shack" problem,