[Elecraft] FS: KXFL3 Internal Dual-Passband Roofing Filter

I have a KXFL3 Internal Dual-Passband Roofing Filter that is excess to my needs. I ordered the KXFL3 without realizing my recently-acquired KX3 already had the filter installed. I only opened KXFL3 package to view the instructions, and then follow them just long enough to realize I already had t

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

Fred your close to CA and also perhaps you were mistaken for a Russian. You know how it is these days. Would tell a story but its too long and OT how I was mistaken for Russian spy in Shanghai in 1990, taxi driver got the idea and ratted me out. Carrying a telegraph key and papers to operate a

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

Ummm ... no. Nor is the wife going to buy it on a family car. Operating with my K2+Alexloop on a small hill in a local park once, I was approached by two Sheriff's Officers, one had his gun[or Taser] out. Someone had reported a spy, or CIA agent, onthe hill and they wanted to to see my ID. S

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

So I guess this wouldn't qualify as stealthy :) - 73, Russ - W9RB -- View this message in context: http://elecraft.365791.n2.nabble.com/Really-OT-Inside-the-vehicle-HF-antennas-possible-bonus-points-tp7632459p7632578.html S

Re: [Elecraft] OT A/C RFI

Hi Everyone, In the interest of reducing email overload for our readers, it is time to close this thread as we are over the OT posting limit of 5 to10 at most. Plesse self moderate in the future. 73, Eric Mooderator etc. /elecraft.com/ ___

Re: [Elecraft] KX2AT2 vs T1 Tuner?

That same "balun" (actually a common mode choke) will work the same with the internal tuner. In other words, if it is "good for the T1", it will also be "good for the internal tuner". A common mode choke at the antenna feedpoint will solve many problems. If the feedline does not run perpendic

Re: [Elecraft] OT A/C RFI

I had this stored on my computer. Good reading on this subject. http://www.arrl.org/forum/topics/view/46 - Roger W5RDW -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-A-C-RFI-tp7632552p7632575.html Sent from the Elecraft mailing list archive at Nabble.com. __

Re: [Elecraft] KX2AT2 vs T1 Tuner?

Internal tuner is very convenient with extra pluses of remembering setting and not requiring an extra battery. But with some antenna x freq combinations, SWR is sensitive to touch and a balun is needed - an extra weight. With T1, that balun could be a few turns of jumper made of RG-174 around a to

[Elecraft] FW: OT A/C RFI

More interest here than I expected on this, so I've decided to post my direct response to Erik here as well. Terry, WØFM Hi Erik, I just replaced my two 20 year old Lennox units with 4.0 Ton and 3.5 Ton Trane units. Before the installers left I asked for a chance to check the radios in the sh

Re: [Elecraft] OT A/C RFI

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Re: [Elecraft] KX2AT2 vs T1 Tuner?

I went thru the same thinking when I bought my KX2 — internal tuner versus external T1 tuner. The added and simplified convenience of the internal KX2 tuner won out over the price of the tuner. However, my T1 is still important — using it with my KX1 and Norcal 40A. But, I admit that they are

Re: [Elecraft] OT A/C RFI

We had a well for 38 years, went through three 4 HP down-hole pumps, and I never observed any RFI from it or the control/capacitor box at the well head. The 240 V service to the entrance was buried. The pump ran a lot when the irrigation system was on [making Pacific Gas & Electric very happy

Re: [Elecraft] OT A/C RFI

On 7/19/2017 7:52 AM, Clay Autery wrote: H Jim... I have a variable speed down-hole pump on my water well... reckon that could cause RFI via the AC wiring? The down-hole pump is 220VDC on dedicated circuit, and shack is on a separate dedicated circuit from same service with separate su

Re: [Elecraft] OT A/C RFI

This is gross over-simplification, but it is, sadly, the thinking of the EMC community and the regulations on EMC. I've written extensively on this, so won't repeat it here. Here's the most recent. http://k9yc.com/KillingReceiveNoise.pdf And, of course, k9yc.com/RFI-Ham.pdf VERY little RFI

Re: [Elecraft] OT A/C RFI

Frankly, I've never checked to see if the down-hole pump is an RFI source... Only use the well when I am outside for the most part... That's why I solicited Jim's opinion of the case. I'll have to run a purposely test. I would think I could filter at/near where the AC lines go in/out of the hol

Re: [Elecraft] OT A/C RFI

Variable speed drives on HVAC units are indeed prone to RFI generation. Five years ago I ordered a second TRANE HVAC for my home...identical model to the first EXCEPT the VDS was 3/4HP on the first and 1HP on the second. The first TRANE unit was and is dead quiet...no VSD interference visible

[Elecraft] AF1 For Sale

Mint condition Elecraft AF1 active audio filter in a W8FGU enclosure. Original Elecraft assembly and operating manual included. $65 shipped via priority shipping. Continental US only and USPS money order only. E-mail hotrod...@suddenlink.net with any questions. 73, Rod K5BGB __

Re: [Elecraft] OT A/C RFI

There's basically two types of RFI. Conducted --- Being noise/RFI traveling through the wiring thus via direct connection. Conducted RFI can be attenuated to satisfactory levels by including a power line filter in the system {preferably at the source}. The filter suppresses conducted noise le

Re: [Elecraft] OT A/C RFI

Clay, Given that the pump is far, far underground, as is most of the wiring, I would expect it to be a trivial matter to filter the AC line, which should be the only thing radiating... Was that the case for you? 73s and thanks, Dave NK7Z http://www.nk7z.net On 07/19/2017 07:52 AM, Clay Auter

Re: [Elecraft] OT A/C RFI

H Jim... I have a variable speed down-hole pump on my water well... reckon that could cause RFI via the AC wiring? The down-hole pump is 220VDC on dedicated circuit, and shack is on a separate dedicated circuit from same service with separate sub-panel. __ Clay Auter

Re: [Elecraft] OT A/C RFI

Please include me in a list of folks who wants to follow/contribute to this topic if/when it goes off-list. I am shopping for HVAC right now... __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 7/18/2017 9:00 PM, Dave Cole wrote: > When this goes off list please add m