Re: [Elecraft] HELP! XFINITY SHUT OFF INTERNET DUE TO HAM ANTENNAS

I do apologize for contributing to this off-topic thread... A technical issue for cable modems is the uplink. For downlink, the cable modem system uses one or more "TV channels to sends its data on. There is encoding and all that but the signal isn't un-like a TV channel. The uplink is where

Re: [Elecraft] OT; large ferrite toroid core?

Hi Mike, Initial permeability can be computed from your values: Compute 4T permeability=1 (Lo) using core dimensions: Lo = 0.0004606 * Log10(OD / ID) * Ht * Turns^2 (Ht in mm) Lo = 0.0004606 * Log10(6 / 2.6) * 14.3 * 16 = 0.0383uH (Ht in mm) Initial Permeability ui = 6.6 / 0.0383 = 172 Fair-Rite

Re: [Elecraft] OT; large ferrite toroid core?

A nanoVNA is an incredibly capable, versatile, and inexpensive instrument (<$100) that can make these measurements when using proper technique and analysis.  They also work great as graphical antenna analyzers. Lou W7HV On Friday, October 22, 2021, 05:52:20 AM MDT, John Oppenheimer wrot

Re: [Elecraft] Through-hole Replacement for K3 Q5 (2N7002)

Hello Pete: I have some thru-hole 2N7000 in my junk box.  I can mail a couple to you if you want. Russ, N3CO On Thursday, October 21, 2021, 09:57:50 AM EDT, Pete Smith N4ZR wrote: The original surface-mount part seems to be back in stock in the US, but I'm afraid that what I need is a

Re: [Elecraft] HELP! XFINITY SHUT OFF INTERNET DUE TO HAM ANTENNAS

Folks, we are exceeding the OT limit for list postings on this topic. [THREAD CLOSED] Please take the discussion off list in the interest of relieving email overload for others. 73, Eric WA6HHQ List moderator, among other things.. *elecraft.com * > > _

[Elecraft] Two XV222 Transverters for Sale

Greetings, I have two Elecraft XV222 transverters for sale. Both have original manuals and have the crystal oven installed. Both are set up to work with 1mW drive from a K3, and both meet factory specs, according to my older but still pretty good test gear. Prices include shipping in the USA

[Elecraft] K6XX SMD Visible LED CW Tuning Indicator

Does anyone have one of these they’d like to part with, either built or still in kit form for the KX1 ?You can’t get this anymore, the two gentleman, Tom, N0SS and Ron, WB3AAL who sold the kits are SK.Contact me off line at ekac...@yahoo.com. Thanks and 72/73Ed KacuraN7EDK  Sent from Yahoo Mai

[Elecraft] Xfinity interference

Eric,  just went through the same thing here in Florida with Xfinity. They showed up claiming I was taking out a large area (10 block square) on their spectrum analyzer. Mine showed up on 16 Mhz up when I operated any band on any of 4 antennas. I was using my K3 KPA 500 combo. I worked with them