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Ken, there are some parameters in menu 5 that you can adjust (see Firmware manual http://qrp-labs.com/images/qcxp/firmware/1.07/OpMan107.pdf ), but my decoder works fine with the default settings. Try

Oh, I like the landscaping circuit option for outbuilding, small loads...For small IT loads, you could also consider PoE , particularly if we're taking a RaspPi node (with PoE hat)...Wayde Nie

Hi Dave Yes, they are vias. QRP Labs kits use 2 layer boards. The vias are necessary to connect the bottom and top layers of a signal trace as it is routed around the board and sometimes it has to

in the niche market of point to point microwave transport, filters are hand tuned as each filter has different band pass/band reject characteristics depending upon the type of radio being produced.

HF is particularly difficult because it covers many octaves. And in many cases can only be done by hand. Many physically big part filters need to be used to cover 2-30 MHz because filters work by

First Japan, and then China, crushed the US ham equipment makers. The speed with which old-line companies like Hallicrafters, National, E F Johnson, Clegg, etc crashed in the late 1960/early 1970s was

This question occurred to me because I've been watching the Antique Wireless, History of Radio series on YouTube. Fascinating...but the Ham Radio industry is littered with failed companies. My beloved

I don't remember toroids in my once owned low end Kenwood. Far east has firms that specialize in low cost inductors. My k2 has toroids, who knows how many I have wound, likely between 100 and 200.

Hi, I know we have many very experienced? people in this group. I see each kit usually needs the LPF filters tweaked for maximum output, etc. I look under the hood of ICOM, Yaesu, Harris radios which

The old tube rigs that are considered desirable have high price tags. But less popular ones can be affordable, at least if you find them from places other than eBay. At NEAR-fest recently, I saw a

I'd be interested to hear your calibration routine for "gently" ;-) -- Julian, N4JO.

Hi Dave I suspect what you're seeing are indeed the vias (as described by others), some of which may have been filled or semi-filled by the soldermask ink due to viscosity/meniscus effect. It's

My QDX arrived from Sedalia, MO today.? I have been to Sedalia many times.? They used to be famous for a hamburger topped with peanut butter called, the "Gooberburger."

Two things. I did all the electrical work in my home renovation - everything was solid and the inspector said he wished all the jobs were like that.. his work would be easier. Having seen some of the

We DIY 240V/60Hz all the time here in the US. Most places allow it but still do inspections. In Iowa, at least the county that Cedar Rapids is in, they require a homeowner to pass the journeyman's

Getting it built by Thanksgiving is really on me not the USPS. The USPS is slowing down by a lot, but it's not THAT bad yet. Chicago to here in Tucson area takes over a week, but I think a lot of that

Don, but are they connected on both sides? The larger ones are but most of the ones I pointed to do not. It’s almost like they were put there as tack points to keep the copper stuck to the fiber

We can probably all agree the topside. Dan -- Daniel Holmes, danielh@... "Laugh while you can, monkey boy!" -- Lord John Whorfin

We need to discuss which side of the road is safer to drive on, too. Phil, K3UT

I'm very excited about the IQ output! Question: What is the frequency range on receive? Is it also limited to 3.4-14.5 MHz? -- Ryan Flowers - W7RLF MiscDotGeek - QRP and More (Website) (