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Stainless steel tweezers There are two types of stainless steels; 300 and 400 series. One is magnetic and the other is not magnetic; the 300 series are the non-magnetic ones. Regards, Walt K3ASW

Hi Everyone The uDCR2 worked so well I thought I'd have a go at an SSB version. It uses the phasing method of image rejection. The PCBs are here and I've started building. This is the filter response:

BZZZZZZZZZZZZZZZZZZZZZZZZTTTTTTTTTTTTTTTTTTTT!!! Wrong answer Steve.? :-) I hope that I mentioned in the write up that I changed it to 10K.? Purpose?? To lower the operating voltage of the Colpitts

The schematic still has a typo--R1 should be 47 ohms, not 10 k ohms (other than the crystal which is mentioned).

Hi William, I feel your pain as a Linux (and Mac) user. You can however run Elsie under Wine on Linux, so no need to look for any other tools. Hope that helps, Karl Heinz - K5KHK

Gang, 1.? I was joking the other day about the SMD build of the uni-VFO and how I set the world record for a flying diode.? And I said I didn't need a diode. The village idiot strikes again.? I

Real engineers go to great lengths to do less work. 73, Mike AF7KR

Hi Steve, Which software did you use for the crystal filter design? The topology with the capacitor T in the middle is new to me. 73, Mike AF7KR

Doing FM using 5351 is a bit more involved. Am or DSB or SSB is actually about the same level of effort. Me I'd put a SSB radio in it at the 1Watt level as that is easy power and easy on batteries.?

You're welcome.. ..it comes from years of laziness and sloth! -- William, k6whp -------------------- "Cheer up, things could get worse. So I cheered up and things got worse."

That's a cool trick! Thank you! 72 de KD0FNR Hamilton

Thanks for the link. I like the feature where they can calculate filters using standard electronic component value. Mike N2MS

Sent this on to Neville, ZL2BNE, who has been helpful in my tussle with a 20A rig. Thought you all might enjoy this.. Dug this up while messing about with the 20A and the LPF and such. While I plan to

Hi Nick, Do you have a 100nF cap between the VTune pin and ground? (There is an extra cap in each kit that you can solder across those pins on the VFO). What value of potentiometer did you use? Higher

I've got one of those Uni-VFOs (and another one still in the paper bag, waiting to be soldered). I think it's a clever project and the small size, use of a pot for tuning, and configuration set by

Hello Albert, I built something like you're describing a number of years ago. I had some hamfest flea market crystals, 3rd OT, for 50.245 that I wanted to do something with. The receiver section was

Hey, Allison! That was a supremely minimalist self introduction! It's nice to have super-experienced folks lurking in the group. Welcome, Kirk, NT0ZRochester, MN My book, "Stealth Amateur Radio," is

This is my storage for leaded components. Trays are 30 x 42cm, 2.2 or 5cm inner depth. In the case of resistors, the classification is not comfortable, 6 values (e.g. 10 12 15 18 22 27) in the same

Configured for 40 meters as shown. Schematic attached. Features: 1. Triple tuned bandpass filter before mixer 2. 2SC3357 post mixer amp biased to 40mA 3. 6 pole crystal filter @ 12.288 MHz 4. Carrier

This is arduino library for dra818 modules https://github.com/fatpat/arduino-dra818 -- 73 Barb WB2CBA