The article was actually in the March 2016 QST. It was the 49er with the DDS VFO. The firmware can be found in the zipped folder posted on "QST in Depth" for that month: http://www.arrl.org/files/file

You may certainly still apply for your Secret Agent Number. I'll update the application form and get it to the WebMaster to put on the kit webpage. Give a couple of days for that to happen. Of the two

Gang, I'm going to take all further posts from me of this event over to the Bayou Jumper Group, so if you're not signed up there and want to keep tabs, join up at https://4sqrp.groups.io/g/BayouJumper

Hi Curt, I hadn't even thought about "London" being on SSB ! What fun ..... hey ( evil grin ) what about working on.... wait for it.... 7126 kHz, upper sideband ??! That'd give some of the 40m denizen

Oh my, I got my TLAs * mixed up..... Sir Richard was with SIS not SOE. That made a huge difference back in the day. N5IB * three letter acronyms

I'll post this also to the Bayou Jumper Group. Save the date - 20 Jan 2021 - 0000 - 0400 UTC IF ---- big IF ---- we can get organized fast enough, lets try to recognize the 127th anniversary of the bi

Hi Tim, Since you're not hearing any peak in background noise or signal when making adjustments, it's probably something in the LC Tee network, rather than in the SWR bridge or indicator circuit. Firs

Calling all Agents... How's this for an event to simulate how it was done "back in the day" We recruit a QRO station (biiiiiig honkin' leenyar) to be "London" "London" sits down on, say 7105 kHz, and

The question asked was, "why not just power the Bayou Jumper's oscillator, but not the PA, and just listen for the signal in the receiver?" The answer is - The Bayou Jumper does in fact work exactly t

A crystal spotter is just a simple oscillator which will emit a very low level signal when a crystal is attached. It's used to locate the crystal's operating frequency in a receiver, when the receiver

Mot a "mod" but rather an accessory... look at: https://qsl.net/n5ib/ or https://qsl.net/n5ib/Crystal_Spotter_Instructions.pdf Easy, easy scratch build...... y'all could lobby 4SQRP for a kit "^)) Jim

For those who may be contemplating some woodworking (or 3D printing ??) The exact dimensions of the front panel and the main PCB are: 7.225" x 4.850" (183.5 x 123.2 mm) There needs to be at least 28 m

Just a reminder ... in about 54 minutes a new revB Bayou Jumper will be on the air! Jan 2, 1400-1459 UTC, 7120.1 kHz Afterwards, from 1500-1559 UTC I will become K3Y/5, but using an old TS-430S. Jim,

Tomorrow (2 Jan) from 1500Z 'till 1559Z I will be one of the SKCC's K3Y special event operators operating as K3Y/5 on probably 40, 30, and maybe 20 depending on propagation. I'll be running 50+ watts

Hi Woody, I use a Weller EC1001 with a small conical tip for both SMD and for conventional thru hole PCBs. Temp generally set at 700F, using 63/37 multicore rosin flux solder. Heartily recommend the 6

My bench has been hosting a couple of Arduino projects, and a long neglected Raspberry Pi. The article in the recent QST has set me off to making a VFO with an Arduino NANO and a Si5351a. So far have

Y'all don't forget that the annual Halloween Zombie Shuffle is going on now. http://www.zianet.com/qrp/ZOMBIE/pg.htm I'll put the prototype Bayou Jumper on to call CQ BOO either 7122 or 7114 from 0200

Funny that the SSCPO topic should crop up. I just finished a little surface mount version of Dave's circuit. Decreasing the value of the resistors in series with the speaker and it performs quite nice

Update: it's amazing what you can learn just by "doing your homework" :^)) Scott (N3FJP) has in fact already implemented an "almost as good" feature for sending CW over the CAT connection to the Elecr

I should append a note about using the keying interface with rigs other than the K2... The 4N25 optoisolator's output transistor is rated at 70 volts C-E breakdown and 50 mA continuous collector curre