Do the CH340G chips work with the latest FTDI drivers? I've been using an XP laptop with my boards but want to use my new W8 laptop for my experiments. Mike N2MS

I have been using the Chinese clones with the CH340G chips instead of the FTDI chip with no problems. Available from several places for under $5.00 with shipping. DuWayne

Folks, I was thinking of purchasing a Arduino NANO 3.0 Compatible board from Marlin P Jones since they had it on sale for $6.99. I call up tech support to ask about the FTDI USB chip since I am

Forgot to add that the Crystal Test Fixture is also on the list for requests @ $4.00 Jim, N5IB

I've ordered the test run of the Experimenter Board. They should take about 2 to 3 weeks to arrive. During that time I can still accept requests for that board. An updated document is posted in the

Sorry, I can't order your board - although I'd like to. My Significant Other went on ebay and bought me... the AD9851 board. Sure it has slightly better specs, but the dimensions [and pinout] make

Thanks DUWayne & , I should have googled before putting fingers to keys. Slap on wrist with wet bus ticket. I was thinking in terms of SBB to AM. Might be feasible. frequency

The requests for experimenter boards are closing in on the century mark. With this many boards (and $$), I don't want to risk messing it up - hi - so I'm going to get a batch of 10 made, and verify

It was patented by TenTec in 1988 (US patent #5051711) commonly known as the Jones filter after the designer. It is used in many of the TenTec transceivers. Also used in several of the

Thanks Nick, Didn't expect I would have been first to think of idea. Cheers, Will On 15/09/15 10:41, Nick Kennedy kennnick@... [PHSNA] wrote:

Jim Kortge K8IQY did that pretty effectively in his famous 2N2/40 transceiver. You can check it out here. Not sure about the termination effects. http://www.k8iqy.com/qrprigs/QRPRigs.htm 73-- Nick,

Would it be practical to use varicap diodes to vary bandwidth of xtal filters? Instead of using fixed value caps it is obviously possible to replace or use in parallel with fixed capacitor between

My apologies to the group. I forgot to put my direct e-mail on the "last call", so a bunch of replies to the group have shown up. Reply to n5ib (at) juno (dot) com if you want an experimenter

Did this project ever take off? Did anyone else try the Peregrine PE4302 attenuator chips?? My lab needs attenuators.. Was thinking it would fit into my PHSNA box.. Any thoughts? 73, Gary WB6OGD

There's enough interest (see the Poll) to order at least a batch of 40 of the experimenter boards. Looks in the Files for "DDS Type II and Arduino NANO Experimenter Board.pdf" for details This is the

That was a very logical guess, Jim. However, I could not find any errors of the type mentioned, even after going over the module with a 10X jeweler's loupe. So, I am proceeding with the next step

The Si5351 is a very nice little chip for many purposes, its main drawback for use in the PHSNA is that its output is a square wave instead of the sine wave from the AD985x. Ashar Farhan used a

Hi Jim, What about using the Si5351. Check out http://qrp-labs.com/synth.html would this work for the PHSNA? john kg9dk

A project that has been back-burnered for quite a while is heating up. I've been wanting to use what we've learned here with the PHSNA and apply it to some other projects. I've been planning to do a

HI John, I'm with Jim on this. A dry joint or possibly a very small bead of solder shorting traces or pins on DDS chip. Hope its not the module. Cheers, Will