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On Sun, Dec 30, 2018 at 06:19 AM, w7hd.rh wrote: Keep in mind that SSB and CW have a 6dB advantage over all other modes.? They are highly preferred for satellite and moonbounce contacts, and often

Curt, Why even both with uBitx as your designing a one of and can do it more directly for the bands of interest. The real problem is Synth for LO and power amps as at those frequencies they aren't

Thanks Jerry. I'll look into those as well.

Dual TX and RX is a lot of circuits but fairly simple SSB.? Untill you hit 435 and 145mhz then it gets complicated and amps for that are never cheap even at the 10W level. The bigger thing is you

I ordered a boatload of them to go with the Raduino Clone kits I have to offer. Shipping to US from China warehouse was $1.40 US so I don't see where that would even present a problem. That was for

Christopher Miller 12:57pm???#63170??( /g/BITX20/message/63170 ) Might have been TEP, transequatorial with Gray line enhancement. IT could also be sporatic E. CW is hard ot

No. The ATMega328P has a 16mhz ceramic resonator, as shown in the Banggood photos. The CH340G has a 12mhz ceramic resonator of the same physical appearance. ?

This is because the CH340G serial chip has a build in Chrystal. it looks to me that this Banggood offer is not that cheap for US customers. No free shipping from CN warehouse. To get free shipping you

Hi guy, I used this design with input circuits only note U14 and Q8 for my alarm system. Above and below 3G module foot print are the solid state -logic foot prints i made for an unrelated project.

one can imagine how a ubitx? configuration could be applied to 144 and 432 MHz SSB, and support digital modes.? but its a decent amount of circuitry.? in support of satellite operation - better to

Well, technically you're right, it has a 16mhz ceramic resonator, not a crystal. The resonator is that little dinky thing just north of the square 32 pin processor chip in the banggood photos. That

Interesting experiment!? The uBITX receives nicely as is, at least on the bands that are propagating now.? I see it is a beefy, high current amplifier - 2n5109.? It is the same device as used in

Reading down the add, it appears that it is shipped without a clock crystal as well. Woody, KZ4AK --

For "short distance point to point data exchange", here's an interesting 100mW 434mhz transceiver: ? ??https://www.sparkfun.com/products/13910? That sort of thing is also available for the 915mhz

I have purchased using PayPal a couple of times [email protected]> wrote:

You didn't select free shipping! Roy WA0YMH

I am having trouble buying the above from India (HFsigs website). My debit card was not accepted. I paid with a credit card which seemed to be. When I had entered my details I got a message saying

Well, yes. But then the shipping is $2.50? Not such a good deal anymore.

Appropriate FET's can switch low level RF. But it's usually PIN diodes or relays when switching power at the output of a transmitter. Google "1n4007 as pin diode TR switch" for ideas on how it gets

This is k0mbt looking for a bitx > bitx qso. 73 Dave