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Re: QRP rags to riches #qcx
Well, if my dad were still here ( W4MAI - sk 2006 ), he could tell you about how a single 8-bit accumulator would fill an entire equipment closet :0) Many years ago, he worked for IBM? somewhere in
By n4qa at_hotmail.com <n4qa@...> · #33387 ·
Re: QRP rags to riches #qcx
Does mastering (= PHD) the 8088 count in the contesr? : o )) ham 1957 retired 1997 72 73 John N3AAZ
By John Kirby · #33386 ·
Re: Listening to WWV & WWVH on 5000 kHz this morning, on the QCX-80
Yes, "we" are. Simply put, it was fun discovering the parameters of, and avoiding running afoul of Hans' encoder debouncing state machine as I experimented with the "My_encoder_de_N4QA" PC app. 72 /
By n4qa at_hotmail.com <n4qa@...> · #33385 ·
Re: QCX Repair
And remember a few weeks ago a new build went thru this... with fried finals, the rx was deaf until finals were changed... receive signal was rf-grounded thru the damaged finals so "nothing" was left
By Dave N3AC · #33384 ·
Re: Panadapter #qcx
Simon, Michael, They will be IQ signals but the QCX is not intended to be wideband. I'd think C4,7,43-46 would really need reducing. 73 Alan G4ZFQ
By Alan G4ZFQ · #33383 ·
Re: Panadapter #qcx
Hi Michael, I've tried it from IC5 pins 1 and 7 and it did seem to be baseband audio at that point. I got at least 0 to 24kHz bandwidth feeding my homebrew panadaptor. It was a little experiment into
By Simon G0FCU · #33382 ·
Re: QSX display #qsx
And with VNC (built into Raspbian) you can operate remote from anywhere! I'm honestly surprised I'm not playing radio from work every day ?
By Michael N6MST · #33381 ·
Re: Panadapter #qcx
Hello, I was thinking that an add-on pan adapter would be a fun project to try. And knowing just enough to know that I know nothing about this, I thought I'd ask what may be a "simple" question. Can I
By Mike K6GTE · #33380 ·
Re: QSX display #qsx
One thing I was looking at was using FLDIGI running on a RPi3 as a ¡°front end¡± for the QSX. Hans says the QSX should interface nicely with JACK (Jack Audio Connection Kit). Coupled with a touch
By Michael Sharp <nexxusix@...> · #33379 ·
QSX display #qsx
Earlier today I was codgertating on "ain't it a shame the QSX is rolling out with an underwhelming display". But then I got to thinking abt my K3 and how rarely I actually touched the FP controls or
By Jack Brabham - KZ5A · #33378 ·
Re: QRP rags to riches #qcx
Garry, My coding wasn't nearly so interesting. I was building one of the first generation "Network Operations Centers" for the Telco? GTE of the SW in the 80's.?? We primarily did remote monitoring
By Jack Brabham - KZ5A · #33377 ·
Re: QRP rags to riches #qcx
Ten statement Fortran plus Fortran IV for the IBM 360, featuring the WATFOR and WATFIV compilers. 1st ed. 1970 - my senior year in high school. Hard to believe I was perusing that book nearly a
By n4qa at_hotmail.com <n4qa@...> · #33376 ·
Re: QRP rags to riches #qcx
Jack / KZ5A, It's more like riding a 'unicycle'!? I'm 'here' to save you from hours of frustration!? I have a box of IBM cards (new) and a FORTRAN coding ruler so you can find coding errors!? :)
By Garry48 · #33375 ·
QRP rags to riches #qcx
i finally got tracking on the replacement uP for my QCX40, looks like it will be here in a week or so.?? That shipment also includes a new QCX 20 to build after I get the QCX40 percolating.? Today
By Jack Brabham - KZ5A · #33374 ·
Re: Grounding shield of GPS cable
Many thanks for some great advice!? I have a dummy load and I need to get in the habit of leaving it connected until I'm really ready to go. -- Jim, KJ7EZN? ? 73!
By Jim - W7EZN · #33373 ·
Re: Qrp-labs and a Huff and Puff circuit board
Allison Agreed, my PLL reference was to the fact that there is a control loop but that it is slower than a conventional PLL. H&P is very useful if done properly, but can be a real nightmare if done
By Arv Evans <arvid.evans@...> · #33372 ·
Re: Qrp-labs and a Huff and Puff circuit board
Mike Several years ago when I was experimenting with H&P designs I found that a Vackar VFO was better for my H&P uses. In addition to being stable, the output is low impedance and seems relatively
By Arv Evans <arvid.evans@...> · #33371 ·
Re: Grounding shield of GPS cable
If you connect one end of a cable shield to ground, you create a Faraday Shield ( Google it ) and having only one end connected to ground prevents spurious current loops creating noise. You must of
By geoff M0ORE · #33370 ·
Re: Qrp-labs and a Huff and Puff circuit board
Mike, I've never measured it, not having ever used it for anything except 75M AM where it was a non-issue.? I usually monitored myself on a SDR and occasionally made minor corrections to stay spot
By Jack Brabham - KZ5A · #33369 ·
Re: Qrp-labs and a Huff and Puff circuit board
Thanks for that Arv. I don't know about moving the yahoo group as, really, how many people are going to use a huffpuff in this age of synths? I liken my interest in this area to a kind of boat-anchor
By Joe Street · #33368 ·