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Re: QRPGUYS
Not to worry, you'll get your order. They only ship once a week and if you order on the same day as the pickup, chances are it will be a week for the order is shipped. That said, they are as reliable as a sunrise. Jack, W8TEE
On Thursday, April 11, 2019, 9:35:57 PM EDT, Gary Bernard via Groups.Io <garybernard2@...> wrote:
Kinda off topic but, has anyone had any experience with QRPGUYS? I placed an order, it's paid for but I have heard nothing in over a week.
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Re: A somewhat more complete description of my (ab)use of the QCX-17 and QCX-80 transceivers
n4qa at_hotmail.com
That's pretty much it, Dave !
I'm keeping a couple of fingers on Q1, Q2, Q3...so far, so good. Supply voltage = 13.8 VDC Power output level somewhat different for each band. FB on Forest We might try a Q on 60m sometime. Tnx & 72 / 73, Bill, N4QA |
Re: A somewhat more complete description of my (ab)use of the QCX-17 and QCX-80 transceivers
n4qa at_hotmail.com
Well, well, well !
Just told my QCX-17 that it's a QCX-60 and, WHAMMO ! It just received its first RBN spot on 5331 kHz from KM3T in New Hampshire, I think it is. Don't worry, keeping a watchful eye on the spectrum analyzer... That 60m Cauer filter is doing a great job ! And, just listen to WWV on 5000 kHz and all those AM SWBC stns ! 72, Bill, N4QA ps let's see, 15m, 17m, 20m, 30m, 40m, 60m...a six band rig so far ! |
Re: A somewhat more complete description of my (ab)use of the QCX-17 and QCX-80 transceivers
Bill, You have external filtering, you tell your QCX-17 that it's something else, and you go to the frequency you want. Do I have that right, or is there more to it? How do you keep from cooking your finals? Did you reduce your power a whole bunch, like by dropping your power supply voltage? I thought I had read that Class E was single-band because of the tuned circuit. And off-band (or for sure, high SWR) drops the finals out of Class E, meaning they need to dump more heat... until they can't. I must have something wrong... did you figure it out, or just do it and get away with it? BTW, you're not far away... I'm in Forest between L'burg and Bedford. thanks, Dave N3AC On Thu, Apr 11, 2019 at 8:07 PM n4qa <n4qa@...> wrote: OOPS! |
Re: A somewhat more complete description of my (ab)use of the QCX-17 and QCX-80 transceivers
n4qa at_hotmail.com
OOPS!
There's also stuff in firmware that tells each QCX how to act ! ?So, I need to add 3) because?I just discovered that, by fibbing to the QCX-17 by telling it that it's a QCX-40, CHU 7850 kHz is now coming in like gangbusters ! therefore... 3) If all else fails, see if by telling your QCX-XX that it's, instead, a QCX-YY, as it were,? it gives you the wanted results ! Works for me ! 72 / 73, Bill, N4QA |
Would someone out there having a QCX-40 let us know how well it receives CHU on 7850 kHz ?
n4qa at_hotmail.com
The easiest way to give a listen for CHU 7850 kHz on a QCX-40 would be to store 7850 in one of the rig's Frequency Presets, and then transfer that to, say, VFO A.
Don't forget to add your cw offset for USB reception, so store 7850.7 etc, since CHU heavily attenuates its LSB. Also ensure you're set up for CW, as opposed to CW-R. Hw nw ? Tnx es 72 / 73, Bill, N4QA |
Will the VFO/Signal Generator + 12M LPF be suitable as LO for QO-100 LNB use?
¿ªÔÆÌåÓýHello all, As a U3S WSPR user, I 'am looking for the possibility to use the VFO/Signal Generator kit + 12M LPF for use as a sinus wave +/- 25 MHz. generator to act as a LO-signal of a satellite LNB for use with the Qatar-Oscar-100 (QO-100) AMSAT satellite. Does anyone has experience using this setup for use as a affordable 'GPSDO' (using the VFO/Signal Generator + the QLG1 (which I also own already ;-))? ? 73 de Frank PH2M |
Re: QLG1 - Clarification on what the green LED should do
Hi Steve What value have you got in the GPS threshold register, which is register 03? You need 0 in this register for best accuracy.? 73 Hans G0UPL On Thu, Apr 11, 2019 at 7:27 PM Steve Kavanagh via Groups.Io <sjkavanagh1=[email protected]> wrote: I confirmed this behaviour in a comparison with WWV at 5 MHz this morning. I started the Progrock without the PPS input. It started out about 10 Hz below WWV's carrier and drifted to a couple of Hz high over a few minutes. The QLG1 was then switched on. After s few minutes the Progrock stabilized at about 1 Hz below WWV, and then gradually drifted downwards, ending up between 2 and 3 Hz low after a half hour. |
Re: QLG1 - Clarification on what the green LED should do
I confirmed this behaviour in a comparison with WWV at 5 MHz this morning. I started the Progrock without the PPS input. It started out about 10 Hz below WWV's carrier and drifted to a couple of Hz high over a few minutes. The QLG1 was then switched on. After s few minutes the Progrock stabilized at about 1 Hz below WWV, and then gradually drifted downwards, ending up between 2 and 3 Hz low after a half hour. |
Re: U3S RF Power Transistor
Hi,
toggle quoted message
Show quoted text
His diagrams point to the low pass filters. Those are so very common they need not be included - merely mentioned. He mentions them:) 73, Bill KU8H On 4/11/19 12:12 PM, J68HZ wrote:
No harmonic filters? --
bark less - wag more |
A somewhat more complete description of my (ab)use of the QCX-17 and QCX-80 transceivers
n4qa at_hotmail.com
My completely stock QCX-17 has now made several contacts on the 20 & 30 meter bands.
Due to poor conditions only, I haven't yet had a QSO on 17 & 15, but have received many RBN spots of my QCX-17 on those bands too.
And,? the -17's receiver hears many great signals from 10000 through 15000 kHz so far.
?
All QCXs are essentially the same rig whose tuned circuits have been optimized for certain bands.
Two things I concern myself with when operating the -17 in this manner:
?
1)
Following the BNC output jack with an appropriate filter for the band I'm operating.
?
2)
Operating a VFO via internal or external means for reaching out-of-band frequencies - thankfully, Hans imposed no arbitrary freq limits.
?
BTW, my QCX-80 is much more limited in freq span.
I use it primarily as an 80m CW xcvr.
But the stock QCX-80 hears very well from, at least, 3300 to 5000 kHz. Well, that's my story & I'm stickin' to it... 72 / 73, Bill, N4QA |
Re: U3S RF Power Transistor
¿ªÔÆÌåÓýNo harmonic filters? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Moderator ¨C North American QRO Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] [mailto:[email protected]] On Behalf Of Andy Brilleaux via Groups.Io ? I made an RD06HHF external amp, for my QRP Labs rigs and for general use. |
I also see this as a party not a contest. So I was more interested in how many QCX have been worked by a station than the score. If you want a score, than couldn't it be? that participants give RST plus serial Nr. and QCX give RST QCX and are counted 3 points. Multipliers by DXCC countries.
Martin DK3UW |
Re: QRP rags to riches
#qcx
Egads! In a couple of years from now the C Programming Guide will be 40 years old! Man, I'm so glad I haven't aged during those years... Jack, W8TEE
On Thursday, April 11, 2019, 8:32:23 AM EDT, KD8CGH <rkayakr@...> wrote:
I was lucky. There was an extension computing center in the basement of my dorm at Case (not CWRU then) in '67 with keypunches, and a window with a reader and a printer maned by a bored student. I could pad down there in my jammies at 2 a.m. to do my homework. As I recall I was an expert at duplicating a punched card just past the character I was trying to correct. Then: Hand soldered a mole of connections to build a Digital Group Z80 (bus but not S100) with 2K memory and computer controlled cassette tape drives. Programmed Z80 assembler Commodore 64.? Programmed basic and 6502 assembler Commodore Amiga: bitmapped graphics, multiwindow multitasking UNIX like OS. Programmed Fortran and FORTH, wrote a programming column for AMIGA Project magazine. The AMIGA had a modern file system, visual editor, symbolic debugger and optimizer for FORTRAN. At work I had an IBM dumb tube and a user hostile programming environment (JCL, no tools).? I wrote a transient coupled heat transfer and chemical reaction FEA code for process optimization at home and convected it to work. With the help of a plant db expert the optimizer was hidden under a simple interface for cure press operators. First deployed in '86, it's still in use in plants. After that I convinced management to acquire some SUN workstations. That's when I started getting Jack's books that are still on my bookshelf and recently used. |