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Re: #qmx Antenna Tuner Can Kill PAs #qmx
I was the official 8" floppy distribution site for Kermit for CP/M-80 for a while. 8*) 73, Willie N1JBJ
By William Smith · #109722 ·
Re: QMX pre-flight check - incipient Q103 / Q104 short in buck regulator
Here is a picture of Q103 moved over just a little. Definitely no short to the Tab now and it was easy to do. Just remember to get the Tab hot enough to melt the solder before exerting pressure. 73
By Kees T · #109721 ·
Re: QMX new build - power output
As suggested in some other thread, I also have re-done L513 (for 20m) and L512 (for 40m) with one more turn, which added +0.5w to those bands. Now getting about 3.5 to 4w with 12v (my kit-built qrp
By Yoon KM6KJI · #109720 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Acoustic couplers anyone ? Back in the 80's the BBC would give time to transmitting software on their broadcast stations, since 1200bd AFSK tones fitted well in an AM bandwidth channel for what was
By - Andy - · #109719 ·
Re: Order confirmation
In my opinion, the impatient people are the ones that are impatient about my one and only single inquiry on the matter using the only means at my disposal to do so.? Also there is no obvious way to
By Jerry Moyer · #109718 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
On AX25 / KA9Q NOS etc. Used to do the same with 7+ or UUENCODE back in the day too. Great fun assembling all the bits that arrived and turn them into a binary file ;-) Anyone remember xmodem or
By - Andy - · #109717 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Even Gopher protocol service kinda string web browser/search engine before Mosaic! I was using this over a BBS service connecting wirelessly using a vhf handheld and Baycom 1200 bps AFSK
By Barb WB2CBA · #109716 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Cut my teeth on Minuet back in the day when 9k6 modems were classed as fast. https://en.wikipedia.org/wiki/Minnesota_Internet_Users_Essential_Tool Couldn't stand Internet Exploder with all it's
By - Andy - · #109715 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Or even the 'WorldWideWeb' browser by CERN? on the NeXT computer in autumn 1990 soon after to be available on X Windows (Unix). 73 de LA9XKA - Per
By Per - LA9XKA · #109714 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Yep, actually ‘92. Win 3.1, with the IP addin, and web browser from CERN (before Netscape) called Mosaic. Demo to my boss, he was unimpressed cause the only site we could reach was a weather map.
By Larry Acklin · #109713 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Or Mosaic Web Browser before Netscape or else! 73 Barb WB2CBA
By Barb WB2CBA · #109712 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
I remember Netscape from Windows 3.1. IIRC, there was also an early version of Internet Explorer also available.?? Lee KX4TT
By Lee · #109711 ·
Re: QMX pre-flight check - incipient Q103 / Q104 short in buck regulator
Kees, it has been my experience in the past that it's almost impossible, and quite risky, to move such solder-tab packages. They are simply too well thermally coupled to the junction and the
By Steve H · #109710 ·
Re: QMX pre-flight check - incipient Q103 / Q104 short in buck regulator
Personally I am all in favor of taking a mallet to the p.c.b..... then "the problem" will (most certainly) go away.... not-so-anonymous
By Bob Finch · #109709 ·
Re: QMX pre-flight check - incipient Q103 / Q104 short in buck regulator
Am I missing something here. The problem using manual and auto tunerscould be easily addressed using the venerable noise bridge for adjust the?tuner in receive mode. Once you tune out the noise as
By Chuck Moore · #109708 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Hans Are you able to suggest a maximum safe SWR for 12v 5W operation.
By Chris KB1NLW · #109707 ·
Re: Order confirmation
https://qrp-labs.com/status.html
By Mike Besemer - WM4B · #109706 ·
Re: #qmx Antenna Tuner Can Kill PAs #qmx
Hi Allison Is my memory deceiving me or do I even remember Netscape on Win 3.1 in '94? Three decades of web browsing! 73 Hans G0UPL http://qrp-labs.com https://buymeacoffee.com/g0upl
By Hans Summers · #109705 ·
Re: Order confirmation
Hi if its the same questions over and over that says their is a problem,?
By mick baldwin · #109704 ·
Re: QMX pre-flight check - incipient Q103 / Q104 short in buck regulator
My advice is: don't solve a problem you don't have. We know Q104 and Q104 are a little close, and a bridge can form across them. All boards are now tested here before shipment and fixed if necessary.
By Hans Summers · #109703 ·