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Re: More help if possible please.
Hello to all, I reinstalled BAP on my Pi4+ and it is tx'ing fine. I haven't managed to sort out Conky yet but that is the plan for the morning along with a try at a fresh install of BAP for the 3B+. I
By EI7CLB · #104007 ·
Re: For Sale: 40, 30, 20, 17 Meter QCX+ Units
PP: K7TXA@... (this is my Idaho call and PP address; I used to be W6JHB when residing in CA, but I escaped!) :-) -- Jim / K7TXA Eagle, ID SKCC 10447 BUG 301
By Jim Bennett / K7TXA · #104006 ·
Re: QCX+ Variable Output Power for QRPp Operation
John, I made the mod mentioned above on an old 20 meter Classic QCX I use for experimenting. I fed the Emitter of Q6 with a separate variable voltage and left the rest of the radio running at 13.8
By Ronald Taylor · #104005 ·
Re: For Sale: 40, 30, 20, 17 Meter QCX+ Units
Jim, PP address please and thank you. Rhett [email protected]> wrote:
By Rhett, KB4HG · #104004 ·
Re: For Sale: 40, 30, 20, 17 Meter QCX+ Units
Hi Rhett - it¡¯s yours! PayPal is fine if you can do that. 73, Jim / K7TXA
By Jim Bennett / K7TXA · #104003 ·
Re: QCX+ Variable Output Power for QRPp Operation
The attenuator kit has a single bypass button that can be used for receive. Not automatic but usable. 72 Don ve3ids
By Don VE3IDS · #104002 ·
Re: What type of solder to use #qmx
Hi all, interesting topic / discussion. Coming to the end of 0.7 'unknown' reel of solder that has provided excellent results over several years (it was a big reel!) using a couple of soldering irons
By Nigel ZS6RN · #104001 ·
Re: QMX 20m RX fix #rcvr #qmx #20m
'Morning Dave It shows -7 however I am not sure how that is based. Here's the produced chart: Below is the original on this unit: I'm pretty sure that these displays are meant to be just relative
By Don, ND6T · #104000 ·
Re: QCX+ Variable Output Power for QRPp Operation
"KM3D - Harry 5:53am #103985 ( /g/QRPLabs/message/103985 ) ....? ?I also wonder what the output level would be with 7 volts running the radio. I did a few tests as I to set up my 20
By Bruce Akhurst · #103999 ·
Re: QMX 20m RX fix #rcvr #qmx #20m
Hi Don Sounds like a much simpler solution When you do an RF sweep of 20m what is the level of the sweep in the 14 mhz range... I think the best I got was -12 db with an external toroid and coil Dave
By VE3KCL · #103998 ·
Re: For Sale: 40, 30, 20, 17 Meter QCX+ Units
I would like the 17M radio is still available. 72, Rhett KB4HG [email protected]> wrote:
By Rhett, KB4HG · #103997 ·
Re: QDX L12 manual error? #10W_PA #qdx
Another nice one: QDX Assembly Manual for PCB Rev 5, Page 4: Beware that a 12V nominal batter will potentially be several volts higher when fully charged. I like beer batter on fish, but I don't like
By aa0jr Jakob <aa0jr@...> · #103996 ·
QMX 20m RX fix #rcvr #qmx #20m
Upon completion of my QMX (#331) build I found that the sensitivity on 20 meters to be quite poor, about -92 dBm (5.6 microvolts) for a Minimum Discernible Signal. A topic soon appeared on the forum
By Don, ND6T · #103995 ·
Re: For Sale: 40, 30, 20, 17 Meter QCX+ Units
The 20 meter rig has been sold; awaiting payment on the 30 meter QCX+. The 17 meter radio is still available. -- Jim / K7TXA Eagle, ID SKCC 10447 BUG 301
By Jim Bennett / K7TXA · #103994 ·
Re: QCX+ Variable Output Power for QRPp Operation
Here is a low priced attenuator kit. http://www.qrpkits.com/attenuator.html 73 Don ve3ids <chuck.salmon@...> wrote:
By Don VE3IDS · #103993 ·
Re: QCX+ Variable Output Power for QRPp Operation
John, Another safe and very flexible way to go is a step-attenuator.? This site has some good info on QRPp as well as construction of simple 43dB attenuator in steps of 1dB.
By Chuck - K3FLN · #103992 ·
Re: QMX help - damaged SMD capacitors #problem
I modify and repair boards routinely.? The pads don't need repair, just bridge them with wire. I would obtain some fine gauge wire, I use wire-wrap wire or single strands from stranded wire and tin
By Donald S Brant Jr · #103991 ·
Re: QCX+ Variable Output Power for QRPp Operation
John, if you are going to do this, I would recommend using a small variable power supply like one of the many made by companies like DROK. They are small enough to easily fit inside the QCX+ case. You
By Ronald Taylor · #103990 ·
Re: Class E Challenges #amplifier #qdx
What an interesting article (and new to me)!? I've made progress, but smoked my QRP dummy load before I could take measurements --- further results await a more capable dummy load. -- JimC (KQ7B)
By jim conrad <conr2286@...> · #103989 ·
Re: QDX High Band low power on all bands #qdx
Don, Congratulations on moving forward with your test gear. There are 2 points on either side of the push-pull PA that you want to measure:? The gate inputs and the drain output of the BS170s.?
By Evan Hand · #103988 ·