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Date
Re: K5BCQ kits in BITX40 #bitx40
Kees mine show as shipped but so far haven't received anything yet.? That's why I was wondering how long the shipment takes. Doug referred to Informed Delivery bit that show only a package coming
By John · #51635 ·
Re: Building homebrew ubitx: Need pre-v3 schematic PDF. Also, source for 45M15 (45 MHz IF) filter?
Ashhar, ? ?I mentioned to Sunil about doing that for his nice cases. ie send me a bunch and save a bunch on postage and I could mail them from here cheaper. Once the one I ordered comes I can
By Bo Barry <bobarr@...> · #51634 ·
KD8CEC Firmware S-Meter usage
Just curious if many people are using the KD8CEC V1.07 or V1.08 firmware with S-meter support on the Raduino? Using the simple bar graph shown on their various displays and a diode/capacitor for
By Kees T · #51633 ·
Re: IFshift
Allison What is your opinion of using varactors ?in the crystal filter circuit to make it variable. -- Allen ?Merrell
By Allen Merrell · #51632 ·
Re: Different Encoder
Ray Thanks, I have been checking around on the optical and find that the 4.7k pullup is what others are using with the Arduino as well as an interrupt routine. I see where I also need to make some pin
By Allen Merrell · #51631 ·
Re: K5BCQ kits in BITX40 #bitx40
Hi Kees Have you receive my Paypal paiement now ? 73 QRO Gilles de F1BFU 2018-06-08 18:21 GMT+02:00 Kees T <windy10605@...>:
By F1BFU - Fr - 79 · #51630 ·
Re: IFshift
ok guys got an update on what i was trying to do. when adjusting the bfo in setup the frequency would change but not the shift on the if. but after pushing ppt button it would correct itself back to
By Eardan · #51629 ·
Re: IFshift
that sounds idea a good idea Allen, may do that later.
By Eardan · #51628 ·
Re: Different Encoder
I used one of the Chinese 400 ppr optical units in a 40/20/30 receiver I completed last month. I ended up skipping 12 pulses before taking action. This is roughly 32 ppr and performance is the same as
By rcbuck@... · #51627 ·
Re: CAT Control
The Nano clone that comes mounted to the stock Raduino board that comes with the uBitx and Bitx40 from hfsignals has a CH340 chip. All the $3 Nano clones that folks buy to replace a fried Nano have
By Jerry Gaffke · #51626 ·
Re: K5BCQ kits in BITX40 #bitx40
I update the list every 1-2 days. You can check the status of kits being ordered and shipped at the link below. Sometimes i make several trips to the Post Office if I happen to be going that way. 73
By Kees T · #51625 ·
Re: Spurs for Dummies? #ubitx-help
I'll keep my summary very short: do all the mods you like but make a high pass filter to cut the frequencies below 28mhz. Adding a tuner will also help. That's all folks.
By iz oos · #51624 ·
Re: IFshift
This may be dumb but could you use varactor ?diodes in the filter circuit and vary the voltage to them to change the capacity in the circuit to vary the band width. The Electraft K1 uses this type of
By Allen Merrell · #51623 ·
Re: RF power chain mods and improvements..
As a complete re-design of the RF low level chain I was thinking of trying BiDiAmps based on MMIC (BGA2851 seems a a good candidate as its price is low) and use BFU550AR for Q90 and 2N2222A for
By Ion Petroianu, VA3NOI · #51622 ·
Re: Noob Mic question #ubitx-help
How do you like the giant fan?? If I turn it on I half expect the radio to go sliding across my desk.? It's gotta go. Lol.
By davedt1e@... · #51621 ·
Re: RF power chain mods and improvements..
It would be nice would be to have a level 3-5 watts across all bands, 80-10. I was thinking of building an amplifier based on the old Motorola EB-63 application note. The amp would use real RF
By rcbuck@... · #51620 ·
Re: Noob Mic question #ubitx-help
Looks nice.? Great idea of re-purposing an old lamp. -- Lee - N9LO?"I Void Warranties"
By Lee · #51619 ·
Spurs for Dummies? #ubitx-help
I've been following the discussion on spurs, but not sure exactly what it all means in practical terms.? I'm still a tech so 10 meters is of some importance to me.? So far, it's my understanding
By davedt1e@... · #51618 ·
Re: Building homebrew ubitx: Need pre-v3 schematic PDF. Also, source for 45M15 (45 MHz IF) filter?
Thanks Vince for clarification on local shipping charges. Regards MVS Sarma
By MVS Sarma · #51617 ·
Re: Noob Mic question #ubitx-help
Here's that pic I promised.? Made from an old desk lamp from a resell it shop.? Not much to look at,...but it serves my purpose.? Used some vacuum tubing to attach the mic element and hot glued a
By davedt1e@... · #51616 ·