¿ªÔÆÌåÓý

Date
Could I use 9v batteries with by bitx40?
Also, my power supply is only 1.25. Is that enough, or should I get a bigger one.
By klostreich3@... · #62654 ·
Re: [BITX20...build idea
Hi, My volume control knob is a discarded cap from a medical syringe that had contained saline solution. The threaded hole that once sealed the syringe is the same diameter as the shaft on the volume
By Bill Cromwell · #62653 ·
Re: designer mods
Since I have been monitoring all of the Bitx threads (only for the last 3 months), I have come to understand that the uBitx is a kit that really needs to be worked on to make fully "legal" in the USA.
By Evan Hand · #62652 ·
[BITX20...build idea
I saw somewhere a comment about the knobs. The encoder knob is not a problem since it has a pretty much standard size shaft diameter. However, the volume control shaft is smaller. I've seen knobs on
By Bob Lunsford · #62651 ·
Re: designer mods
The BITX radios are open source designs intended for hacking and learning.? They're not intended to be and likely never will be appliances.? The info's here on the forum - grab a soldering iron and
By AndyH · #62650 ·
Re: designer mods
Yes. The community is also working it. In my dreams someone will offer a kit of parts, that has been verified on maybe a couple dozen rigs. Meanwhile,? available data may give you clues on what bands
By Curt · #62649 ·
Re: designer mods
The fact that it is V4 would suggest that improvements do occur. There many great and wonderful minds on here working to improve the uBITX. For that I am thankful. Merry Christmas and a Happy New Year
By G1WDF <wobblyandflo@...> · #62648 ·
Re: calibration and tuning tweak help... #calibration #ubitx-help
Mark, thank you!!!!! This is weirdly white knuckle if you are a newbie...but i will wear down the problem.? Thank you the assistance... Don km4udx
By Don - KM4UDX · #62647 ·
Re: DSP cheap for qrp
Nice work Jack, I saw the pictures. The teensy audio library is very flexible. I am experimenting on the m4 cortex at a very low level but using the CMSIS framework, it seems good, it is not as high
By giuseppe callipo · #62646 ·
Re: DSP cheap for qrp
Hi Farhan, thanks for reply, obviously it is an honor for me to have your attention, thank you. ofcourse it is possible to port it to other platforms,?some months ago I worked on small audio
By giuseppe callipo · #62645 ·
Re: VA3NOI/ND6T AGC board received. Box folder found, now.... for installation?
Installation info on web. It shows exactly where to cut the trace to install the version with 2 mosfets. The detector attaches to the high side of the volume control. The mosfets patch into the RF
By Curt · #62644 ·
Re: DAVE [BITX20] RF Preamp - Attenuator
Thanks Mike...? Found 1621s on ebay for <$6 and total of $5 for shipping.? Ordered 3.? Might take a long time for delivery.? I didn't spring for the $30-$35 shipping for three 8-pin dips! Woody
By Woody <mailme@...> · #62643 ·
Re: No audio from last week may have a solution
Just a quick question, is it just for smoothing? Could I get by with just bridging the connection? Sent from my Huawei Mobile
By Sean Pearce · #62642 ·
Re: DAVE [BITX20] RF Preamp - Attenuator
i suppose ebay is offering 10pcs smd version at less than $3 and free shipping.
By MVS Sarma · #62641 ·
Re: DAVE [BITX20] RF Preamp - Attenuator
Ebay offers shipping of $2 or $3 from China. Mike K5ESS
By K5ESS · #62640 ·
Re: DAVE [BITX20] RF Preamp - Attenuator
Have used 8307s in several projects. It is a log amp with rather high freq capability which can be tamed, but it does not offer the attack / decay features of the SL621.?? Still, a possibiliity.
By Woody <mailme@...> · #62639 ·
Re: DSP cheap for qrp
Farhan: Check out the video at: http://hamradiodesigns.com/index.php/photos/ Some of this is already being done. Jack, W8TEE
By Jack Purdum <jjpurdum@...> · #62638 ·
Re: DSP cheap for qrp
great news. perhaps if you stick to straighr c code, we could pull this into other platforms like rpu and teensy?
By Ashhar Farhan · #62637 ·
designer mods
Does anyone know if the designer of the ubitx ver 4 is attempting to solve any of the problems associated with his radio?
By mitchellmichaelh@... · #62636 ·
Re: DAVE [BITX20] RF Preamp - Attenuator
Began to order and discovered that they want $35 shipping from Hong Kong.? Trying to decide if I want one that bad.?? ...But thanks. Woody
By Woody <mailme@...> · #62635 ·