Level Up Your Audio: Build a Dynamic Speech Compressor + Mic Preamplifier! 🎧
Want studio-quality voice on your transceiver? This simple yet powerful project combines a speech compressor and audio preamp to make your signal clear, punchy, and consistent — even during noisy QSOs! ⚡
🔧 Learn how it works and build your own here:
👉 https://vu3dxr.in/dynamic-speech-compressor-with-audio-preamplifier/
#HamRadio #Homebrew #AudioCompressor #AmateurRadio #uBITX #DIYElectronics #VU3DXR #QRP
Boost Your Voice with the SSM2167 Mic Preamp! 🎧
Looking to improve your uBITX HF transceiver’s audio quality? Check out this new post on how the SSM2167 microphone preamplifier adds compression, noise gating, and gain control — all in one tiny chip! 🔊
Perfect for operators who want clearer, punchier, and more consistent transmit audio without distortion.
👉 Read the full guide here: https://vu3dxr.in/ssm2167-microphone-preamplifier-with-compression-for-ubitx-hf-transceiver/
#HamRadio #uBITX #SSM2167 #AudioPreamp #HomebrewRadio #AmateurRadio #DXing
Boost Your Voice with the SSM2167 Mic Preamp! 🎧
Looking to improve your uBITX HF transceiver’s audio quality? Check out this new post on how the SSM2167 microphone preamplifier adds compression, noise gating, and gain control — all in one tiny chip! 🔊
Perfect for operators who want clearer, punchier, and more consistent transmit audio without distortion.
👉 Read the full guide here: https://vu3dxr.in/ssm2167-microphone-preamplifier-with-compression-for-ubitx-hf-transceiver/
#HamRadio #uBITX #SSM2167 #AudioPreamp #HomebrewRadio #AmateurRadio #DXing
Fellow hams, I'm suddenly getting the itch to understand RF circuit design. Basically, I want to be able to look at the sbitx or ubitx RF board diagrams and understand what I'm looking at. Currently, I can't even be sure I'm orienting the page correctly. Is there a good resource that will take me from zero to at least that level of comprehension? Thanks!
#hamradio #sbitx #ubitx #Amateurradio
Those of you with an #sbitx do you like it? Unlike the #ubitx does it have an S-meter built in? Is there anything I should know before buying one? I may replace my g90 with it. #hamradio #raspberrypi
I have a #digital related question for people of the #hamradio community.
Does anyone know of a #transceiver that does good 5W on digital modes like #FT8 #PSK #JS8 #RTTY etc. I just want to only run digital modes with it. I been looking at #uBITX V6 and #QDX etc but interested peoples input. One the reasons I looking into this is cause my station runs off of solar and battery and my current radios draw 5-6A at 5W on FT4/8 etc
A Tale of Two Voltage Regulators.
On the left is a LM7805 voltage regulator. All the capacitors and heatsink were needed for filtering, dampening, and cooling to make the #ubitx 5" Nextion display happy. All that heatsink is needed because the LM7805, a linear VR, is pretty inefficient.
The far simpler board on the right uses a module that is a drop-in replacement for the LM7805. It is a switch-mode VR and though rated the same as the LM7805 needs no heatsink.
Finally, a proper heatsink for the µBITX! I figured out a way to mount it independent of the back panel which will make it easier to work on.
But what an effort it was to get it all together. Getting the aluminum spacer drilled and tapped was the cause of much anguish, and till done it consumed 2 drill bits and two taps that are still embedded in the block. I also needed to unsolder and reposition one of the transistor for it to fit.
@DD5CF_G1ZOS
Hey from another old fart, I'm behind you by only few years.
I enjoy building also, most recently been putting together and modding a #ubitx.
How about you, what are you working on? If you got them, post some pics.
Well look at this, the Nextion display all lit up and everything! Put a big honkin' cap across the regulator's output hoping to smooth out the spikes and it did the trick.
Thought I'd try one more time while waiting for some Fairchild regulators to come in the mail. I'll be curious to try them out and see what difference they make.
Why's this simple 5V regulator circuit giving me so much problems?
It's supposed to power the 5" Nextion display and was working before I changed out the LM7805 because I had mounted it to close to the board for the heatsink to fit. A 3.5" display powers up fine, but the 5" stays dark and I can see spikes at about 1/sec on an o-scope.
Could it just be that the LM7805s are no-name ones I got off of Ebay?
Hey! Starting using Mastodon yesterday. Just learned about it and the term fediverse when I upgraded to #nextcloud 15.
I like the hands-on aspect of ham radio and have made most of my antennas. Currently my focus has been on building and modding a #ubitx. Mostly I work the digital modes, partially because I have a terrible case of mic-fright I've yet to overcome. 😞
Two other interests are collecting spinning tops and making cocktails. They do go together, don't they?
Two very different radios! A fully loaded KX3 and my current project, a µBITX with a 5" Nextion display and modifications that grow day by day.
Soldering the DC connector for the #uBitx.
