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Date
Re: Transmit indicator light.
Roy WA0YMH Yes. It works fine with just a couple inches of twisted hookup wire between toroid and LED. Adjust the number of turns for slightly less than full brightness at full power. FT37-43
By Arv Evans · #52351 ·
Re: Help with AGC kit wiring
I have made some photos of how I did it. You need to keep rather to the left (near K1) as on the right there are some lines on the bottom of the PCB. Also i had to solder the socket on the AGC PCB
By Sascha Bohnet | DL5SMB · #52350 ·
Re: KD8CEC - Nextion Display - IAN questions
Hi, Gary. Can you share the link for the item you purchased? Thanks!
By Arvo W0VRA · #52349 ·
KD8CEC - Nextion Display - IAN questions
Ian (and the group)?In great anticipation of running the Nextion display on my uBitx, I purchased a 2.8¡±display on ebay and it arrived today.?I ordered the ¡°Enhanced¡± version and I found a
By Gary Shriver · #52348 ·
Re: Transmit indicator light.
Jerry Beauty of the little toroid and LED trick is its simplicity and ease of use. https://www.youtube.com/watch?v=NjHyXi1SrZs https://www.youtube.com/watch?v=ltZLxdEteBY Of course if we were to
By Arv Evans · #52347 ·
Re: No S-Meter nor callsign showing in KD8CEC #ubitx
Yes, the firmware I have in use is UBITX_CEC_V1.080_16P.hex - the standard display. I did activate the S-Meter in the Memory Manager (I am using uBITX_MM_V1.081 here). I have attached my
By Sascha Bohnet | DL5SMB · #52346 ·
Re: Transmit indicator light.
Arv, so you have used this method in a QRP transceiver? Did you run the wire to the LED as a simple twisted pair or a piece of mini coax? Roy WA0YMH
By Roy Appleton · #52345 ·
Re: BITX QSO Afternoon/Evening, Sunday, June 17, 3PM & 7PM Local Time, 7277 kHz in North America, 7177 kHz elsewhere.
QRM was pretty bad here in Orlando. I never did have any replies or hear anyone. So worked on getting digital working. Did hear a WSPR above my noise level on 30 so all wasn't dead
By William Cullison <wa8vih@...> · #52344 ·
Re: Transmit indicator light.
very good explanations Jerry. an another realisation http://f4gcw.over-blog.com/article-rosmetre-a-tores-ferrite-de-1-5-a-170-mhz-87487485.html Gilles F1BFU / FR 2018-06-18 21:22 GMT+02:00 Jerry
By F1BFU - Fr - 79 · #52343 ·
Re: Homebrew from scratch #ubitx
Very nice,I much prefer the modular designs for anything.I am thinking tho, when I take on an endeavor such as this, I would prefer to stack the boards in the box veetical? on their sides.Could still
By Richard Bennett <kd9bpy@...> · #52342 ·
Re: LA4425a Audio power IC
Looks like a good choice. Though?is now going obsolete (at least for ON Semi), which is true of just about every audio amp that's ever existed except for the LM386. Somehow, the LM386 just keeps
By Jerry Gaffke · #52341 ·
Re: Transmit indicator light.
Phase is important, if you are measuring current and voltage at the antenna port you will also want to measure the phase angle between the two. A Tandem Match more or less measures voltage and
By Jerry Gaffke · #52340 ·
Re: Nextion Display vs 1602 LCD - Current Consumption #ubitx
Most TFT color displays will run more current. Out 5" display runs as high as 0.7A. Jack, W8TEE
By Jack Purdum <jjpurdum@...> · #52339 ·
Re: Nextion Display vs 1602 LCD - Current Consumption #ubitx
I have a 3.28 Enhanced version on my ubitx. When I first installed it I noticed it ran warmer than with 4 line lcd display. I have a heatsink on the raduino regulator so it was warm but not
By Joe · #52338 ·
LA4425a Audio power IC
Curious if anyone has tried the LA4425a IC for replacement of the TDA2282. The LA4425a is used by Yaesu in some of their radios and needs only 3 external components, 2 of which are already in place in
By R. E. Klaus <reklaus@...> · #52337 ·
Re: Transmit indicator light.
I bet that someone could come up with a circuit of a diode, capacitor and resistor to feed into the same analog pin as the s-meter in the modified software so you could see about how much power was
By Ralph Mowery · #52336 ·
Re: Transmit indicator light.
Roy WA0YMH Probably could use a diode rectifier and filter cap at the toroid location and run DC to the front panel LED. I have never tried that because radiated RF inside the chassis has never been
By Arv Evans · #52335 ·
Re: VOM Advice?
Thanks for all the input. I didn't expect to get so many replies! Looks like there are lots of alternatives out there. Now to chase them down & decide which way to go. Thanks & 73...? ? ?Mark? ?
By Mark M <junquemaile@...> · #52334 ·
Re: Transmit indicator light.
The following is a question not a statement. Typically the ant lead is at the back of a radio case and the LED indicator would be on the front panel. Wouldn't running the wires feeding the LED that
By Roy Appleton · #52333 ·
Re: Damage to uBITX from nearby QRO transmitter (no power out on TX) ? #ubitx
Jerry, thanks for the heads up on msg #37380. Somehow I missed that discussion late last year.? I don't recall anyone postings about problems with Q90 on the uBITX and given the number of "blown"
By Michael VE3WMB · #52332 ·