¿ªÔÆÌåÓý

Date
Re: Interfere local Broadcasting radio station
OM Abhrajit Wonderful news that alignment addressed it. People here will debate agc forever, it works fine without it, but I added a simple LED and photoresistor agc circuit that helps when tuning
By Curt · #89409 ·
Re: Interfere local Broadcasting radio station
Something from long ago ¡­ the first time I installed my shack at this QTH in about 1990, I put up a sky wave loop for 80M. Surprise, the 50kW AM BCB station a couple of miles down the road ¡ª on
By Jim Strohm · #89408 ·
Re: Audio output is very low
Finally, my ubitx v6 RX issue solved, as per VU2ZAP guidance am check voltage in audio section like Q70, R50, R51, after check audio stage am confirm that audio stage is working fine, and TX stage
By Abhrajit das (vu3yda) <Vu3yda@...> · #89407 ·
Re: Interfere local Broadcasting radio station
Deep I am happy to inform you all local broadcast interfere problem is solved when I tune frequency properly and BFO also. I noticed after that am not facing this type of problem. I think it's
By Abhrajit das (vu3yda) <Vu3yda@...> · #89406 ·
Re: Interfere local Broadcasting radio station
Hi Mark, If I understand your situation, this is the second one that I have read about on this board.? That one also had a high RF situation so high that it took out Q90.? It seems these are
By Evan Hand · #89405 ·
Re: Interfere local Broadcasting radio station
John, Thank you for the explanation.? It does make sense when you look at that strong of a signal.? I suspect the AM signal is being rectified by the audio detector and modulating the
By Evan Hand · #89404 ·
Re: Interfere local Broadcasting radio station
Evan, I installed the filter originally after the AGC. I found I had strange distortions on the bands that I could not explain since the BCB filter I installed looked good on a sweep and had an
By John Cunliffe W7ZQ <n2nep@...> · #89403 ·
Re: Interfere local Broadcasting radio station
I am definitely not discounting the BCI nor the AGC, I will eventually do both.? I was merely sharing an experience I had.? I didn't have broadcast issues and then I did, in two different locations
By KB9WOO Mark · #89402 ·
Re: Interfere local Broadcasting radio station
John, Would you please help me understand why the AGC should be after the BCI?? At least for the kit-projects AGC and BCI it seems to me that it would not really matter.? The AGC takes its level
By Evan Hand · #89401 ·
Re: ESP32 for uBitx v6 #firmware #raduino #ubitxv6 #v6
Hola, I'm sorry is not possible. I do not make any profit from this job, I do it with pleasure but I cannot lose money. Saludos, Ram¨®n
By ramonlh@... · #89400 ·
Re: Tool boxes
We'll have to agree to disagree because everything I read says otherwise. Look at how factory equipment is made. On my radios, tuner, amp, swr meters, external filters etc. the antenna jack is
By Max · #89399 ·
Re: Tool boxes
** I disagree. Vehemently. Connectors should NOT be individually grounded to the case. The case should be grounded to the ground plane in one spot, and one spot only. If you ground the case in
By [email protected] <jerry@...> · #89398 ·
Re: Tool boxes
Sounds like rf maybe coming in through the mike cable. The bigger problem is the fact that none of the jacks (mic, keyer, antenna, etc.) are grounded to the case BEFORE entering the radio. AS is, I'm
By Max · #89397 ·
Re: Tool boxes
Went camping and had a dipole up above the UBITX V6. When I held the mike tightly, and keyed the transmit, the display started to flicker and sometimes it would lock up. If held with 2 fingers, it
By Earl Cox <kb5uew@...> · #89396 ·
Re: Tool boxes
Earl: Usually I'm by myself running 5W, so RF leakage isn't a problem. When I was trying to convince non-hams that they didn't need to spend a fortune on a rig, I used a clear case to make it easy to
By Jack, W8TEE <jjpurdum@...> · #89395 ·
Re: Tool boxes
I like the plexiglass (or Lexan) showing the insides although I am wondering about RF causing problems. Earl Cox? KB5UEW?Reply or E-mail me at:? kb5uew@...
By Earl Cox <kb5uew@...> · #89394 ·
Re: Interfere local Broadcasting radio station
Second the motion for AGC! I was operating Field Day on CW, and a local came on and nearly blew my ears off. Ouch! And to add insult to injury, he went away before I could QSO him :).
By [email protected] <jerry@...> · #89393 ·
Re: Tool boxes
Great minds... This is Diz's 5 Watter in an Apache case. Since none of the connectors penetrates the case shell, I'm pretty sure this could fall out of my backpack into a lake and be retrieve
By Jack, W8TEE <jjpurdum@...> · #89392 ·
Re: Interfere local Broadcasting radio station
Mark, A high pass filter before the optional AGC is recommended. I have? great success with the filter published in older ARRL handbooks since it permits 160m to fully function. I recommend
By John Cunliffe W7ZQ <n2nep@...> · #89391 ·
Re: Interfere local Broadcasting radio station
This may sound odd to some, but this is an experience I had. After correcting some common mode current problems, RF locking up the raduino, my next issue was exactly this: broadcast across all
By KB9WOO Mark · #89390 ·