... Not a problem, I think. Just means that the base-emitter current is double the design or typical value or that the AGC voltage is half what it should be. I...
Hi Jim, there is battery-backed RAM to preserve memory settings between charging cycles. It's a Lithium cell mounted on the logic board behind the front panel....
It must run the clock also. Will the radio still function if the battery goes kaput? I hope at worst, it will just forget saved stations (which I don't use...
Unless the battery short circuits, the radio should still run and it will maintain time and memory as long as it is plugged into an active AC outlet or an...
... emitter 0.5v(spec2.0) ie base/emitter diff 0.7v compares with schematic of 0.6v but values are offset? ... to ground.... =100k and between D33/C159 to...
There is a small battery on the key pad side of the front circuit board, quite hard to get at, but managable. It will keep the rig going (clock and memories)...
I figured it did. It took me by surprise that the clock was still going 24 hours after I unplugged it. None of my other rigs will keep time for more than a...
... That's normal - max gain, no signal to activate the AGC and pull it down. ... D29/R173 ... That's good. ... No, there is a lot of DC paths to ground from...
... adage: "The harder it is, the more you stand to learn" Thanks for the primer on the front end - I have digested most of that. If you are happy to persevere...
I have been the proud owner of a DX-394 with the main mods plus a Kiwa filter for a couple of years now. I am deeply impressed with its performance on SW where...
Hi John, I too have experienced this problem, so you are not alone on this one. I do not know of any fix for this but to try and use an antenna tuned to the...
Hi Jorgen, Any radio can be bettered, sooner or later, one way or another - by mods or by replacement! I wouldn't have thought that sensitivity would be an...
... From: "errolcroll" <errolcroll@...> ... Either will do but we need output at 455kHz and at some other frequency within radio's tuning range. If an...
Dear Tom: Many thanks for your help, is very dificuld receiver DRM, I receiver cbc and rnw, but only text, my friend receiver DRM with audio near my house with...
Yes, Rafael, receiving DRM is more difficult than AM. If you can get a decent signal strength from MOI Kuwait at 11675kHz 2200-0200UTC, you might have better...
... frequency within radio's tuning range. If an oscillator, it would preferably be modulated (signal generator with 30%AM modulation) ... fact that your...
It seems I've fried the RF stage in my -394. I'd added to the antenna and forgot to unhook it when I transmitted on my nearby HF rig. Anyone have a good source...
... antenna ... Ouch! Radio Shack Canada still lists them for CAN$7.18. Ouch again! Don't know about RS USA. RSC only delivers within country. I rarely...
I have a Radio Shack DX-394 (B model) for sale at .. http://216.120.226.127/attics/latino.htm Radio comes with original box, packing, instruction manual,...
Many thanks Tom for yours answers I very interested about the drm If its posibility send me the drawing (circuit)for your last cicuit of drm (not incluyed the...
BlankWe sometimes see that members unsubscribe because they are overwhelmed with the number of e-mail messages about DX-394 topics they are not interested in....
... to ... Yes, it could work. Main thing is that it be stable in frequency so it does not drift away from you while measuring and that its output amplitude is...
... nice and clear and appears stable in freq and amplitude. Adjustable 0- 8V. ... still struggling to get this straight. What would provide the modulation to...
I made some progress! 85% audio decoded from CBC Sackville 9180kHz over a 4-hr period today. This after many hours trying to make a crystal controlled...
Hi Errol, I could have said a X10 low-capacitance probe and meant the same thing. It's a resistor (maybe 1M) with a parallel trimmer capacitor to flatten out...
... 555 ... If you pass the carrier through an amplifier whose gain is modulated by the waveform of another signal, the output carrier power will vary with...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
