开云体育

Thanks for all the testing Rowland. It sounds like just attaching the AGC board to the coax coming from the volume control is enough to bring in the RF. Even de-powered. What are you using to connect

On Tue, Jun 26, 2018 at 01:53 pm, <pa0jen@...> wrote: There was a typo in my last message. Corrected line 3: > > The only big difference is that the footprint of this mixer is actually a >

That would probably work, but I don't really need anything that elaborate. I think a fan with some ferrite beads on it will do. Jack, W8TEE

I scavenged a heat pipe system from a laptop.? It has a pad that was in contact with the CPU, and a set of fins that were ducted to the fan. Is that what you mean?

Hi Don -- here are the results of my test: 1)? Unplugged AGC board from main PCB.? Jumpered the header on the main PCB.? Left all wires connected to the AGC board that was now "hanging in space"

I did not know what it was called. Still, at $472 (smallest quantity I found), I'll probably stick to a small fan! Jack, W8TEE

Fluorinert FC-72 ----------------

From Howard's post I only see two do not enter signs. I see everyone else's photos but not Howards?

3M used to allow anyone who wanted to do so, to experiment in their labs. One guy invented a liquid that had unique properties, including letting animals "breathe" in it completely submerged. Also, it

Texas Instruments also has a programmable I2C I/O expander that lets you configure eight pins individually as inputs or outputs.? See TI part no. TCA9534A.? You already have an I2C port, so the

Hmmm...maybe power the RF PA section through the Peltier device with a heat sink on the outside of the case and another one with small fan on the inside of the case to stir the cool air. 8-) Arv

We grappled with the same tuning issue, especially since we were using an encoder push to change the tuning increment. Our experience is that once the rig is "set up", the most common actions are

Probably a higher power draw than I want. Jack, W8TEE

Hi Bill, I finally connected my computer sound card and started Spectran to serve as my CW filter. I works great. But! I had forgotten about the processing lag. When I tapped the key the dit didn't

How about the Peltier Cooling Device for an idea. Exhaust the hot air through a check flap/valve idea 73 Larry WA9DOH jjpurdum@...> wrote:

Ls? My solutio? for the fragil tuning knob: Put a push switch parallel to the switch of te decoder (Enter) and velten beneath the tuning knob.? Than t doesnot change the frequency if touched. Much

Nothing is a vague description.? Do you mean the display does not light up at all or it lights up blank or it lights up and displays something but not what you expected or something else?? The more

after building trx in case .Display Shows nothing. No vfo Output no rx/tx can anyone help. ??

One consideration for that kind of design is the managing moisture on the inside of the enclosure.? The PA transistors could end up being the coolest part of the the inside of the case which would

All nice builds!? ?Enclosure choices at:?? www.contextengineering.com ( http://www.contextengineerng.com )