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Hi Guys,
My buddy had a Weller 200/230 watt soldering gun, it worked perfect! I clamped a pair of vice grips up against the plastic on the wire/ear and then used the soldering gun to heat up the wire and melted the solder on it and it flowed perfect.
Now to get it mounted under the eaves.
I...
I'm sure the Radio Shack one does, but for the same money I could hook the actual meter I was buying up to a known good one to verify it was reading accurately for SWR which I couldn't do at my local Radio Shack, and as for power the Radio Shack isn't a powered either so I'm sure it's readings...
Treked over to the radio shop my buddy recommended today.
They had Astatic, Dosy and Workman meters for sale, and a couple Birds back in the shop. They let me pick one of each and hook it up to compare to their Bird...the winner was the Workman. The Astatic and the Dosy showed the SWRs a bit...
I don't have my notes handy, but I took the diameter of the stub they left sticking out plus two times the diameter of 12 awg wire (because you are wrapping it around the stub) and added them together, I think it was just shy of 3/8" if I recall correctly, and the #4 hose clamp goes from 1/4" up...
Here's a drawing from the instructions, the wire stubs they left sticking out to solder to are about 3/16" in diameter (5awg?) and 1-1/2" long.
I actually thought about some split bolts instead of soldering. (this is going under the eaves of the house, so it won't be free hanging in the air...
Hi Guys,
I've been out of electronics/radios for a long time and am just now getting back into it, so I don't have all the tools I used to.
I'm going to set up a 1/2 wave dipole using some 12 or 14 awg copper wire and the Budwig center insulator.
The directions say to solder the wire to the...
Thanks guys!
I'm keeping an eye on fleaBay, but I'm leaning towards the Workman. I like the wattage selections and it being backlit (I even prefer it over the next model up Workman that has auto calibrating swr simply because of the better power ranges). The reviews are generally good and a...
Hi Guys,
Any recommendations on a decent, reasonably priced power/swr meter?
It looks like the Workman hp201s, is a pretty good value...am I overlooking any others?
Thanks!
Steve
The P5 P6 mod doesn't work on this radio as is because they moved the pull down resistors to the channel selector, so that's why somone came up with the different mod. It does work but one problem is there's no way to turn it off and have your normal 40 channels. Looking at the circuit though...
Hi Guys,
My radio arrived! 8-)
Unfortunately it didn't come with the power cord (insert Homer Simpson DOH! here!). I'll see if I can run one down in the next day or two.
I lifted the lid on the radio though and have a couple observations.
*) It has the RCI8917-99 chip, so should be no...
We'll see how it goes, the Galaxy's are too badly reviewed and the 979 seems to score higher than the 959s.
Old equipment comes with it's own set of problems, aging caps, hard to find parts, etc..
If I get bit good I'll probably just opt for a ham rig.
Hi Unit399,
That makes more sense, but the author of that mod specifically stated they were pull up resistors, so that's what threw me.
With the 979 mod though, they are cutting the trace from the channel selector, so the state of the line beyond that cut to the chip pin should always be at...
OK, doing a little more research...
*) The MB8719 had internal 1K pull down resistors.
*) The RCI8719 does not have internal pull down resistors, but schematics for radios using that chip show 1K external resistors in the circuit.
*) The 979 schematic shows the pull down resistors but they...
Found a thread where a guy replaced an RCI1879 with an MB1879 (he just had the older chip on hand) and had problems. After troubleshooting, including directly addressing the chip, it was found the problem was the coupling of the internal pull downs with the external ones....that were in the...
I haven't found a data sheet for the RCI8719, but I found several references on the net when doing a "RCI8719 pull down" search. From what I gather the MB8719 indeed had 1K internal pull down resistors, but the RCI1879 does not, so it needs external pull downs. I found a couple threads where...
I can't find much on the internals either, but I'd think if pull up/downs were in the chip then we wouldn't need to add any. But if they're not in the chip then they should be in the circuit somewhere and since they are not installed where indicated on the schematic then the only other logical...
I wonder how they keep the pins from floating? I wonder if pull ups or pull downs are installed at the other end of the wiring harness coming from the channel selector?
Ah Ha! So practice varies from application! Can't wait to get my radio!
Sooo, is the board drilled for them and they're not installed? If so, we could just install a pull down resistor?
Interesting, the schematic shows R322 going to pin 10, but the top and bottom side illustrations clearly show R327 going to it. Oh well, no doubt to me that they're pull DOWN resistors.
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