Paul,
The U2 is getting well! With the software I have (a few days ago), I was able to get my 5 character call in just fine. I think Reset helped a lot. And editing wasn't done right yesterday. Plus I had the LP filter unplugged while testing. I'm using a 3A commercial variable bench supply. I'm finding it's better to disconnect the + to shut down, rather than turn off the main switch. Same turning on the U2. I think turn on transients from supply might give chips some fright!
OK here are some readings and two questions:
RF out of LPF with 47 ohm load resistor
U2 current, not TX-ing = 130 ma
U2 current, TX-ing = 260 ma
P-P RF voltage on scope when transmitting = 12.5 volts
Question 1: Should I see my call on display when TX-ing?
Question 2: What do the numbers mean in middle of the display?
I see a pair of numbers advancing. One space over, I see
0 to 3 in no particular order.
Thanks...Don
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--- In QRPLabs@..., "Paul KE7HR" <ke7hr@...> wrote:
Don,
The original problem was in the callsign - WSPR requires a 6 character call. Yours and mine are only 5, so you have to add a space at the end in the callsign field. Then the error "Message" will not appear and the output will work.
On the start and frame setting:
I put charts in the files section of the Yahoo group page which shows for which start minute and what frame setting, which minutes will be transmitted. If you are operating on 20 or 30 meters, there are LOTS of stations and I would recommend no more than a 20% to 30% transmission time in an hour. On the lower bands like 80 and 160, then you can use somewhat higher percentage of transmit and will likely interfere less with others.
Personally, I always use start at 00 and then vary the frame to suit the band I am on. On 80 meters, where I have done the most work, I normally use a frame of 6 or 8.
Paul KE7HR
--- In QRPLabs@..., "Don" <don1mh@> wrote:
Yes Gary, I did catch that early on, but not the trouble. Finally, the no output went away with Reset, and re-doing the options. I think I didn't understand the editing of configuration. It looked like the options got saved, but maybe not. I now hear and see lots of output on the Kenwood. Total current when transmitting is about 140 ma. On another post, I asked about common setting for Frame and Start. Maybe you can chime in?
Don...W6RWN
--- In QRPLabs@..., Gary White <white512@> wrote:
Did you apply Vcc to the final? The U2 requires a jumper so that the
final will get volyage.
73
Gary
