Recent content by troyota

Thanks kopcicle, I will attempt to build one of those. I have not had a chance to get back to this d201a. I have had other things come up. I am still having a little am rx issues. I did get the replacement pot for the rf gain. I need to get that in there to see if it helps my am rx. Thanks to...

Ok, thanks. I don't have a signal gen. I do have a spare board from a 201a with those on it. I may switch them out to see if it helps. Is there a source somewhere to purchase these?

Alright, I tried my spare crystal and the crystal from my good working d201a and they are both the same way. So I guess it's not the crystal. Is there a way to check the small black filters? It seems like a while back i had a rx issue and tapping on one of them brought it back. I'm going by...

Ok, I checked tx freq and rx freq. They are dead on. I went back to my 990 tuned to 5.8015 and used my coax jumper sniffer probe speciality tool....lol. anyway, I get a tone. when I roll up on freq my signal increases in volume and on the meter of the 990. The highest reading is at 5.80349. Does...

Alright, thank you. I think I done that after I completed your vfo tx mod. I will check that when I get home Friday to be sure. I know AM and SSB uses different paths. SSB works great with the RX and TX on frequency with each other and the clarifier is very close to center. I have made contacts...

Thanks Nomad, I have a yaesu 990 tuned to 5.8015 LSB that I used as a sniffer. It does change when I touch the crystal with the probe. If I roll the vfo back and forth on the 990, I can hear a difference. It seemed to zero beat above 5.8015. ( i think) I was leaving for work out of town, so I...

Wait! My 4mhz reading was not 4.2 for the 4.4 crystal. The reading was 4.3998. I read my notes wrong. I just ran through the 4mhz again. Ch 1 = 4.3998, Ch 2 = 4.4099, Ch 3 = 4.4199, Ch 4 = 4.4399, Ch 5 = 4.4299. This was as close as they will adjust. I don't think that is my issue, but I am not...

I am getting very close on this ole gal. I am noticing on AM may receive is about 3kc lower than it should be. Example, the frequency is 27.305, but to clear it up I have to move the vfo to 27.302, then in crystal mode the clarifier will not get there (about 27.304 or so. It is like this on all...

I finally got a very minimal carrier. I tried to neutralize, tune and load with no luck. Then I noticed my frequency counter was reading output, unfortunately it was transmitting at 25-26mhz. I started checking things and then verified the fact that I am indeed a dumass. What I thought was R711...

I have another D201a that had low SSB modulation. I started with setting the bias. I set the AM and LSB bias for -40. LSB R707 trimmer was on the stop to get there. (I found the am set at -8) Then to neutralizing the tube, final tuning etc. This is where it gets a little funky. Down to line 15...

Thanks Wavrider and Nomad, I checked the resistors and did find R711 out of spec. 1/2 watt 330ohm had changed to 6 ohm. I replaced it but didn't get any change yet. I do have the complete service manual and schematic. I would have never gotten this far without it. I admit, I struggle with the...

Well here we go again. After the SSB receive is finally working for a day or 2. Now I have lost the AM carrier. However, it will still modulate 20 watts. I have 0 power/modulation on LSB or USB. Before this happened AM transmit worked good. I had a 5 watt carrier on am and 20 watts modulation. I...

Thanks Nomad, I was going to try to use some pictures and notes from other rebuilds I have seen online if I couldn't find a schematic. I seen that thread last week when I first pulled the covers. I thought then...NOPE! Put the covers back on and sell it as is where is.. So the covers went back...

I received a Varmint XL1000 from a SK about 3 years ago. It has been sitting ever since. I pulled the covers off last week and the power supply board is mostly unhooked. I have no idea where these wires go. I have searched (with no luck) for a schematic for this. If anyone has one they are...

Nomad, I usually keep some sockets on hand. I tinker with about anything that has tubes. Good to know for the future, I am just about 2 hours south of you around the Lake Cumberland area. Oh, I do need a crystal for a D201A synth board I have. It is the one that controls channel 36-40 AM/LSB...