开云体育

After assembling a QDX rig for a local ham I received a couple of the QDX PA mod PC boards made by WB2CBA which have the FDT86256 mosfets. They have a max voltage of 150V compared to the 60V of the

True, you are correct.? Sorry, I didn't mean to completely discount that.? I thought you had missed the statement before that, just under the photo, it states "Now check for DC continuity with a DVM

Looks much better now.? If you want to experiment with taking off another turn on L401a or L510, it won't hurt anything. And leaving it set to share 15/17 rather than 20/17 will also work fine - the

Hi Stan, On p25 in section 2.8 of the rev 3 assembly manual, it clearly states “Check that there is NO DC continuity from the points marked A, and ground.” ?This would be after T501 is

I am using a GPS QLG2 to supply 1 second pulses to a progrock, the progrock is generating 27Mhz for a AD4351 DDS and 24Mhz for a receive function. On both the signals generated there is a "blip" when

Thanks Stan, this is great. The explanation makes perfect sense to me. I ended up removing three (!) turns from the 15m portion of 401a. I think I could possibly benefit from removing one more. Or

Touched up all display board connections and now I get two lines on the right side of the display. Mostly symbols and 8s and 9s. I can use the rate push to select all 9s hoping to hear WWV but no

Yes, I have run FT8 and JS8-Call successfully as well with those settings. The rise and fall settings had something to do with correcting the double flash low audio error code. I do not know what if

A new chat has been created: I have been enjoying the 10-20m QMX for several weeks.? I used two 1N4001 diodes to drop the voltage to about 10.5V.? I had a beacon set on 10m.? Antenna SWR was

Stan, Ludwig, Dan, Jeff and all the others, whose names I cannot remember at this moment, for all your time and effort in volunteering to help others... And of course Hans, for designing and

I have another feature request. I'd like the ability to set a "Custom USB Name" like you added to the configuration menu in the QDX. Hopefully that isn't too difficult. I have 4 QMX variants that I

OK I guess it's a mystery then.

Thanks, Ron. I’ll definitely start there. Tnx & 73, Rich gmail.com@groups.io> wrote:

Yes, this would be very nice. Unfortunately, I don't know who would offer their spare time to provide good write-ups of how-to procedures for all of these. But the nice thing is, if there is a wiki

Ludwig and others have already documented troubleshooting approaches for the most common problems in this forum's wiki.? The fluctuating power/bias current is not a common problem with a known

I will do that once the radio is back in hand.

Ludwig you ask "Why not the current WIKI?" Mostly because there are often suggestions to do this, do that, check this and check that, without offering specific advise on exactly HOW to execute the

Factory built 12 volts, works perfectly. I've only made a few hundred CW QSOs. -27 firmware installed. With case $165 plus postage from Japan. JS6TMW

Please let us know what he finds.? This is a very tricky problem, with many possible causes. Stan KC7XE

This is a bit different than some others have reported, where their bias smps is maxed out. This suggests that the processor may be sensing a higher-than-needed current, and trying to reduce it. Maybe