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The RF Workbench / Power Supply for TX
« on: December 24, 2017, 1303 UTC »
I'm looking to replace a cheap Chinese PSU I've been using to power my Lulu TX. It was good enough I guess to get things started but I recently got a scope and it looks like I get a lot of ripple/noise from my Chinese PSU. Carrier looks terrible on scope and it may be that I don't have my scope settings correct. I'm still learning how to use the scope but I strongly suspect it's the PSU. My audio sounds good on recordings that listeners send with reports, so I don't think the PSU is affecting the audio too badly anyway, but I think I should use a better PSU. I can save the image on the scope, I still have to figure out how to do that, if anyone wants to have a look at what my carrier looks like on the scope with the cheap PSU I can send that to you.
I looked around online for a new PSU but I would like to hear about what other people are using before I spent more money. The Lulu I got from Stretchyman will run from 12-24 volts. I usually stay at 18v (12 watt carrier) so a power supply that is adjustable between 12-24 volts is what I'm looking for. PSUs I see online for Ham radio only go up to 16v. I really don't want to use battery power.
Thanks for any help!
I looked around online for a new PSU but I would like to hear about what other people are using before I spent more money. The Lulu I got from Stretchyman will run from 12-24 volts. I usually stay at 18v (12 watt carrier) so a power supply that is adjustable between 12-24 volts is what I'm looking for. PSUs I see online for Ham radio only go up to 16v. I really don't want to use battery power.
Thanks for any help!