This thread caused me to adjust output on my RS-35M. Thanks all. RAS

The Astron power supplies I own have an internal pot to set the voltage. I would adjust it with nothing connected. The can likely go over 16 volts. I have 3 RS-35Ms, but have never used a 50. For

Right.  HP/Agilent/Keysight measurement instruments mostly use switching power supplies these days.  That includes spectrum analyzers designed to measure low-level signals from audio to microwave. 

Thanks for comprehensive reply! 73, Ed McCann AG6CX

Yes, the small footprint, the lower physical weight, the lack of transformer humm, the excellent regulation, the low noise. I have 3 of these supplies. In each case I do not find

From 2015: Ed,All Elecraft 100-W amplifiers are designed for optimal performance at about 14 V (as measured at the DC jack on key-down). This includes the K3's and K2's internal 100-W amps as well

Bob: Re: could you be a bit more specific on what features make it “superior”? And could you comment on the notion that the linear Astron version might be quieter in spurious emissions claims

My Astron 30 amp linear supply on the bench will adjust to about 16 volts and maintain good regulation, no load to 20 amps. On the other hand, I no longer use a linear supply with my

What is the upper limit of say an Astron Linear 35 or 50 amp supply?

I think Wayne said as high as 15.5 volts, which approaches the upper end of spec. In spec is within spec, which would be 15.87 volts. The low side spec would be below 12 volts, which would not be

Bob - I am not posting this to the list, as I don't think it will add anything of value... but I was surprised to see K9VUJ talk about up to 35 watts drive power to his KPA500. Your numbers are FAR

I find that my KPA500 {s/n 3519} drives to 500 watts output on all bands with 19 to 23 watts. I find that driving power of over 25 watts will push my KPA500 to over 500 watts. All

Also if you have the KPA500 you only need around 30 watts to drive it and that is in the good area for IMD from 12 volt amps. That’s were I run mine, maybe a little more 35 watts driving the KPA.

This has been stated and confirmed several times. A suggestion: If you have a power supply with good regulation, no load to rated load, and you use power leads with very low

I remember a comment from Elecraft saying that the K3 will transmit a cleaner signal with voltage around 13.8 to 14 volts. I don't remember the exact comment.

https://www.schulmanauction.com Grant NQ5T

What is the address of the Schulman site? 72/73, EM73vx Robin G-QRP #12386 SKCC #7294 W4IEN w4ien@...

Paolo, there is a nice K3 selling on the Schulman auction site. You just have to be the top bidder. Larry W0OGH Sent from my Verizon, Samsung Galaxy smartphone

Yes it makes a difference as to the voltage, and voltage drop in some long cables, plus the fuses and holders, can exacerbate the issue. I set my Astrons at 14.3 volts to compensate for a typical

I agree, the K3IOB solves many issues and makes digital operation easy to configure and use and highly reliable day in and day out. Fewer cables, fewer connectors, fewer adjustments to get