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Gren, One of the best online amplifier reference website is found at: https://www.w8ji.com <https://www.w8ji.com/> 73, Ray, W4BYG

I have *no* experience in this domain, so I am unable to offer advice. However, I have a Yaesu FT-101E and a Kenwood TS-520 in queue for functional restoration for sentimental reasons both of which

Watch out for failed dropping resistors for the metering circuit for the high voltage. IIRC they are 4.7meg. Replace them with metal oxide 3W in place of the 2W ones there. I would do that anyway even

Hoping to stimulate some discussion on Old Ham Tube Linear Amps: Are there any experienced with the various Tube Amp issues, ... such as Arcing and Band SW,? coil,? capacitor & tube and HV Xfrmr

Nice idea! -- With best regards Tam HANNA Enjoy electronics? Join 21k4 other followers by visiting the Crazy Electronics Lab at https://www.instagram.com/tam.hanna/

FYI I thought this would be of sufficient interest to justify crossposting a link. https://www.eevblog.com/forum/reviews/a-3rd-hand-that-actually-works!/msg5248170/#msg5248170 Let's just say I

Just a moment for a few memories of my old friend Nathan.. I .Often Visited Nat at Design Automation in 1980s He was a brilliant engineer, and teacher, with a wide range of interests, especially

I'm finally getting around to setting up an instrument I've had for a year or two and you suggest another instrument? Get real. For my use case there is no benefit.

You might consider looking for an HP 34970A. It’s basically a 34401A 6.5 digit multimeter with plug in cards. But unlike the 3457A, the different cards do different things. Digital I/O RF

Thanks for the tip. BTW are there any parts which are hard for you to get? I'd like to see if I can help.

Serendipity. I have just found this in my inbox: https://www.analog.com/en/products/ltm8080.html These are advertised as "Ultralow Noise, Ultrahigh PSRR" regulators, though they are SMPS. Check the

I've had a chance to work on this and am making a board with 3x LM317s to test along with 3x LM399s and 3x AD584JH modules. The 10th channel of the 44492A will monitor the output of the LT3045. For

I have 20x bare OXCOs of which 10x have been tested to determine the voltage required to set to near (dF < 0.1 Hz) 10 MHz. Based on that result I bought 10x more. The voltage varies quite a bit, but

My experience with cheap Chinese crystal ovens that have spent their useful live on a cell tower is: ? They have been removed from their home with hammer and sickle (my explanation of the scars)

A quality GPSDO is good to 1e-13. I'm seeing 1e-10 over several days in a very unstable temperature environment from a single OXCO with a lab supply and loads of EMI. I plan 4 OXCOs which will be

[email protected]> wrote: Reg > 0.001 ppb/year sounds unrealistic to me - by a *long* way. Looking at the specifications of a high-end frequency counter from Keysight, with an optional ultra high

As it happens I got an LT3045 module a few days ago, but had not yet opened the bag. I've been working on a leaky roof. And discovered I'm in *really* poor shape. 90 minutes and I'm beat. I just

Ignoring the progress in electronics of the last 40 years does not help. No, they have a band gap reference and it shows in the horrible noise plots. Band gap references live on amplifying the

I'm familiar with the LM317 and happened to find used ones. They have a 1.25 V zener reference which should be very stable due to aging. I'm hoping that I'll be able to pair tempcos to be zero under

Why did you overlook the lt3045 ldo modules? There are prebuilt modules having pins that plug in like an lm317. I use the modules with batteries on my phase noise test system. Sent: Tuesday,