About JRE Test The people who design and build the enclosure you reach into.
JRE Test builds benchtop RF shielded test enclosures — the operator-accessible, hands-in design — with filtered I/O, built in-house, every price published.
Provenance timeline
Record active-
Ramsey Electronics era Sub-$1,000 home satellite-TV receiver
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Origin record Operator-accessible enclosure · originated
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JRE Test Serial-record continuity
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Current work Sleeve ~2031 · window ~2035 · filters ~2037
What we do
Shielding you can work inside.
We design and build benchtop RF shielded test enclosures that give you roughly −100 dB of isolation while you reach in and keep working. On the high-speed interfaces (USB 3, USB-C, 10G Ethernet, HDMI) the filtering is mode-selective: differential data passes through unfiltered while common-mode RF is low-pass filtered out. USB 2.0, 1G Ethernet and power use conventional low-pass filtering. Either way your signals get in and out clean without breaking the shield.
Every enclosure is built in-house, and every SKU in the catalog carries a published price you can read on one page. There is no cart and no checkout — you spec what you need and send an inquiry, and we quote it. If the configuration is unusual, that is a conversation, not a form.
The founder
The engineer behind JRE Test.
I'm John Ramsey, and I've spent more than forty years in RF engineering. I originated the operator-accessible RF shielded test enclosure — the hands-in design you can reach into while the shielding holds — and I've kept refining it ever since: the sleeve for bare-hand tactile feel — no glove between you and the device — the window so you can see what you're doing, the filtered interfaces so your data gets in and out clean. The I/O-plate system you'll see across this catalog is something I developed decades ago, and it's still one of the most practical features of our enclosures.
Long before the test enclosures, in June 1980, I helped break open the home satellite-TV market with the first sub-$1,000 receiver — about half the going rate at the time — which got me recognized as one of the industry's "Pioneer's Pioneers." Different chapter, same habit: figure out the hard part, then make it something a working person can actually afford and use.
When you order from JRE, you're dealing with the person who designed the thing. Email me about your configuration — engineering@jretest.com. Getting the filtered I/O right is exactly where I spend most of my time, and I'd rather see your specs in writing than guess.
— John Ramsey, Founder & Principal Engineer, JRE Test
Tell us what connections your device needs.
Tell us what connections you need to your device under test — USB, Ethernet, RS-232, RF connectors, etc. We'll spec it out with you.