SDR Oxide

The developer says:

[SDR Oxide is a] powerful SDR transceiver client with a GPU panadapter, dual VFOs, neural noise reduction, built-in skimmers, a full stack of digital modes, Winlink radio email, hands-free satellite operation and a live 3D space-weather globe — running native on Linux, macOS & Windows, or streamed to any browser.

SDR Oxide website

It’s still early in the product evolution, but I’ve heard good things, including that it works with my RTL-SDR Blog V4 SDR and that it runs well in emulation mode under Windows with an ARM64 processor. Note: this software also supports transmission, but I don’t have equipment or license for that.

RTL-SDR Blog V4 SDR dongle
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Product Review Supplement: LiJiANi RD-239S + W2

Check out the main review here: Product Review: LiJiANi RD-239S + W2. This post is some accumulated notes.

Antenna

The W2 repeater comes with a 4.2m antenna, terminated in a 3.5mm plug. The other end is terminated with an alligator clip that’s electrically connected to the antenna. This is interesting because the clip not only provides a mounting point end of the antenna, but also a convenient way to extend it.

If you want to make your own antenna with its own plug, check the diameter of the plug. There’s a rim around the W2 connector that might be too small to get the plug in. I’m using the supplied antenna and then clipping it on to whatever I’m adding.

Mast Antenna

This little experiment uses an aluminum sailboat mast as an antenna. I’ve used the mast antenna before in an experiment with another radio. In that video I had to keep the radio in a location in full sun within the length of my antenna lead, but with the W2, of course, the location of the radio is flexible. I can sit on a shaded bench and the W2 can be close to the mast.

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Product Review: LiJiANi RD-239S + W2

Introduction

I was excited about this one — my old friend LiJiANi Rd239, now with SSB. While that’s true, there is more going on. In addition to to SSB, there is app control, bandwidth settings and a new UHF band.

Check out First Impressions: LiJiANi RD-239S + W2 Repeater for the shipping box and contents. One might want to look at my review and comparisons of the original Rd239 later:

RD-239S (left) and Rd239 (right)
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First Impressions: LiJiANi RD-239S + W2 Repeater

PANIC

The USPS delivery site said they were returning it to sender, undeliverable because of insufficient address. They delivered it anyway. The address was mangled by jamming it together with no spaces between street number and name. Disaster averted.

Unboxing

My first impression was the radio, from seller CLOOBLUT, was in a real shipping box, and the internal product box wasn’t crushed at all.

RD-239S Box in good condition
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Product Review: JOC J-101W

I’ve hurried through this review because I really don’t think much of the product. I refer the reader back to my prior articles for some details:

It’s a cheap (under $23 with shipping) radio and music player. It’s not defective. Some observations and usage note follow.

Radio

It’s a plain MW/FM/SW radio and not a weather radio, despite the misleading “W” on the model number, “ALERT RADIO” printed on the front panel and WB specifications in the manual. Further, I have not been able to locate the purported “WB version” for sale. I’ve marked up the manual’s specifications table to emphasize this.

JOC J-101W Specifications (edited)
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First Impressions: JOC J-101W

This is an inexpensive radio / music player. They’re selling on AliExpress today for under $23 with free shipping. It’s an MW/FM/SW radio and music player. In this short First Impressions post I’ll discuss packaging, look and feel, preliminary sound quality assessment, first look at the manual, and some questions that come to mind.

Caution: My First Impressions posts are tentative and subject to change in the final review.

What it is

It’s an AM/FM/SW radio, adding an emergency siren, Bluetooth speaker, music player (supported music formats not specified) from USB-A flash drive or MicroSD card, and sleep timer alarm. The radio has auto tune storage (ATS). There is a speaker and an earphone jack. While the radio sports digital signal processing, the user experience is purely analog. There are some LEDs to indicate band and mode. The tuning display is reminiscent of a slot machine, except that the digits don’t rotate independently.

In tiny printing around the faux speaker port on the back, visible in just the right lighting, is a feature list: “R&D: DISPU — FRULL BAND — RADIO — BT — MUSIC PLAY — SUPER BASS.” Maybe “FRULL” means “not all of MW.”

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Incoming Radio: JOC J-101W

It’s a weakness. AliExpress sent me an email — 50% off, free shipping.

JOC J-101W Khaki

It cost $27.28 — that’s just $3 per band. Looks big! Actual size is 105 x 45 x 118mm (4.1 x 1.8 x 4.6 in). So it’s at least not tiny. It also comes in dark and light green color (reminds me of a HanRongDa HRD-700 back in the day). The “Service Manual“; however, is tiny. Supposedly the “9 bands” are MW, FM and SW-1-7. Usually a “W” suffix on the model number would indicate a weather band variant, but that’s not the case here.

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