My money (maybe $45?) goes for a(n) ZBT WG3625 gigabit WiFi with 4G/LTE modem option. Mine was upgraded with the Quicktel EM12-G CAT12 modem I bought for $130 back two months ago, likely available for more like $90 now? You could go with a Sierra Wireless 'AirPrime' EM7565 instead if you have money to throw at things, still CAT12 but likely more reliable long-term. (?) - always subject to opinion and life experience.
Frankly these days you're likely to swap it out for "what's next" in under two years, anyway, so I would go with the EC25-AF now for $88 + shipping right now, and buy either of those two CAT12 - Quectel EM12-G for $155 or Sierra Wireless EM7565 "AirPrime" for $205. You're likel
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Wow, how easy is it to blast half your message - or all? I can't remember what I said precisely, but it's likely TL;DR anyway:
The point was that there's middle ground from either manufacturer for around $150-ish and those options include Quicktel EM06-A & Sierra's Aircard around $160 (and one more I don't recall without having to consult with the screenshot from my Chromebook). The adapter if you decide on an M.2-based modem is between $1 and $20 depending on where you source it from. Amazon - highest side, direct from CN depends on SQ and patience, but obviously quite cheaper. I was checking things off the list, Gigabit, dual band wifi, one uplink, 4 downs all GBit, metal case with 12V / 2A (=24W) wall wart, 1x USB 3.0, MTK7621A dual core CPU/chipset, full QoS support, 802.11a/b/g/n/ac
If you can think of what I forgot, just ask!
Pandemic reminder included at no extra charge...
Those things (modems) are nowhere near as big as you might think from the pictures used: the mPCIe form factor is _very_ slightly larger than the M.2 which is 30x42mm - you can hide one under a pair of domestic / US commemorative postage stamps without tearing them apart - swear to hey-zeus
. My quick unchecked computation gives you about 1.16" x 1.66"?? Maybe - close enough. The metal box itself is also smaller than you might think, around 10" wide by 7" deep by 1" thick.
Exact metric is 235x165x20mm = 9.25"W x 6.5"D x 0.78"H but the rubber feet make it basically 1" height (or "tall") and 9 1/4" wide by 6 1/2" deep. Obviously that's exclusive of the antennas, so if you are measuring to precisely fit, make it 12" x 8" to give it some air breathing / cooling room. The PCBA inside is roughly 4"x6". As already noted, the modem is roughly the size of two US commemorative stamps side-by-side (really, despite the overblown pictures used by both makers, AirPrime (Sierra Wireless, made in Vietnam) and Quectel - PRC).
Current source - from Shenzen China giving about an 10 to 14 day lead time, your mileage WILL vary, obviously! See attached captured yesterday:
Obviously if you prefer the "
aliexpress.com" route, you can up-chuck $30-$50 and go with identical twin sister from Huasifei Global and feel better (fuzzily).
Here's detailed view of model numbers vice US$ pricing: (plus your tailored shipping / delivery adjusted to your precise location)
The model numbers (shown above) likely indicate they have custom logo and/or graphics, but essentially are exactly what you get with the Zhibotong ("ZBT") OEM original design and I don't know it the SATA is there yet - it's an optional component, and IHNI what you would benefit unless you were doing some specialized app, like perhaps distributing code, apps, etc? That shows the model of the modem included, as well. Quectel EC25AF, EP06A - both mPCIe, AirPrime (Sierra) MC7455 mPCIe, EM7565 M.2 also Sierra Wireless and finally the M.2 based Quectel EM12-G global model all with a variety of bands, which you can look up if it is truly important to you and in almost all cases - it's not. That's why they are smart enough to negotiate - and also why the sometimes make weird (and wrong) choices. You really want to figure out aggregation if you have it available and start looking at MIMO options, likely best choice being LPDA (Log Periodic Dipole Array) antenna. You can spend $0 and use the included bat wings rated 5dBi up to beaucoup bucks for a pair of truly overkill LPDA rated at crazy (and almost surely overstated) numbers like 15dBi up to 19dBi mounted at 90 degree opposing for MIMO 2x2. Realize that you're amplifying noise equally with the good and SQ is always King!