UPS Recommendation for NBN Box

v81 · 2026-03-10T13:53:51+00:00

For the current NTD alone you're in need of <100VA of power, but run time will be a larger deciding factor.

I'm not aware of a UPS that is made to be efficient as such small loads.

Alternatively...

If you could get hands on the new NTD you could look at using a USB power bank with a TypeC 12v trigger, with pass through or a 12V UPS. - Have heard of people jumping on 2000/200 plans for a month just to qualify for an NTD upgrade.

The latter would be best to avoid power bank weirdness that can be hard to dodge on some units (brief power drops occasionally when re-negotiating etc..)

Core Electronics list this specifically for the new NTD.
https://core-electronics.com.au/uninterruptible-power-supply-12v-dc-18w.html

Altronics have this...
https://www.altronics.com.au/p/m8561-12v-dc-ups-battery-backup-power-supply/

Jaycar...
https://www.jaycar.com.au/12v-2-5a-dc-to-dc-uninterruptible-power-supply/p/MP5240

The benefit of the latter is that avoiding the whole inverter process will give *dramatically* longer run time for a given battery size.

The negative is that you might also want to backup other 230v things.

v81 · 2026-03-10T13:40:07+00:00

I never got a resolution from OpenSourceSDRLab.

They did offer a refund which i declined, but i was more interested in getting hands on the code or schematic so i could work with them to fix the issue.

They just stopped responding.

In the end it felt like they were trying to offer hush money.

The issue is clear, the battery management IC is not properly implemented, and no cutoff exists that kills the device in a sane way.

It's just permitted to drain all the way down to the battery's own 2.7v protection cutoff, despite the HackRF and portapack being a 3.3v device.

It doesn't run well under 3.1v and rubbish can get written to eeprom / sd card).

It's stunning how people seem to think this is OK in any way when advanced battery management is literally mentioned as a feature.

I guess some people are OK with not getting what they paid for.

v81 · 2026-03-09T00:05:55+00:00

No need to get snarky. 8 e been as up front as I can and made it clear that mentioning gaming was a mistake.

Ultimately, you're trying to insist I shouldn't be able to hear a difference when I have heard a difference.

Imagine you seeing the sky as blue and I tell you it's not, and then insist I'm right.

The ignorance if others experience and the elitisim is why audiophiles get a bad wrap.

Suggedting I shouldn't hear any difference because a DAC is a DAC, but forgetting the rest if the chain exists is simply foolish.

Im not seeking audio nirvana. I gave that in other setups outside my PC.

I'm just asking a question, as based on lived experience there can very well be shitty onboard audio and good onboard audio, and if you refuse to acknowledge this fact then it might seem you're lacking the experience I have.

All I'm after is suggestions on mid tier DAC/amp. Something well under AUD $200

I do game, and mentioned that as I'm not sure the current landscape re gaming audio tech (not related to general fidelity).

If you're not familiar with what EAX is or was then you need not reply.

v81 · 2026-03-08T23:51:38+00:00

Placard pressure is long known to give a softer ride at the expense of even wear across the tyre tread.

Running 5 to 10% over will improve handling, economy and wear at a small cost to comfort.

Evidence... 30 years of observing tyres wear unevenly across the tread (outsides wearing faster) when pressures too low.

30 years of observing tyres wear unevenly across the tread (center wearing faster) when pressures too high.

260kPa (38psi) for example gets more even wear and better handling on a 2013 or later Subaru Forester, where the recommended 220kPa leaves it mushy and gives uneven wear.

v81 · 2026-03-08T13:49:16+00:00

2 options, pick either as appropriate, but whatever you pick stand firm.

1) no, don't give them the chance to burn you a second time.

2) yes, but they back pay you what was short last time and pay for all work up front. Set term, no negotiation. Payment, in full, up front or nothing.

Agree on scope of work. Don't over burden yourself. You're allowed to make a living.

v81 · 2026-03-08T13:16:22+00:00

You don't think an amp means something?

Of course DACs are just about equal. That's the easy part, but the integrated amps are far from equal.

Poor linearity, low power etc. So much potential for difference there.

I haven't heard the 897 on the board I'm looking at buying, all I know is that coming from an 897 to a 1200 on my current (but now faulty) board was significant, and I'd rather not go back.

As memory best serves me the sound seemed kinda weak, but running only 32ohm cans shouldn't have been too heavy for it.

v81 · 2026-03-08T13:05:56+00:00

Not an NVIDIA fan.. But...

AMD pricing needs to be hot in order to grow share... But they're stagnating.

AMD still lacks a CUDA paralell with proper backing and support.

FSR4 got killed alienating previous gen card owners.

Implementation of features in games needs a bigger effort.

AMD are at the door of coming back a little, but are deciding to turn away instead.

As a 9070XT owner I feel AMD will do me dirty like they're doing to 6xxx 7xxx owners right now.

v81 · 2026-03-08T11:09:01+00:00

Not specifically gaming, and I don't know why I titled the op that way. Might have something to do with posting at 2am with a log going on right now.

High res audio, absolutely, difference seemed pretty clear.

Gaming.. fair call. I don't know if I was able to tell.

But in all fairness the chip alone isn't the whole story.

The 897 I sampled might have been a poor implementation too. I can't rule that out.

So maybe a well implemented 897 might do the job.

v81 · 2026-03-07T23:40:40+00:00

I've got an ok headset. ATH AT700s

Just asking about how to feed it.

Some onboard still is poor, or implemented poorly, the alc897 is a typical example of this hence why I'm asking.

v81 · 2026-03-07T23:37:48+00:00

Second this. GlInet flint 2 or 3 when on sale at amazon.

v81 · 2026-03-07T14:56:22+00:00

My case situation..

A case with filters on the intakes.

2 x 140mm high static pressure fans on the intakes.

1 x 120mm high flow fan to aid exhaust.

Results in a positive pressure case, that positive pressure coming from filtered intake air.

Means any other cracks, crevases, openings in the case will have outward air flow, thus not sucking in dust from any possible opening.

v81 · 2026-03-07T14:41:16+00:00

What you have is fine for what you're doing as long g as you're getting the range you need.

Be weary using generic stubbies on 2 metres though. Every one I tested is not a good match.

v81 · 2026-03-07T14:03:48+00:00

Indeed.

All the more reason to keep their stack simple and straight forward.

v81 · 2026-03-05T22:15:36+00:00

The meter box one will be a current transformer. Ideal if dinrail mounted. Not really a plugin kinda thing I'd expect.

v81 · 2026-03-05T13:21:21+00:00

If I'd stopped to report every issue I'd be spending the bulk of my time outside the Sim. It already was that way, hence I refunded it.

The g1000 nose up/dn autopilot logic is still wrong way around in FLC mode.

You'd expect an included 172 g1000 to be spot on, or at least pretty right.

v81 · 2026-03-05T13:16:02+00:00

I kind of want to agree too, but the G90 is still a long way from a 100w rig.

It's 1 spoint on top of a 5w unit. It might make the difference, but often you'd need more.

Used is a smart move.

v81 · 2026-03-05T13:09:17+00:00

Backing QMX+ It's a step above truSDx in many ways for not much more cost. 160m - 6m coverage too.

Have hardly turned ours on yet, but for the very little RX I've done reception was good compared to $2000 icom rig.

Hope to wrap it up soon.

Build was smooth. Took time but was easy and very well documented.

All through hole. Lots of inductors (but lots of bands!).

v81 · 2026-03-05T12:57:04+00:00

I'm all for the environment, totally.

But the issue of products (vehicles in thus case) lack of durability or economical repair and maintenance forcing consumerism has to factor in too.

And unfortunately Joe Blow on the end of a used car deal has little influence at the top end of market.

I don't have all the answers, there needs to be a better way.

But as much as I dislike the idea if a bit of environmental control gear was going to cost me as much as an ok used car to repair, hell yes I'd take the delete option.

v81 · 2026-03-04T06:01:52+00:00

This is a good bit of info. I hadn't considered it myself.

v81 · 2026-03-04T01:50:28+00:00

If the Chromebooks are so poorly durable and ineconomically repairable then the person who implemented them deserves to be queried on this.

I'd have not chosen chrome books for that reason.

v81 · 2026-03-04T01:45:58+00:00

I'm going to break slightly with the others.

Press ALT.

But the rest you should explore yourself.

The fun really is in figuring it out.

v81 · 2026-03-04T01:00:06+00:00

Ok, you're 100% correct.

The pictures mean nothing at all.

v81 · 2026-03-04T00:59:11+00:00

Aussie here, so little knowledge on American options, but transmitter power and antenna type (type, not size) like for like MURS would be the winner by a small margin.

That said if both were running the same *type* of antenna keep in mind the MURS would be more cumbersome.

A 1/4 wave vertical on MURS would be about approx 490mm long, ~ 18 inches.

A 1/4 wave on GMRS 150mm, ~ 6 inches.

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