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submitted 1 week ago* (last edited 1 week ago) by thelastaxolotl@hexbear.net to c/chapotraphouse@hexbear.net

Machu Picchu is an Inca settlement located in the High Andes of Peru in the Urubamba Valley, north of Cuzco. The site, perched high above the Urubamba river, has been variously described as a fortress, imperial retreat and ceremonial precinct. It was founded by Pachacuti Inca Yupanqui in c. 1450 CE, had capacity for around 1,000 residents at its peak, and ranked amongst the most sacred of all sites for the Inca. Following the collapse of the Inca empire, Machu Picchu was abandoned and forgotten, only to be rediscovered in 1911 CE by the explorer Hiram Bingham. Machu Picchu is listed by UNESCO as a World Heritage Site.

Purpose

Machu Picchu (meaning 'old hill') was an imperial estate founded by and belonging to Pachacuti Inca Yupanqui, the Inca ruler, in the mid-15th century CE. The ownership of the site was later passed to Pachacuti's successors. On its rediscovery by the explorer Hiram Bingham in 1911 CE (although local residents in the valley had always known of the site's existence) it was claimed as the last capital of the Incas. However, this proved to be untrue when the actual final capital was discovered at Vilcabamba, further downstream in the Urubamba Valley.

Another hypothesis concerning the site posed by early historians was that Machu Picchu was a fortress and the strong walls, large towers, and dry moats were cited in support of this theory. The need for fortification perhaps sprang from a series of severe droughts which made the competition for resources fierce. This would also explain why the site was not occupied for very long as when the water situation improved the necessity for such citadel sites declined.

Once again though, further study has revealed that most of the architecture was designed for religious purposes and the fortifications may well have been put in place to ensure only a select few could enter this sacred site. In further support of this interpretation, a road was discovered which linked the site to several residential settlements dotted along the valley. The most likely purpose of Machu Picchu, then, was as a sacred site, probably to the sun god Inti and with the additional purpose of reminding the recently conquered local population of the power and might of Pachacuti and the Inca empire centred at its capital Cuzco.

The site was abandoned by the Inca shortly before Pizarro and the Spanish conquistadors arrived. The invaders never reached Machu Picchu, though, and the site would remain unknown to the wider world for 400 years.

Full Article by Mark Cartwright https://www.worldhistory.org/Machu_Picchu/

From UNESCO https://whc.unesco.org/en/list/274/

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[-] Abracadaniel@hexbear.net 11 points 3 days ago

So far I've found that in hilly or forested areas it can be tough for a handheld meshcore node to get a signal out, even if it's hearing the mesh quite well.

The repeaters don't have this problem due to high placement and powerful antennas. Since they're solar powered low power Tx is a benefit to them.

That is to say that if you're just starting out consider a higher power pre-built companion node like the heltec v4 expansion kit. It has ~2x the effective range of the 22dBm Tx nodes.

[-] culpritus@hexbear.net 1 points 2 days ago

I find the companions are mostly only effective if there is near LoS to a repeater. I've considered getting a more powerful companion device, but don't really want to have to build my own. I'll look around for prebuilt hltv4 options though, might be something out there that's reasonable. Ultimately I'd really like something with a real keyboard, but beyond refurbing an old netbook into a cyber deck, seems like there's not many options in the niche space so far.

[-] Abracadaniel@hexbear.net 2 points 2 days ago

People really like the tdeck plus with the wadamesh firmware but it's at 22dBm.

[-] decaptcha@hexbear.net 1 points 2 days ago

Do you have any recs for a repeater node in said hilly and forested areas?

[-] Abracadaniel@hexbear.net 3 points 2 days ago* (last edited 2 days ago)

Sadly none as specific as for companions, it seems lots of people build their own. The recommended priority for repeater performance is

  1. height -> 2. antenna -> 3. Tx power

Anetenna gain is "free" whereas Tx costs you energy with every packet. FCC limits are 36dB (Tx + antenna gain).

Idk if you can even get a 14dB monopole to hit that at 22dBm. So the "maximum" reach sweet spot is probably 28dBm plus 8dB antenna.

If you can rig one to the top of a tree that's often the best option. I have a sensecap P1 solar on a pole above the roof of my house w/ a 5dB antenna and it works great for getting me heard by the more professional units nearby. If it were hanging from one of my trees it'd be even better but the unit just isn't built for that.

For DIY here's a community design made for hanging that I really like: https://www.printables.com/model/1490873-the-corebell-a-meshcoremeshtastic-solar-node/comments#preview.6m0iE

[-] decaptcha@hexbear.net 1 points 2 days ago* (last edited 2 days ago)

Awesome, thanks! I picked up a few Heltec v4 boards and kinda just waiting until I have capacity to mess with them. With a proper enclosure, antenna, and power source it sounds like they could perform just as well as a prebuilt repeater... is that right? Though with time at a premium I'm not opposed to buying something premade. Thanks again!

[-] Abracadaniel@hexbear.net 2 points 1 day ago

Yes they could. A pre-built doesn't have any special performance it's just convenient. Kinda like a PC but with far fewer components and meaningful performance metrics. Also like a pc there are lots of options for the software you run on it.

I have a RAK 1watt unit but I can't really use it until I buy a bunch of other components so it's just sitting in a drawer :( coulda got a heltec expansion kit for the same price and had a working device!

[-] decaptcha@hexbear.net 1 points 1 day ago

Much obliged! I used to be big into PC building so I appreciate the comparison. From your comment about the RAK unit it sounds like a very apt comparion too!

this post was submitted on 24 Jul 2026
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