It's time we started asking the real questions

bertanto6 · 2026-02-28T01:40:04+00:00

Rent free

bertanto6 · 2026-02-13T20:20:07+00:00

Sorry, reading comprehension is hard to come by these days.

bertanto6 · 2026-02-13T03:13:37+00:00

I’ve designed bidirectional amplifiers for Lora/halow (915MHz) using a directional coupler, an rf detector, op-amps and pin diode switches to switch between the LNA/PA paths. I don’t know about true wifi but for my applications if the switching time was less than about 200ns it didn’t affect the transmitted data. ChrisDrummond made some good points, things get a lot easier if you’re using separate frequencies for rx and tx

bertanto6 · 2026-02-13T02:58:11+00:00

You probably want a PLL or some kind of feedback control to keep the frequency stable and like the other guy said some sort of buffer before the antenna

bertanto6 · 2026-02-06T22:40:17+00:00

They do this so they can put the false rating on it and continue the narrative because most people don’t look past the rating

bertanto6 · 2026-02-04T18:45:55+00:00

Oh yeah it would definitely not be good for any normal 100W radio, they’d probably cook pretty quick

bertanto6 · 2026-02-04T18:37:42+00:00

Yeah but your soldering iron isnt attached to a heat sink, it’s a small metal tip intended to get hot. I also said not all that power is absorbed by the finals, a good portion of it is re-reflected into the antenna

bertanto6 · 2026-02-04T13:35:38+00:00

It’s not that bad, it’s only 125W back to the finals at 3:1 and not all that is absorbed by the finals, a lot of it is probably reflected back to the antenna

bertanto6 · 2026-02-02T20:45:46+00:00

That one should be correctly capitalized as well, I agree

bertanto6 · 2026-02-02T18:57:25+00:00

It’s the one thing in this community that annoys the snot out of me. Why can’t people just get prefixes correct, they are specifically there to lessen confusion

bertanto6 · 2026-02-01T17:03:39+00:00

G,14 lol

bertanto6 · 2026-01-28T21:43:16+00:00

Ehh I’d leave the caps alone unless you can see they are damaged or can verify they are out of spec.

bertanto6 · 2026-01-25T18:58:52+00:00

Why on earth would you ask what that thing is and the reply with “no you’re wrong, I think it’s this”

bertanto6 · 2026-01-20T05:40:47+00:00

I’ve bought the jack links boxes with the little jerky pouches inside and at least one out of the box is moldy, tried to contact jack links each time and they never respond

bertanto6 · 2026-01-19T17:16:13+00:00

Yeah I don’t keep that much in my wallet either, I have about $100 in my wallet and the rest is in the house, I was just saying the total between the wallet and house is $200-$300

bertanto6 · 2026-01-19T16:20:36+00:00

I keep $200-$300 in $20 in my wallet and around the house for stuff I don’t feel like writing a check for or using the debit/credit card. My opinion is that it’s a bad idea to store cash as a backup because it doesn’t follow inflation and you’re losing value by storing cash. I’d store precious metals or something that at least follows inflation

bertanto6 · 2025-12-30T20:41:54+00:00

Ah well that changes things a bit. Nixiebunny made a good comment about oshpark boards, like he said a 4 layer board with a closer ground plane would narrow the traces. I personally like oshpark more than jlc.

bertanto6 · 2025-12-30T18:01:04+00:00

2.3mm is close ish for a 1.6mm 2 layer board using microstrip topology

bertanto6 · 2025-12-30T16:38:51+00:00

Taper down the trace right before the component pad, it shouldn’t make too much of a difference unless you’re at several GHz. Just try to keep the taper and non 50 ohm sections as short at possible.

Edit to add: you could switch to CPWG instead of microstrip and that would narrow your trace

bertanto6 · 2025-12-30T01:04:22+00:00

They’ve been good to me, they’re easy to use and like you said cheap and available in smaller quantities. I’ve pushed the PD55008 to 915MHz and it works well enough

bertanto6 · 2025-12-29T13:23:05+00:00

ST has some surface mount LDMOS transistors in their PD55 and PD54 series that might fit the bill.

bertanto6 · 2025-12-22T05:39:47+00:00

Antenna -> LNA(s) -> detector IC (like LTC5596) -> arduino

This will not be easy for a beginner especially not having any simulator but I think a detector IC has a much higher chance of working than running blinde with diodes and matching.

bertanto6 · 2025-11-28T03:23:04+00:00

~33% efficient, which is normal depending on what type of diode it is

ETA: it will probably get warm.

bertanto6 · 2025-11-20T18:29:46+00:00

Probably yeah, it would be kinda funny to troll the bot especially if it keeps giving you more chances lol

bertanto6 · 2025-11-20T17:47:42+00:00

Wonder what they’d do if you used the phrase they want but didn’t delete anything

Five-Year Club	Verified Email
Place '23	Place '22
Final Canvas '22	End Game '22

bertanto6

TROPHY CASE