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Ive been here for quite some time, quietly learning.
My LF 125khz voltage started dropping recently, I noticed it last week at first.
Im getting 14-15v on the 125 khz side (not bad, but not the + 22v I was getting originally.)
The 134 khz side looks fine tho. bad divisor?
I figured it was a faulty antenna, I ordered a brand new one from rsyv. Same exact problem. Same exact results.
So Im ruling out that the antennas are good.
Is it a setting or did I fry something on the board?
How do I get that 125 khz up!
PS (just purchased an elechouse board, I ruled out the software client, maybe I need to update the pm3 flash on board? )
-Lockakey
proxmark3> hw version
#db# Prox/RFID mark3 RFID instrument
#db# bootrom: /-suspect 2015-06-23 13:21:04
#db# os: /-suspect 2015-06-23 13:21:10
#db# HF FPGA image built on 2015/06/22 at 21:47:54
uC: AT91SAM7S256 Rev A
Embedded Processor: ARM7TDMI
Nonvolatile Program Memory Size: 256K bytes
Second Nonvolatile Program Memory Size: None
Internal SRAM Size: 256K bytes
Architecture Identifier: AT91SAM7Sxx Series
Nonvolatile Program Memory Type: Embedded Flash Memory
proxmark3> hw tune
Measuring antenna characteristics, please wait.........
# LF antenna: 14.44 V @ 125.00 kHz
# LF antenna: 26.95 V @ 134.00 kHz
# LF optimal: 28.32 V @ 131.87 kHz
# HF antenna: 1.10 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3> hw tune
Measuring antenna characteristics, please wait.........
# LF antenna: 14.44 V @ 125.00 kHz
# LF antenna: 26.95 V @ 134.00 kHz
# LF optimal: 28.32 V @ 131.87 kHz
# HF antenna: 1.10 V @ 13.56 MHz
# Your HF antenna is unusable.
Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.
proxmark3>
Too little go to with. But general recommendations applies.
1. compile / flash lastest official repo firmware
2. run client and see if something got better?
3. check hardware, is something loose?
4. RMA from where you bought it?