FA-3 Frequency Counter by BG7TBL

[@johnwest7993]

When I adjust a crystal reference I do it with the cabinet in the orientation I will be using the reference. Gravity causes a slight frequency shift depending on the Xtal orientation.

[@Electrotech1980]

Thanks for the effort. I just wonder why you used 0.1S gate time rather than 1S or even 10S to compare results? I've been comparing mine to a GPS reference and I'm quite impressed. I found these specifications on an Ali Express ad. FA-3 Frequency Counter Frequency Meter 1Hz-6G 11Bit/Sec High-Precision FA-3 FREQ COUNTER Specifications: - Type:FA-3-6G/FA-3-12.4G/FA-3-26.5G/FA-3-6GP - CH1 frequency range: 1Hz-300MHz - CH1 input impedance: 50Ω/1MΩ - CH1 input reference sensitivity: 50Ω: 25mVrms-2Vrms; 1MΩ: 25mVrms-2Vrms - CH1 frequency accuracy: 0.1-second gate: 0.001Hz at 10M; 1-second gate: 0.0001Hz at 10M; 10-second gate: 0.00001Hz at 10M - CH1 measurement speed: 11 bits/sec at 10M - CH1 power test range: -50DBM to +20DBM, 1M-550M at 50 OHM - CH1 power measurement accuracy: 0.5DB at 10MHz - CH1 interface type: BNC - CH2 frequency range:6G:30MHz-6GHz /12.4G:200M-12.4G/26.5G:200M-26.5G/6GP:30MHz-6GHz(with power meter) - CH2 input impedance: 50 OHM - CH2 frequency accuracy: 0.1-second gate: 1Hz at 1GHz; 1-second gate: 0.01Hz at 1GHz; 10-second gate: 0.001Hz at 1GHz - CH2 input power: 6G: -20dBM to +13dBm at 0.5-5G - CH2 interface type: SMA - Gate time: 0.1 second/1 second/10 second - Internal reference frequency: 10MHz - Internal reference type: OCXO - Internal base year aging: 0.5Hz - Internal reference output port power: 4dBm - External reference input power range: 6G:-20dBM- +13dBm@0.5-5G、 12.4G:-20DBM-+13DBM@0.2-10G、26.5G:-15-+5DBM@1G-26.5G /6GP:-20-+13DBM@0.5-5G - Panel screen: 3.2 inches, 128*64pixel - Operation modes: CH1 frequency measurement mode, CH1 statistical mode, CH2 frequency measurement mode, CH2 statistical mode - Statistics mode data types: average, maximum, minimum, peak-to-peak value - Power supply: 11.7-12.5V, Start:

[@raymiller5738]

Thanks for the video always helpful to have another view of the instrument, seems to be well constructed and as you say would be good to have a manual with codes etc. Is there any way to battery power as an option I wonder? One of the web pages gives this as an option. The low frequency cut-off is probably due to the input coupling capacitor, so adding a parallel one on CH2 would lower it to be more in specification?

[@marcinmakan9710]

Hello, what is the maximum voltage (or amplitude) of a signal that the BGT7TBL FA-3 (or FA-2) frequency counter can handle? I would appreciate your support a lot!

[@richardmiranda5357]

I just checked on eBay and there is a bunch o FA-3 for a decent price. All from China.

[@pedromoreno4430]

Hi there, Can I use any of these frequency meters to measure EMF (up to 30Ghz) connected directly to a passive microwave antenna? I´m interested in measuring the millimetric 5G radiation received in my home and I don´t want to spend thousand of euros in a professional EMF device.

[@stevestrivia-bystevewagner4852]

Not that I know of. Steve

[@germanjohn5626]

had you printed on both sides of the paper you culd have condensed it even more lol

[@t1d100]

👍