| Products > Test Equipment |
| Banggood 50 ohm BNC feed-through terminator - a quick review |
| (1/15) > >> |
| TheSteve:
Some time last year someone posted that Banggood had 50 ohm feed-through terminators for what is a reasonable price(6.66 USD shipped for a pair). I ordered a pair in December last year but they never arrived and a few months back Banggood issued me a refund. I was shocked yesterday when they arrived. It only took 7 months... I did a quick check with a DMM and found one was near 50 ohms, the other though is 100 ohms - so quality control may be an issue. Long story short the 50 ohm one actually works reasonably well. Here is a picture showing SWR(return loss). I wouldn't really want to use these at 1 GHz but that shouldn't ever happen as any scope with such a high frequency will have a builtin 50 ohm terminator. For those with scopes up to 500 MHz without builtin 50 ohm terminators these will do the job though. Resistor is close enough: |
| BravoV:
--- Quote from: TheSteve on July 07, 2017, 02:54:46 am ---For those with scopes up to 500 MHz without builtin 50 ohm terminators these will do the job though. --- End quote --- Steve, thank you, this is exactly what I'm expecting to hear. :-+ |
| alm:
The 100 Ohm one might be an open resistor if they used 2 100 Ohm chip resistors in parallel. That seems very close to the specs of the Pomona 4119-50: VSWR < 1.1 up to 250 MHz and < 1.2 up to 500 MHz. That one uses a carbon film resistor. The Tek 011-0049-01 is better (VSWR < 1.2 DC-1 GHz). But still sounds like excellent value for the money. |
| BravoV:
--- Quote from: alm on July 07, 2017, 03:27:06 am ---The 100 Ohm one might be an open resistor if they used 2 100 Ohm chip resistors in parallel. That seems very close to the specs of the Pomona 4119-50: VSWR < 1.1 up to 250 MHz and < 1.2 up to 500 MHz. That one uses a carbon film resistor. The Tek 011-0049-01 is better (VSWR < 1.2 DC-1 GHz). But still sounds like excellent value for the money. --- End quote --- Yep, value for money for < 500 MHz works its very good. As its full metal body, the physical built and mechanically is pretty decent imo, took a close up shot -> HERE (Beware of huge photo) |
| TheSteve:
So far the 100 ohm one doesn't want to come apart. I haven't gone all crazy on it though. |
| Navigation |
| Message Index |
| Next page |