BNC Male to Dual Banana Female & BNC 50ohm termination

[2X]

Hi,
does anyone know where I can find a good quality of these two connectors which use the Dave to reduse the noise at 14:40 and also the other two 50 Ohm plugs at 24:09.
I find the below connectors from china but I don't know if they are good quality and it is worth to buy them.

BNC Male to Dual Banana Female Jack Coaxial Cable RF Binding Post Adapter 2pcs
http://www.ebay.co.uk/itm/BNC-Male-to-Dual-Banana-Female-Jack-Coaxial-Cable-RF-Binding-Post-Adapter-2pcs-/361397064687?

8Pcs BNC Female Jack to RCA Male F/M RF Coaxial Cable Adapter Connectors
http://www.ebay.co.uk/itm/8Pcs-BNC-Female-Jack-to-RCA-Male-F-M-RF-Coaxial-Cable-Adapter-Connectors/192141060221?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20140122125356%26meid%3D45a974f8ff41431ba324dd590840716a%26pid%3D100005%26rk%3D5%26rkt%3D6%26sd%3D361397064687

14:40
https://youtu.be/Edel3eduRj4?t=880
24:09
https://youtu.be/Edel3eduRj4?t=1449?

[alm]

For good quality, see Pomona:
Female BNC to double banana plug
50 Ohm BNC feed-through terminator

The BNC male to dual female banana jack adapter you post is the opposite of the first. And a BNC female to RCA is something you might use to connect a scope to an analog audio device, not to measure a power supply. I personally would not worry about the quality of cheap BNC to banana jack or plug adapters, it is not like these are for high frequency use anyhow.

For a much cheaper feed-through terminator that seemed to perform decently (but note that they may have changed construction):
https://www.eevblog.com/forum/testgear/banggood-50-ohm-bnc-feed-through-terminator-a-quick-review/

The last thing Dave shows is a probe tip to BNC adapter. These often come with good probes. Some probe manufacturers (e.g. Keysight, Tektronix, Lecroy, PMK, Pomona, Probemaster) may also offer them for sale as optional accessory. If they do not, then you may have to find another one from a probe that has the same dimensions. These dimensions are not standard, so double check them.

[2X]

Hi and thanks for the reply,
For a "probe tip to BNC adapter" I find the below on Digi-key from LeCroy.

Digi-Key Part Number: PP005-BNC-ND
Manufacture: Teledyne LeCroy
Manufacturer Part Number: PP005-BNC
Description: PROBE TIP-BNC ADAP
https://www.digikey.com/product-detail/en/teledyne-lecroy/PP005-BNC/PP005-BNC-ND/3587091

[alm]

Should work fine if you have a matching LeCroy probe. If not, then only if your probe happens to have the same dimensions as the LeCroy (PMK?) probes. Like I wrote, these are not generic parts.

[2X]

I have the probes from the oscilloscope "RIGOL DS1102E". Does anyone use a "probe tip to BNC adapter" like this from LeCroy in RIGOL probes?