[GoldenSound]

My status as running a YouTube channel is in every single post I make as part of my signature. The YouTube revenue model doesn't cover the cost of my time - I don't do the videos for money.

I don't know man, youtube is paying me so much I'll probably be able to retire in a couple months!

 

[Loquah]

@GoldenOne that is exactly the kind of information I was seeking - thank you!

My attempts to balance the conversation at the reasonable urging of an ASR member ended much as I expected, but I am thankful that it assisted in posing the questions leading to your detailed reply.

 

[Loquah]

I don't know man, couple more months of this and I'll be retiring with all these riches!

I reckon. Hoping to place a deposit on my second Ferrari next week

 

[Loquah]

Glad @GoldenOne answered that. But the WTA windowing function does not look like the one shown, as I have never published it, and it's visually different to that. But don't ask me what it does look like...

One follow-up to this that I let slide in our interview so as not to overload the technical content. Why is windowing necessary? (And is my understanding that it essentially isolating only part of the mathematical function an accurate understanding?)

 

[chesebert]

One follow-up to this that I let slide in our interview so as not to overload the technical content. Why is windowing necessary? (And is my understanding that it essentially isolating only part of the mathematical function an accurate understanding?)

Real sinc is impossible to create in real life

 

[Rob Watts]

One follow-up to this that I let slide in our interview so as not to overload the technical content. Why is windowing necessary? (And is my understanding that it essentially isolating only part of the mathematical function an accurate understanding?)

Take a look at https://www.head-fi.org/threads/watts-up.800264/post-15968970

 

[dac64]

For RF to 50/50ohm!!!

here is a picture of 75ohm female connector : https://www.audiophonics.fr/en/ante...or-75-ohm-gold-plated-o12mm-unit-p-12291.html

look similar to the one on HMS

I believe it's more difficult to differentiate between female BNC connector than male BNC connector

 

[Reactcore]

For RF to 50/50ohm!!!

here is a picture of 75ohm female connector : https://www.audiophonics.fr/en/ante...or-75-ohm-gold-plated-o12mm-unit-p-12291.html

look similar to the one on HMS

I believe it's more difficult to differentiate between female BNC connector than male BNC connector

I always found impendance specs nonsense for BNC connectors.. as a CCTV engineer i have worked 20 years.. crimped thousands of them on RG59 cables. Many equipment actually used the so called '50ohm' types on their PCB.

The difference is on the middle pin diameter.. 50ohm being thicker prox. 1mm vs 0.8mm for 75ohm. My HMS having 75ohm.

Ive swapped these connectors alot and never saw any change in the sentitive 5mhz CVBS video performace.

Only for long cable runs it matter not to have contact mass changes in between cabling causing reflections.

 

[Loquah]

Take a look at https://www.head-fi.org/threads/watts-up.800264/post-15968970

Great post and a perfect answer to my question - thank you!!

 

[Triode User]

I always found impendance specs nonsense for BNC connectors.. as a CCTV engineer i have worked 20 years.. crimped thousands of them on RG59 cables. Many equipment actually used the so called '50ohm' types on their PCB.

The difference is on the middle pin diameter.. 50ohm being thicker prox. 1mm vs 0.8mm for 75ohm. My HMS having 75ohm.

Ive swapped these connectors alot and never saw any change in the sentitive 5mhz CVBS video performace.

Only for long cable runs it matter not to have contact mass changes in between cabling causing reflections.

You raise a good point on the pin diameter. I have been called before now to look at why there was an intermittent contact with a 75 ohm plug into a bnc socket. It turned out that cables with 50 ohm connectors had been repeatedly used and the wider pin had opened up the contact in the socket and hence the poor contact when cables with the correct 75 ohm connectors were now being used.

 

[MvRBE10]

As i placed before

 

[801evan]

You raise a good point on the pin diameter. I have been called before now to look at why there was an intermittent contact with a 75 ohm plug into a bnc socket. It turned out that cables with 50 ohm connectors had been repeatedly used and the wider pin had opened up the contact in the socket and hence the poor contact when cables with the correct 75 ohm connectors were now being used.

Whoa

 

[The Jester]

You raise a good point on the pin diameter. I have been called before now to look at why there was an intermittent contact with a 75 ohm plug into a bnc socket. It turned out that cables with 50 ohm connectors had been repeatedly used and the wider pin had opened up the contact in the socket and hence the poor contact when cables with the correct 75 ohm connectors were now being used.

Strange,
From what I’ve read previously the 50 and 75 ohm pins should be the same diameter at the connection area with the 50 ohm being larger at the crimp area ?

 

[801evan]

Strange,
From what I’ve read previously the 50 and 75 ohm pins should be the same diameter at the connection area with the 50 ohm being larger at the crimp area ?

That's what I thought too. Same pin size but cable gauge may be larger for the 50ohm version.

 

[Triode User]

Strange,
From what I’ve read previously the 50 and 75 ohm pins should be the same diameter at the connection area with the 50 ohm being larger at the crimp area ?

I measured the pin diameter of the culprit 50 ohm connectors and it was fatter than all the 75 ohm connectors I have come across. Doing a bit of research just now it seems it was common place for them to be different but that it was rationalised some time ago. Perhaps some manufacturers still make the fatter version (it was modern and not vintage connectors that I measured).