Sony TA5650 Vfet & ST3950 tuner

[andyrlb]

What a lovely sounding amp , as some have said “ valve like “ .
The tuner ain’t no slouch either BUT it has the screw on type coax connector ( like a satellite box ) , the ones I have don’t fit correctly as I think the threads are slightly different.
Can anyone advise please?
The manual says coaxial F connector which is what I’m using ( I think )




https://uploads.tapatalk-cdn.com/20230121/c8c559068d011537006e7e9f6a1d66c1.jpg


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[struth]

is it a bnc type or f type screw...

https://m.media-amazon.com/images/I/61LdqzKRfiL._AC_SL1068_.jpg
bnc


https://m.media-amazon.com/images/I/21Sk9Im2W-L._AC_.jpg

f type

[andyrlb]

It’s the F type Grant but I’ve tried 2 and they’re lose and don’t tighten up .
It’s not threaded or damaged in anyway

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[Macca]

More lovely equipment from the proper days. You're practically wading in it!

[andyrlb]

More lovely equipment from the proper days. You're practically wading in it!

Thanks mate. If the Sony had the Yamaha’s looks it would be the perfect amp ( or the Yammie had the sound of the Sony )


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[struth]

if not done all the diodes will need replacing as will some resistors or itll go boom...

[andyrlb]

if not done all the diodes will need replacing as will some resistors or itll go boom...

It’s all been done mate [emoji1303]


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[walpurgis]

What a lovely sounding amp

I knew you'd like it! :)

[Macca]

Thanks mate. If the Sony had the Yamaha’s looks it would be the perfect amp ( or the Yammie had the sound of the Sony )


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I like the look of the Sonys as much as I do the Yammies. They may be quite different but both look proper in their own way.

[andyrlb]

I knew you'd like it! :)

I’m hoping it’ll drive the inefficient B&O’s


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[Barry]

Get yourself one of these and use a conventional Belling & Lee aerial plug.

https://www.amazon.co.uk/Connector-Socket-Aerial-Adapter-Silver/dp/B07Z4CLT9N/ref=pd_lpo_1?pd_rd_w=WjAAr&content-id=amzn1.sym.2d229339-2f42-4596-a90d-b81a4f52d6d3&pf_rd_p=2d229339-2f42-4596-a90d-b81a4f52d6d3&pf_rd_r=TDDGKNFZEF9XMM7ZC9QJ&pd_rd_wg=ijbXj&pd_rd_r=5bd02ee1-54c7-49d0-8108-70b51bda0e46&pd_rd_i=B07Z4CLT9N&psc=1

(According to a radio ham friend of mine, F-connectors are so called because they're F - ucking useless! :D )

[andyrlb]

Get yourself one of these and use a conventional Belling & Lee aerial plug.

https://www.amazon.co.uk/Connector-Socket-Aerial-Adapter-Silver/dp/B07Z4CLT9N/ref=pd_lpo_1?pd_rd_w=WjAAr&content-id=amzn1.sym.2d229339-2f42-4596-a90d-b81a4f52d6d3&pf_rd_p=2d229339-2f42-4596-a90d-b81a4f52d6d3&pf_rd_r=TDDGKNFZEF9XMM7ZC9QJ&pd_rd_wg=ijbXj&pd_rd_r=5bd02ee1-54c7-49d0-8108-70b51bda0e46&pd_rd_i=B07Z4CLT9N&psc=1

(According to a radio ham friend of mine, F-connectors are so called because they're F - ucking useless! :D )

Thanks Barry [emoji1303]


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[andyrlb]

Well I’ve now got the Sony hooked up to the B&O’s and it’s doing a pretty good job , the Roksan still has the edge by a small margin imo .


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[Firebottle]

That's a very good shout Barry, yes F type connectors are the spawn of the devil.

Andy, sometimes F type connectors are difficult to locate on the thread initially. Once done up they have to be'nipped' to make good RF contact.
Horrible things.

[andyrlb]

That's a very good shout Barry, yes F type connectors are the spawn of the devil.

Andy, sometimes F type connectors are difficult to locate on the thread initially. Once done up they have to be'nipped' to make good RF contact.
Horrible things.

Done it now mate , with the f type plug I can’t get any stations in stereo but without the plug and just the wire poked in and the wrapped around the thread I then get stations in stereo [emoji16]

Now they’re a little tight in there so a silent fan may be on order

https://uploads.tapatalk-cdn.com/20230121/82085f0f1b4eca2138e1abf8728e7908.jpg


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[Firebottle]

Do you realise that the F type has no centre pin?

The inner conductor from the coax has to be cut long to form the centre pin, it can be bent and shorted whilst trying to mate with the socket.
As I said horrible things.

[andyrlb]

Do you realise that the F type has no centre pin?

The inner conductor from the coax has to be cut long to form the centre pin, it can be bent and shorted whilst trying to mate with the socket.
As I said horrible things.

Ah ! Maybe that’s where I’m going wrong, I have it too short I reckon.

Thanks Alan


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[struth]

Do you realise that the F type has no centre pin?

The inner conductor from the coax has to be cut long to form the centre pin, it can be bent and shorted whilst trying to mate with the socket.
As I said horrible things.

yup they are really used as emergency plugs, or were...but if you set one right it often works for years

[struth]

should add you can get the f plug to coax adaptor. it screws into unit and leaves a coax type socket

[Barry]

should add you can get the f plug to coax adaptor. it screws into unit and leaves a coax type socket

Yes, that is what I suggested: https://www.amazon.co.uk/Connector-S...7Z4CLT9N&psc=1

https://m.media-amazon.com/images/I/613pM3HRImL._AC_SL1001_.jpg