FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine Sometimes I even put it in the food

On Thu, 21 May 2009 13:59:13 -0700, Jim Thompson
wrote:

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Stormy on the East Coast today... due to Bush's failed policies.

"Jim Thompson" wrote in
message ...
On Thu, 21 May 2009 13:59:13 -0700, Jim Thompson
wrote:

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS. till we
were invaded by F** connectors with the advent of cable TV.

"Jim Thompson" wrote in
message ...
On Thu, 21 May 2009 13:59:13 -0700, Jim Thompson
wrote:

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS. till we
were invaded by F** connectors with the advent of cable TV.

"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug

"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug

In message , John
writes

"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug

It's interesting that Wikipedia says "It was originally only intended
for medium frequency broadcasts, where accurate impedance matching of an
antenna connector is not a concern."

It goes on, "Unlike the coaxial F connector used today for the same
purpose in North America, the IEC 169-2 connector is not matched to the
75-ohm characteristic impedance of the antenna cable used. The lack of
impedance matching causes signal reflections in the cable, leading to
noticeable signal distortion on VHF and UHF frequencies (but not MW or
Shortwave)."

I've always thought (and in my experience) that 'Belling Lee' / IEC
169-2 connectors are a pretty good match up to UHF. I feel that they
might be mixing things up with the PL259/SO239 combination.

Anyway.....
In the UK and Europe, many of the TV/FM (usually diplexed) wall outlet
plates have/had 'sexed' connectors. The male was the TV, and the female
the FM. The idea was that, using a coax jumper with opposite sex
connectors on each end, you would plug the male end into the TV set
female socket, and the female end into the wall-plate male. It was vice
versa for the FM, where the radio was supposed to have a male input
connector. [In my opinion, a right pain in the backside!] Maybe this is
what the OP has?
--
Ian

In message , John
writes

"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug

It's interesting that Wikipedia says "It was originally only intended
for medium frequency broadcasts, where accurate impedance matching of an
antenna connector is not a concern."

It goes on, "Unlike the coaxial F connector used today for the same
purpose in North America, the IEC 169-2 connector is not matched to the
75-ohm characteristic impedance of the antenna cable used. The lack of
impedance matching causes signal reflections in the cable, leading to
noticeable signal distortion on VHF and UHF frequencies (but not MW or
Shortwave)."

I've always thought (and in my experience) that 'Belling Lee' / IEC
169-2 connectors are a pretty good match up to UHF. I feel that they
might be mixing things up with the PL259/SO239 combination.

Anyway.....
In the UK and Europe, many of the TV/FM (usually diplexed) wall outlet
plates have/had 'sexed' connectors. The male was the TV, and the female
the FM. The idea was that, using a coax jumper with opposite sex
connectors on each end, you would plug the male end into the TV set
female socket, and the female end into the wall-plate male. It was vice
versa for the FM, where the radio was supposed to have a male input
connector. [In my opinion, a right pain in the backside!] Maybe this is
what the OP has?
--
Ian

On 2009-05-24, Ian Jackson wrote:
It goes on, "Unlike the coaxial F connector used today for the same
purpose in North America, the IEC 169-2 connector is not matched to the
75-ohm characteristic impedance of the antenna cable used. The lack of
impedance matching causes signal reflections in the cable, leading to
noticeable signal distortion on VHF and UHF frequencies (but not MW or
Shortwave)."

Yeah, I've meaured less insertion loss (by about 0.5dB) with a mating pair
of the (nickel?) plated brass Belling-Lee antenna connectors than I'd get
with a pair of F connectors and a joiner. The plastic Belling-Lee
connectors are worse, and the aluminium ones tend to become encrusted.
At the time I was mainly interested in stations broadcasting at around
450Mhz

On 2009-05-24, Ian Jackson wrote:
It goes on, "Unlike the coaxial F connector used today for the same
purpose in North America, the IEC 169-2 connector is not matched to the
75-ohm characteristic impedance of the antenna cable used. The lack of
impedance matching causes signal reflections in the cable, leading to
noticeable signal distortion on VHF and UHF frequencies (but not MW or
Shortwave)."

Yeah, I've meaured less insertion loss (by about 0.5dB) with a mating pair
of the (nickel?) plated brass Belling-Lee antenna connectors than I'd get
with a pair of F connectors and a joiner. The plastic Belling-Lee
connectors are worse, and the aluminium ones tend to become encrusted.
At the time I was mainly interested in stations broadcasting at around
450Mhz

On Sun, 24 May 2009 03:54:25 -0000, "John"
wrote:


"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug


Mine's a little different, but that's basically the jack I have. I
found an old friction-fit cable in my junk box and added a type-F
(threaded) to the other end, to connect to the wall jack. Makes the
wife happy, FM antenna now in attic rather than pinned to the wall ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Stormy on the East Coast today... due to Bush's failed policies.

On Sun, 24 May 2009 03:54:25 -0000, "John"
wrote:


"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug


Mine's a little different, but that's basically the jack I have. I
found an old friction-fit cable in my junk box and added a type-F
(threaded) to the other end, to connect to the wall jack. Makes the
wife happy, FM antenna now in attic rather than pinned to the wall ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

Stormy on the East Coast today... due to Bush's failed policies.

John wrote:
"John G." wrote


FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.


and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug



I have always hated this connector.
I recollect unpicking the braid of the coax and then hooking the centre conductor through a hole in the braid.
And then soldering the centre conductor - and hoping that the plastic in the plug does not melt overly.
Also, the braid would fragment when tightening the connector.
Horrible thing. I much prefer the F connector.

Nowadays one can buy adaptors that interface to the F system thereby avoiding the hassle of wiring these connectors.

On 2009-05-25, richard wrote:
John wrote:
"John G." wrote


FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling & Lee
coax connector, almost universally used for TV antennas etc in AUS.


and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug



I have always hated this connector.
I recollect unpicking the braid of the coax and then hooking the centre conductor through a hole in the braid.
And then soldering the centre conductor - and hoping that the plastic in the plug does not melt overly.
Also, the braid would fragment when tightening the connector.
Horrible thing. I much prefer the F connector.

they are available in crimp fitting variants and also screw
termination.

the screw ones work better, but the crimp ones are faster.

Nowadays one can buy adaptors that interface to the F system thereby avoiding the hassle of wiring these connectors.

Faced with an urge to avoid hassle, I'd pick the crimp option.

Bye,

"Ian Jackson" wrote in message
...
In message , John
writes

"John G." wrote

FM Input to a receiver BUT...

At first glance, looks like RCA jack, except...

Bigger diameter, and has a male pin in the middle.

Any ideas for a mating connector, to connect to RG-6?

...Jim Thompson

Helps to surf the web and find the manual... it's a screwy
friction-fit type-F :-(

...Jim Thompson

Without the benefit of a picture I would guess it could be a Belling &
Lee
coax connector, almost universally used for TV antennas etc in AUS.

and in EU and a number of other countries

http://en.wikipedia.org/wiki/TV_Aerial_Plug

It's interesting that Wikipedia says "It was originally only intended for
medium frequency broadcasts, where accurate impedance matching of an
antenna connector is not a concern."

It goes on, "Unlike the coaxial F connector used today for the same
purpose in North America, the IEC 169-2 connector is not matched to the
75-ohm characteristic impedance of the antenna cable used. The lack of
impedance matching causes signal reflections in the cable, leading to
noticeable signal distortion on VHF and UHF frequencies (but not MW or
Shortwave)."

I've always thought (and in my experience) that 'Belling Lee' / IEC 169-2
connectors are a pretty good match up to UHF. I feel that they might be
mixing things up with the PL259/SO239 combination.

snip
Ian

That brings back memories - I worked at Belling & Lee in their Test House
for a summer back in '67. Among the fun stuff was testing high pin count
(256 way +) connectors for Concorde to establish allowable number of
insertions, and helping to test a 1-amp circuit breaker to establish it
would
still break the circuit when we stuffed 4000 amps through it.

There was also a HF lab there where they designed things like professional
TV repeaters, which used those Belling Lee connectors up to 800MHz.
The match was pretty good if I recall correctly.

Cheers
(another) Ian