Hi everyone,
I need help with my Sansui Tu-717. I t seems when I listen to my favorite FM station there is an annoying other station leaking through, it is ever so faint, it is making me crazy. What can I do to get rid of that leaking station?
Thanks
Slate
I need help with my Sansui Tu-717. I t seems when I listen to my favorite FM station there is an annoying other station leaking through, it is ever so faint, it is making me crazy. What can I do to get rid of that leaking station?
Thanks
Slate
Hi Slate,
You probably have already tried switching to "Narrow" rather than "Wide".
If you tried that and it didn't work then the best next step has nothing to do with your Sansui.
Most of the time, the antenna can be what needs adjustment or replacement with one that might give you options like direction (hopefully both stations don't come from the exact same direction). Sometimes where you have the antenna placed also causes reflections that cause this kind of trouble especially in urban areas.
There is a lot of info on the Web about Antenna types and placement. Try Google!
Good luck.
Regards//Keith
You probably have already tried switching to "Narrow" rather than "Wide".
If you tried that and it didn't work then the best next step has nothing to do with your Sansui.
Most of the time, the antenna can be what needs adjustment or replacement with one that might give you options like direction (hopefully both stations don't come from the exact same direction). Sometimes where you have the antenna placed also causes reflections that cause this kind of trouble especially in urban areas.
There is a lot of info on the Web about Antenna types and placement. Try Google!
Good luck.
Regards//Keith
Thanks Keith,
I was wondering about the antenna ....... Nonetheless what confuses me Keith is I went from
a Pioneer TX-7800 without that problem to a Sansui TU-717, now the Sansui is a lot more true to the sound than Pioneer, but I get that issue. I have the cheap rabbit ear antenna going, mind the station is strong (91 Jazz FM). I just can't understand why one has the problem and the other does not?
Thanks
Slate
I was wondering about the antenna ....... Nonetheless what confuses me Keith is I went from
a Pioneer TX-7800 without that problem to a Sansui TU-717, now the Sansui is a lot more true to the sound than Pioneer, but I get that issue. I have the cheap rabbit ear antenna going, mind the station is strong (91 Jazz FM). I just can't understand why one has the problem and the other does not?
Thanks
Slate
Hi Slate,
Each has its own subtle differences that make it strong in one point and weaker in the other. Regardless, the antenna is where you need to focus for starters!
The Sansui is the right choice here and you obviously already know that!
Here is a great reference site that will give you more info than you want to know but will help with your problem(s): http://www.fmtunerinfo.com/
Your Sansui is rated number 17 in their top 80 something Tuners and the Pioneer doesn't even place.
We will see you in a couple of days when you finish all that reading! Enjoy!
And about that leaking station, just stick your finger in it, but you have to stay there so maybe do something with the antenna instead! LOL
Regards//Keith
Each has its own subtle differences that make it strong in one point and weaker in the other. Regardless, the antenna is where you need to focus for starters!
The Sansui is the right choice here and you obviously already know that!
Here is a great reference site that will give you more info than you want to know but will help with your problem(s): http://www.fmtunerinfo.com/
Your Sansui is rated number 17 in their top 80 something Tuners and the Pioneer doesn't even place.
We will see you in a couple of days when you finish all that reading! Enjoy!
And about that leaking station, just stick your finger in it, but you have to stay there so maybe do something with the antenna instead! LOL
Regards//Keith
Look up wave trap on google There is much information there.
What you do is make a tuned circuit (capacitor and inductance)that absorbs the offending signal. you place this in series with your antenna to your receiver.
Sheldon
What you do is make a tuned circuit (capacitor and inductance)that absorbs the offending signal. you place this in series with your antenna to your receiver.
Sheldon
Hi Serratoga,
Are you able to identify the leaking station? I wonder if it is 21.4 MHz apart from the station that is disturbed.
Laszlo
Are you able to identify the leaking station? I wonder if it is 21.4 MHz apart from the station that is disturbed.
Laszlo
Sheldon that contraption is cool may have to try it out.
Laszio, I am not sure what station is?
I have been doing more tests and it seems like it is only in one channel the right channel
I can't hear it in the left channel. Is this common?
Laszio, I am not sure what station is?
I have been doing more tests and it seems like it is only in one channel the right channel
I can't hear it in the left channel. Is this common?
Only on one channel?
This takes it away from the tuner front end ie the antenna.
I would try switching cables back from the offending speaker and pit it on the other Amp channel. Then if neccessary swap tuner to Amp cables.
Make sure all yoour interconnects are clean you mah have pickup but also there has to be a diode affect to switch RF into Audio
The waqve trap will only work on the RF by attenuating a cetrain frequency.
It should/would not affect only one channel as the signal has not yet been detected and split ino L/R channels.
Small caps from amp input o ground may also help.
But try a bit of diagnosis/elim9ination first
This takes it away from the tuner front end ie the antenna.
I would try switching cables back from the offending speaker and pit it on the other Amp channel. Then if neccessary swap tuner to Amp cables.
Make sure all yoour interconnects are clean you mah have pickup but also there has to be a diode affect to switch RF into Audio
The waqve trap will only work on the RF by attenuating a cetrain frequency.
It should/would not affect only one channel as the signal has not yet been detected and split ino L/R channels.
Small caps from amp input o ground may also help.
But try a bit of diagnosis/elim9ination first
Sheldon after some rigorous tests the leakage is in both channels, it's just more prominent in one channel. I apologize , but for a moment it sounded like it was coming from one channel.
It only happens on the jazz station , no other station has this phenomena? Just my luck my favorite channel has this issue an it did not have this problem on my Pioneer TX-7800.
It only happens on the jazz station , no other station has this phenomena? Just my luck my favorite channel has this issue an it did not have this problem on my Pioneer TX-7800.
Curious: is it 91.1 you like or is it the one you do not want?
No that it matters. I liked the station even more when it was CJRT
for the FM band you need oly small inductor and Capacitor
The ARRL hand book( Library?) may have exact design if google does not supply it
You may still be getting pickup from Cables especially speaker,
does it change with moving them?, also it is common for house wiring to pick up RF rdpecially if close to transmitter antenna...CN tower for 91.1.
There are line filters that work for that, you may have to use one on your tuner. Again simply made.
Do you have a lit of appliances plugged on your audio outlet
every wire is an antenna
Hopefully i have given you some ideas
No that it matters. I liked the station even more when it was CJRT
for the FM band you need oly small inductor and Capacitor
The ARRL hand book( Library?) may have exact design if google does not supply it
You may still be getting pickup from Cables especially speaker,
does it change with moving them?, also it is common for house wiring to pick up RF rdpecially if close to transmitter antenna...CN tower for 91.1.
There are line filters that work for that, you may have to use one on your tuner. Again simply made.
Do you have a lit of appliances plugged on your audio outlet
every wire is an antenna
Hopefully i have given you some ideas
Sheldon ,
I went a little deeper in this matter , I hooked up my Pioneer tx-7800 and the problem exists in the Pioneer as well, this drove me nuts. Check out this link Sheldon.
http://www.canuckaudiomart.com/forum/viewtopic.php?t=6626
For a minute there, I thought I was going crazy.
Thanks everyone for your input........
I went a little deeper in this matter , I hooked up my Pioneer tx-7800 and the problem exists in the Pioneer as well, this drove me nuts. Check out this link Sheldon.
http://www.canuckaudiomart.com/forum/viewtopic.php?t=6626
For a minute there, I thought I was going crazy.
Thanks everyone for your input........
Well!
This certainly puts a different slant on things.
Sounds like the CRTC should be informed. A pirate station?
Why they would choose 91.1 makes no sense.
or if may be that JazzFM is multiplexing a special interest
broadcast, and they are not doing it quite right.
In this case there is nothing you can do, it certainly is not your equipment fault.,but tell them.
Also complain to CRTC they have the techies to get to the bottom of it.
This certainly puts a different slant on things.
Sounds like the CRTC should be informed. A pirate station?
Why they would choose 91.1 makes no sense.
or if may be that JazzFM is multiplexing a special interest
broadcast, and they are not doing it quite right.
In this case there is nothing you can do, it certainly is not your equipment fault.,but tell them.
Also complain to CRTC they have the techies to get to the bottom of it.
Hi Slate,
How's that for a curveball?
I recently picked up a TU717 from eBay. I have a Creek T-40 and it was expensive and good in the early 90s.
However, the Sansui is completely on another level.
One thing I can tell you is that the better the antenna, the more you will enjoy this unit. A quality antenna that is mounted high and outside will put rabbit ears to shame. So even though we weren't able to help you, something good can come from this thread. There is so much more you can get from a great tuner with a great antenna, so why not. Also research fmtunerinfo.com, they have antenna info, links and a list of Mods for the TU717.
I use a Magnum Dynalab ST-2 (small and powerful) because the townhouse that I live in won't let you mount anything outside. I made a nice bracket using oak and mounted it as high as possible (Cathedral Ceiling at the top of the third floor). The only part that might present a challenge is how you attach the 75 ohm cable to the back of the Sansui. I will modify mine by adding a RG59 recepticle.
Good luck and enjoy the waves, FM that is!
Regards//Keith
How's that for a curveball?
I recently picked up a TU717 from eBay. I have a Creek T-40 and it was expensive and good in the early 90s.
However, the Sansui is completely on another level.
One thing I can tell you is that the better the antenna, the more you will enjoy this unit. A quality antenna that is mounted high and outside will put rabbit ears to shame. So even though we weren't able to help you, something good can come from this thread. There is so much more you can get from a great tuner with a great antenna, so why not. Also research fmtunerinfo.com, they have antenna info, links and a list of Mods for the TU717.
I use a Magnum Dynalab ST-2 (small and powerful) because the townhouse that I live in won't let you mount anything outside. I made a nice bracket using oak and mounted it as high as possible (Cathedral Ceiling at the top of the third floor). The only part that might present a challenge is how you attach the 75 ohm cable to the back of the Sansui. I will modify mine by adding a RG59 recepticle.
Good luck and enjoy the waves, FM that is!
Regards//Keith
Sheldon the phone calls that the radio station is getting is astounding, they said they are looking into that matter.
Keith, magnum Dynalab is not that far from me, I am thing of getting ST-2 antenna as well,
I would definitely like to see the way you connect it, on the back of the unit.
With pics and all, send to slate@rogers.com
Great stuff guys
Thanks for all the advice.
I think I am going to put some black Gate Capacitors in the audio path of the Sansui Tu-717.
Keith, magnum Dynalab is not that far from me, I am thing of getting ST-2 antenna as well,
I would definitely like to see the way you connect it, on the back of the unit.
With pics and all, send to slate@rogers.com
Great stuff guys
Thanks for all the advice.
I think I am going to put some black Gate Capacitors in the audio path of the Sansui Tu-717.
Hi Slate,
The ST-2 is very good. But my favorite station is WFUV at 90.7 here in NY and I am no further than 30 miles from it. For some reason, I get it clear and strong most places I drive within 60- 70 miles of their transmitter until I get home (the signal degrades). Then I go upstairs and turn it on with my Sansui and ST-2 (up 30 feet higher than my car) and it still has prominent background white noise (hiss). Something must be affecting the path between my place and the transmitter.
I don't know if a better antenna might help but as I said before I am confined to an indoor antenna. You didn't say whether you were going to install it inside or outside. But if indoors is your choice, also look into this one: http://www.antennaperformance.com/ They sell an antenna called the "intenna" and make some claims that they are better (Just like Magnum Dynalab did). The intenna is twice as much, but if it would bring in WFUV clearly, I would have spent it!
I am not saying the ST-2 is doing anything wrong, just that I have a problem it cant overcome. It certainly out performs a 300 ohm wire dipole antenna by a decent maigin! Maybe if I was able to mount it outside and at the highest point of the Townhouses, I wouldn't be writing this either!
Just do the research before you spend your money!
As soon as I can borrow a digital camera, I will take pictires of what I did with the antenna and how I temporarily hooked it up to the back of the tuner! Maybe by then I will have installed a RG59 coax connector in place of the setscrew and grounding strap.
Also, in some instances, there are better choices than Blackgates so look into that a little more too! They might cost more but the TU717 is worth it. I always try to do it right the first time although it hasn't always turned out that way!
Regards//Keith
The ST-2 is very good. But my favorite station is WFUV at 90.7 here in NY and I am no further than 30 miles from it. For some reason, I get it clear and strong most places I drive within 60- 70 miles of their transmitter until I get home (the signal degrades). Then I go upstairs and turn it on with my Sansui and ST-2 (up 30 feet higher than my car) and it still has prominent background white noise (hiss). Something must be affecting the path between my place and the transmitter.
I don't know if a better antenna might help but as I said before I am confined to an indoor antenna. You didn't say whether you were going to install it inside or outside. But if indoors is your choice, also look into this one: http://www.antennaperformance.com/ They sell an antenna called the "intenna" and make some claims that they are better (Just like Magnum Dynalab did). The intenna is twice as much, but if it would bring in WFUV clearly, I would have spent it!
I am not saying the ST-2 is doing anything wrong, just that I have a problem it cant overcome. It certainly out performs a 300 ohm wire dipole antenna by a decent maigin! Maybe if I was able to mount it outside and at the highest point of the Townhouses, I wouldn't be writing this either!
Just do the research before you spend your money!
As soon as I can borrow a digital camera, I will take pictires of what I did with the antenna and how I temporarily hooked it up to the back of the tuner! Maybe by then I will have installed a RG59 coax connector in place of the setscrew and grounding strap.
Also, in some instances, there are better choices than Blackgates so look into that a little more too! They might cost more but the TU717 is worth it. I always try to do it right the first time although it hasn't always turned out that way!
Regards//Keith
Serratoga;
There is a DIY design which I got off the 'net
I saved it so I do not recall where it comes from.
It works very well. It's a square loop of wire 30 inc by 30inch with a smaller square loop inside
Send me your email and I can send you the stuff
I can't attach the figures to this msg.
The length of the side of the antenna is x and y is the length of the rod you need to make the correct size of square.
frequency band x 1/2 x y
88 - 92 MHz
Non-commercial band 832 mm
32.8 inch 416 mm
16.4 inch 1178 mm
46.4 inch
88 - 108 MHz
Full FM band 760 mm
30.0 inch 380 mm
15.0 inch 1075 mm
42.4 inch
There is a DIY design which I got off the 'net
I saved it so I do not recall where it comes from.
It works very well. It's a square loop of wire 30 inc by 30inch with a smaller square loop inside
Send me your email and I can send you the stuff
I can't attach the figures to this msg.
The length of the side of the antenna is x and y is the length of the rod you need to make the correct size of square.
frequency band x 1/2 x y
88 - 92 MHz
Non-commercial band 832 mm
32.8 inch 416 mm
16.4 inch 1178 mm
46.4 inch
88 - 108 MHz
Full FM band 760 mm
30.0 inch 380 mm
15.0 inch 1075 mm
42.4 inch
Hey Sheldon,
Is this what you are referring to: http://www.wryr.org/Antenna_instructions.pdf
Also read this thread from here it is informative and shows some of the Gamut of choices: http://www.diyaudio.com/forums/showthread.php?threadid=58754
Happy reading and like I said, Research and make informed decisions. There are lots of options!
Regards//Keith
Is this what you are referring to: http://www.wryr.org/Antenna_instructions.pdf
Also read this thread from here it is informative and shows some of the Gamut of choices: http://www.diyaudio.com/forums/showthread.php?threadid=58754
Happy reading and like I said, Research and make informed decisions. There are lots of options!
Regards//Keith
Yes thanks, that is the one I built it and it is really very good
many times better than simple dipole.
The sketch is hard to understand but the gif file showing rotation helps to see how to make it.
many times better than simple dipole.
The sketch is hard to understand but the gif file showing rotation helps to see how to make it.
Keith Thank you.
Some intersting material.
I have buit a jpole but not for my present situation.
They also work but are non directional.so depending on your room and location they may work out well. You would never have to move it and it looks like a scuplture. If you build one use 3/4
copper pipe instead of the 1/2 inch for less loss.
Some of the mods are interesting, I did not think of the balun just inside the tuner.
Some intersting material.
I have buit a jpole but not for my present situation.
They also work but are non directional.so depending on your room and location they may work out well. You would never have to move it and it looks like a scuplture. If you build one use 3/4
copper pipe instead of the 1/2 inch for less loss.
Some of the mods are interesting, I did not think of the balun just inside the tuner.
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