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Yak-18T Radio Static

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pjashura

Joined: 19 May 2014
Posts: 15
Location: Elbert, CO

Posted: Mon May 19, 2014 9:30 am Post subject: Yak-18T Radio Static

I have constant static on the Russian Radio.  When receiving a transmission there is no static, but when listening on a frequency that is not transmitting

at the time it is constant, not from the intercom but the radio.  I cannot find 

a squelch adjustment on the intercom panel or on the radio itself.



Any ideas?  Thanks for any help, it has been this way forever.



PJ Ashura

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PJ Ashura

PS

Joined: 08 Sep 2006
Posts: 84
Location: Texas

Posted: Mon May 19, 2014 11:42 am Post subject: Yak-18T Radio Static

Did you try flipping the 2 position squelch switch on the radio head? 

 

  Phil

 

 

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Phil

pjashura

Joined: 19 May 2014
Posts: 15
Location: Elbert, CO

Posted: Mon May 19, 2014 11:51 am Post subject: Yak-18T Radio Static

The two position switch only turns the radio on or off. 



Sent from my iPhone



On May 19, 2014, at 13:42, Phillip Salter <psalter(at)aol.com (psalter(at)aol.com)> wrote:

[quote]Did you try flipping the 2 position squelch switch on the radio head? 

 

  Phil

 

 

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PJ Ashura

PS

Joined: 08 Sep 2006
Posts: 84
Location: Texas

Posted: Mon May 19, 2014 12:52 pm Post subject: Yak-18T Radio Static

No,  the bottom right switch is squelch, either off or on.  

 

  Phil

 

 

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Phil

mikecavanagh1(at)hotmail.
Guest

Posted: Mon May 19, 2014 1:49 pm Post subject: Yak-18T Radio Static

Your radio may different than mine.  My YAK 52 radio has two freq. knobs, a volume control and a small silver vertical switch next to the volume control for squelch.  Could your two position switch in fact be the squelch switch but only works with the squelch off.  The  normal position for  my squelch switch is UP.  Down position results in the un-squelched static you describe.  Good Luck.

On May 19, 2014, at 2:50 PM, Patrick Ashura <pjsales(at)me.com (pjsales(at)me.com)> wrote:

[quote]The two position switch only turns the radio on or off. 



Sent from my iPhone



On May 19, 2014, at 13:42, Phillip Salter <psalter(at)aol.com (psalter(at)aol.com)> wrote:

[quote]Did you try flipping the 2 position squelch switch on the radio head? 

 

  Phil

 

 

  --

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mark.bitterlich(at)navy.m
Guest

Posted: Mon May 19, 2014 3:13 pm Post subject: Yak-18T Radio Static

I forget which radio the 18T has.   I think it is the Balkan 25.  Would you let me know please?   Is the radio a big silver box located in some rack in the aircraft someplace with a remote control head (as in the YAK-52), or do you have the single long box where the radio itself is right behind the control head?



If it is the one like is in the YAK-52, then find the radio itself and there will be two external adjustment rheostats that can be adjusted with a common screw driver.   Take a magic marker and carefully mark the radio so as to show where they are presently adjusted to.   This ... so that you can put them back to exactly where they are NOW after you mess with them.



One of these adjustments controls the transmit modulation level.   The OTHER one controls the Squelch.



Of course you also have to have the squelch SWITCH turned to the proper position in the cockpit.



Turn each adjustment, one at a time fully CLOCKWISE.   ONE of them will control the squelch.  You have a 50 50 change of getting it right on the first try.   If you pick the wrong one, put it back to exactly where it was before using the marks you put on there with your magic marker.   The other one you want to adjust to where the noise JUST STOPS and then just a tiny bit more.



Good luck.



If neither one works..... you probably have a wiring problem.



Mark



p.s.  If you have the radio that is "all in one", as in a control head that is attached to a long rectangular box that you slide out of a rack, with the antenna coax in the rear along with a DB-25 like connector, the squelch adjustment is INSIDE of the radio, and is not something I can describe over email.  In those radios, you have to fire them up outside of the aircraft with the cover off and adjust the squelch.  Not very easy to do.  This radio is the same as is in the YAK-50, and a lot of Sukhoi models.



________________________________

From: owner-yak-list-server(at)matronics.com [owner-yak-list-server(at)matronics.com] on behalf of Michael B. Cavanagh [mikecavanagh1(at)hotmail.com]

Sent: Monday, May 19, 2014 5:48 PM

To: yak-list(at)matronics.com

Subject: Re: Yak-18T Radio Static



Your radio may different than mine.  My YAK 52 radio has two freq. knobs, a volume control and a small silver vertical switch next to the volume control for squelch.  Could your two position switch in fact be the squelch switch but only works with the squelch off.  The  normal position for  my squelch switch is UP.  Down position results in the un-squelched static you describe.  Good Luck.

On May 19, 2014, at 2:50 PM, Patrick Ashura <pjsales(at)me.com<mailto:pjsales(at)me.com>> wrote:



The two position switch only turns the radio on or off.



Sent from my iPhone



On May 19, 2014, at 13:42, Phillip Salter <psalter(at)aol.com<mailto:psalter(at)aol.com>> wrote:



Did you try flipping the 2 position squelch switch on the radio head?



Phil

--

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pjashura

Joined: 19 May 2014
Posts: 15
Location: Elbert, CO

Posted: Mon May 19, 2014 3:53 pm Post subject: Yak-18T Radio Static

Mark- thanks for the help. The actual radio is a long black box on a shelf behind the hat rack and it does have the two adjustment screws you describe. They are both at about mid range and neither has any effect on the static but I'm going to try moving them with the fwd toggle switches in different positions. 

We shall see. 



PJ

Sent from my iPhone



[quote] On May 19, 2014, at 17:12, "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich(at)navy.mil> wrote:

 

 

 

 I forget which radio the 18T has.   I think it is the Balkan 25.  Would you let me know please?   Is the radio a big silver box located in some rack in the aircraft someplace with a remote control head (as in the YAK-52), or do you have the single long box where the radio itself is right behind the control head?

 

 

 

 If it is the one like is in the YAK-52, then find the radio itself and there will be two external adjustment rheostats that can be adjusted with a common screw driver.   Take a magic marker and carefully mark the radio so as to show where they are presently adjusted to.   This ... so that you can put them back to exactly where they are NOW after you mess with them.

 

 

 

 One of these adjustments controls the transmit modulation level.   The OTHER one controls the Squelch.

 

 

 

 Of course you also have to have the squelch SWITCH turned to the proper position in the cockpit.

 

 

 

 Turn each adjustment, one at a time fully CLOCKWISE.   ONE of them will control the squelch.  You have a 50 50 change of getting it right on the first try.   If you pick the wrong one, put it back to exactly where it was before using the marks you put on there with your magic marker.   The other one you want to adjust to where the noise JUST STOPS and then just a tiny bit more.

 

 

 

 Good luck.

 

 

 

 If neither one works..... you probably have a wiring problem.

 

 

 

 Mark

 

 

 

 p.s.  If you have the radio that is "all in one", as in a control head that is attached to a long rectangular box that you slide out of a rack, with the antenna coax in the rear along with a DB-25 like connector, the squelch adjustment is INSIDE of the radio, and is not something I can describe over email.  In those radios, you have to fire them up outside of the aircraft with the cover off and adjust the squelch.  Not very easy to do.  This radio is the same as is in the YAK-50, and a lot of Sukhoi models.

 

 

 

 ________________________________

 From: owner-yak-list-server(at)matronics.com [owner-yak-list-server(at)matronics.com] on behalf of Michael B. Cavanagh [mikecavanagh1(at)hotmail.com]

 Sent: Monday, May 19, 2014 5:48 PM

 To: yak-list(at)matronics.com

 Subject: Re: Yak-18T Radio Static

 

 Your radio may different than mine.  My YAK 52 radio has two freq. knobs, a volume control and a small silver vertical switch next to the volume control for squelch.  Could your two position switch in fact be the squelch switch but only works with the squelch off.  The  normal position for  my squelch switch is UP.  Down position results in the un-squelched static you describe.  Good Luck.

 On May 19, 2014, at 2:50 PM, Patrick Ashura <pjsales(at)me.com<mailto:pjsales(at)me.com>> wrote:

 

 The two position switch only turns the radio on or off.

 

 Sent from my iPhone

 

 On May 19, 2014, at 13:42, Phillip Salter <psalter(at)aol.com<mailto:psalter(at)aol.com>> wrote:

 

 Did you try flipping the 2 position squelch switch on the radio head?

 

 Phil

 

 

 --

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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_________________
PJ Ashura

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