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I hear audio in the speaker when transmitting

1TW810
 

No, the radio is original, no mods.
no, the radio is original, no modifications. I was wondering what should I check regarding the TR relay


On Sat, Jan 7, 2023 at 12:26 AM, Brian (N2MLP) wrote:
Has this radio been modified 
That is no welds
 
Check that the circuit is blocking the rec.
On transmitting 

 

On Jan 6, 2023, at 5:49 PM, marco.lafranca@... wrote:

Hi guys, thank you all for your replies.

@Hugh: My radio is a 706mkiig, it shouldn't have the monitor functionality.

@davebb: I haven't tried the data socket yet. Now I also write in the other forum.

@Brian, @davebb
Regarding the T/R relay (RL1 on the filter board?), what kind of checks should I do on the circuit? do you check the welds? check its driver Q1? or other? thank you

@Rick Robinson: I've already done some checks on the screws, masses and cables. Which card in particular should I check?
Brian (N2MLP)
 

If the circuit is working correctly 


On Jan 7, 2023, at 4:50 PM, marco.lafranca@... wrote:

No, the radio is original, no mods.
no, the radio is original, no modifications. I was wondering what should I check regarding the TR relay

On Sat, Jan 7, 2023 at 12:26 AM, Brian (N2MLP) wrote:
Has this radio been modified 
That is no welds
 
Check that the circuit is blocking the rec.
On transmitting 

 

On Jan 6, 2023, at 5:49 PM, marco.lafranca@... wrote:

Hi guys, thank you all for your replies.

@Hugh: My radio is a 706mkiig, it shouldn't have the monitor functionality.

@davebb: I haven't tried the data socket yet. Now I also write in the other forum.

@Brian, @davebb
Regarding the T/R relay (RL1 on the filter board?), what kind of checks should I do on the circuit? do you check the welds? check its driver Q1? or other? thank you

@Rick Robinson: I've already done some checks on the screws, masses and cables. Which card in particular should I check?
Geoff
 

The mic lead had a open shield at its connector, so fault was the in the mic lead not the radio.


On Sun, 8 Jan 2023, 08:39 , <marco.lafranca@...> wrote:
Hi Jeff,
i'm using the original ic706 mic, i haven't tried another mic. I tried plugging it into the back connector as well but it's the same. Was your problem inside the microphone or on the connector? thanks

On Sat, Jan 7, 2023 at 10:11 PM, Geoff wrote:
Have you tried another mic?

I've had rf getting into a mic during Tx due to a bad shielding connection.

Geoff
1TW810
 
Edited

Hi, I checked the voltage on the accessory molex(4pin tuner) , on the back of the radio, and noticed a difference between reception and transmission of 1 volt. Trying at max power in FM the voltage passes from 13.72 (RX) to 12.70 (TX). It's to normal 1v drop? Thank you

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