3900 Drifting problem

[KD5VHF]

From what I've heard from everyone I know who has ever had a 3900.....If you attach a sail on top and styrofoam to the bottom it makes a nice sail boat for that small pond you come across every now and then since it is sooooo good at drifting.<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> I guess you could make a TCXO for it but I'm not sure it would be worth it. It might be a fun project though.<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/wink.gif ALT="">


<hr />73, Mike

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[KD5VHF]

From what I've heard from everyone I know who has ever had a 3900.....If you attach a sail on top and styrofoam to the bottom it makes a nice sail boat for that small pond you come across every now and then since it is sooooo good at drifting.<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/laugh.gif ALT=":lol"> I guess you could make a TCXO for it but I'm not sure it would be worth it. It might be a fun project though.<img src=http://www.ezboard.com/intl/aenglish/images/emoticons/wink.gif ALT="">


<hr />73, Mike

</p>

 

[KD5VHF]

<blockquote>Quote:<hr>It was also suggested to fill the area with variactor with parifin wax to shield it from the air.<hr></blockquote> I've seen this suggestion (wax, Styrofoam etc.)on quite a few rigs. I've also heard it may cause problems down the road by holding in heat and causing premature failure.


<hr />73, Mike

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[KD5VHF]

<blockquote>Quote:<hr>It was also suggested to fill the area with variactor with parifin wax to shield it from the air.<hr></blockquote> I've seen this suggestion (wax, Styrofoam etc.)on quite a few rigs. I've also heard it may cause problems down the road by holding in heat and causing premature failure.


<hr />73, Mike

</p>

 

[JustinDePolis2]

How far does it "drift"?


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</p>

 

[JustinDePolis2]

How far does it "drift"?


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</p>

 

[JustinDePolis2]

Possibly weak or drifting crystal, I would check all oscillators to narrow it down to which one is moving, and then you know where the problem lies.


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</p>

 

[JustinDePolis2]

Possibly weak or drifting crystal, I would check all oscillators to narrow it down to which one is moving, and then you know where the problem lies.


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</p>

 

[jonbah]

My 3900 has a problem with drifting on SSB The freq. changes with temperature I have to chase all the time. The fine tune is opened.

Anyone know any tricks to fix this maybe a different variactor or a bad cap. ???



Thanks

Jonbah


CDX-3030

PA-125

OT-125</p>

 

[jonbah]

My 3900 has a problem with drifting on SSB The freq. changes with temperature I have to chase all the time. The fine tune is opened.

Anyone know any tricks to fix this maybe a different variactor or a bad cap. ???



Thanks

Jonbah


CDX-3030

PA-125

OT-125</p>