[Yaesu] From CO8LY

[hwhall at compuserve.com]

Does it sound like he also replaced the coil ("reel" or "bobine") and that is what's getting hot? Is it possible the new coil's wire is too small?  I don't have a FL2100B, so I'm not as well informed on the possibilities.
 

 Wayne
WB4OGM

 

-----Original Message-----
From: Dr. Gerald N. Johnson <geraldj at netins.net>
To: yaesu <yaesu at mailman.qth.net>
Sent: Sat, May 7, 2016 5:48 pm
Subject: Re: [Yaesu] From CO8LY

Your new capacitors sound like they are general purpose ceramics and 
aren't big enough to carry the RF current in the PA cathode and are very 
temperature sensitive. You need ceramic with temperature characteristic 
NPO and with a 3/4" or larger diameter with heavy wire leads to carry 
several amps of RF current.

73, Jerry, K0CQ

On 5/7/2016 7:40 AM, co8ly wrote:
> Dear friends
> I have a Lineal Yaesu FL2100B that doesn't have the bands
> of 30,17 and 12m.
>
> I have changed the entrance circuit for 15mtrs and him
> transform for 17mtrs, change him the two condensers
> and the reel  says the diagram of the FL2100Z.
>
> All this well the SWR is of 1:2 in the entrance of 17mtrs but
> when some minutes it passes the reel (bobine) (17mtrs) of entrance circuit
>   of it begins to heat and the SWR varies up to 1:4.
>
> I need to know because warms the reel of input of 17m of the
> lineal ampl, in other bands doesn't happen.
>
> I wait ur opinion, a million thank you in advance.
>
> Best 73.- Eduardo CO8LY
>
>
>
>
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