[TenTec] Fw: Need Caps for Titan II Please

[Robert Mcgraw]

BINGO on difference!  Do check the RF current rating for the caps of
choice.  It is not the voltage that frys them, it is the heating from RF
current that makes them go pop!  At legal limit power into 50 ohms
resistive one has less than 500 volts at the output.


73
Bob, K4TAX




> Theirs is a lot difference  in a ceramic cap that a door knob cap.
>
> -----Original Message-----
> From: Jerry Haigwood
> Sent: Thursday, April 11, 2013 5:17 PM
> To: 'Discussion of Ten-Tec Equipment'
> Subject: Re: [TenTec] Fw: Need Caps for Titan II Please
>
> Mouser.com will have them a lot cheaper!  A 330pF ceramic cap at 6KV only
> costs 73 cents!
> Jerry W5JH
> "building something without experimenting is just solder practice"
>
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of
> k3miy at csonline.net
> Sent: Thursday, April 11, 2013 11:54 AM
> To: Discussion of Ten-Tec Equipment
> Subject: Re: [TenTec] Fw: Need Caps for Titan II Please
>
> Bob and others
>
> On pg 43 of the latest RF Parts catalog, there are 300 PF\7.5KV caps for
> less than 20 bucks.
>
> ron
> K3MIY
>
> Quoting Cecil <chacuff at cableone.net>:
>
>> I would start at RF parts...
>>
>> They normally keep a decent supply...
>>
>> Cecil
>> K5DL
>>
>> Sent from my iPad
>>
>> On Apr 11, 2013, at 9:53 AM, "Bob Good" <k4bg at planters.net> wrote:
>>
>> >
>> >
>> > From: Bob Good
>> > Sent: Tuesday, April 09, 2013 15:26
>> > To: Tentec at contesting.com ; Amp Reflector
>> > Subject: Need Caps for Titan II Please
>> >
>> > I own a T-T Model 416 Titan II Amp and having a problem.  It started
>> > with
>> an burning arc located at the bottom of the 160 / 80 Meter coil at the
>> junction of the 1/4 inch tubing coil.  It carboned the bottom of the
>> coil form.  I removed the one chassis  mount and reconnected the two
>> coils soldering the junction.  I have not a clue as to what caused the
> problem.
>> All functional parameters seemed fine.  HV without RF drive, no arc.
>> start applying power and buzzzzz and stinky smoke.  In the process of
>> my clumsy attempt at repair I assume I moved two of the ceramic
>> loading caps to where they arced to the screw post on the tuning
>> variable cap resulting in another stinky arc which apparently cooked
>> the caps.  When I cleared the caps by folding them back towards the PC
> board, I have no arc but no output either.
>> I hope the only damage is the two caps which are C-6 and C-8 on the
>> Load capacitor shunt board each 320 pf.  A call to Paul at T-T produced
>> no
> joy.
>> They do not have the c
>>  ap
>> > s.  Therefore....  does anyone have a couple of suitable caps I
>> > might
>> purchase or information as to where to go to find them?  Any
>> additional comments would also be much appreciated.  Thanks for reading
> and your help.
>> (All info correct on QRZ)  Regards,  Bob K4BG.
>> > _______________________________________________
>> > TenTec mailing list
>> > TenTec at contesting.com
>> > http://lists.contesting.com/mailman/listinfo/tentec
>> _______________________________________________
>> TenTec mailing list
>> TenTec at contesting.com
>> http://lists.contesting.com/mailman/listinfo/tentec
>>
>>
>
>
>
>
> -------------------------------------------------------------------
> This mail sent through CSOnline Webmail http://webmail.csonline.net
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
> _______________________________________________
> TenTec mailing list
> TenTec at contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>