[AMPS] looking for heathkit SB1000 RFC-1 !!

Tue, 18 May 1999 13:48:16 EDT

On 13.05.99  14:14:53, N4ZR wrote:

>><< At 04:10 PM 5/12/1999 EDT, you wrote:
>> >
>> >hi all,
>> >
>> >WPXCW is approaching and there is one task I nearly forgot: to repair my 
>> >SB1000 after last year's CQWW. As far as I located it, the breakdown is a 
>> >blown RFC-1 (2.5mH RFC choke). Can anybody help with info on where to 
>>get
>> one 
>> >(adress, website, tel.nr, preferably in EUROPE)? Any hints what else might
>> be 
>> >blown?
>> >Please reply to me directly. Thanks!
>>

>> Is this one in series with the +B and before the base of the big plate 
RFC?  
>> 73,  Pete N4ZR >>

Hello Pete,

thanks for reply. No, this is a small RFC and it is somewhere else. I do not 
have it here now but it is a cylinder about 4cm long and maybe 2cm in 
diameter (thats 1.5 inch x 1 inch, and only raw guessing). It is wound with 
very thin wire and not wound as one long winding but the windings are 
separated in (maybe 4 or 5) "blocks of windings". The blocks are all equal 
and are equally spaced. More description tomorrow when I will be at my 
station.
The RF is taken from the hot point of the LOAD capacitor, fed thru L9 and 
enters the coax cable leading to the relay circuit (or QSK circuit, in my 
case). RFC-1 goes to ground from this point (where the RF enters the coax). 
It probably is against HV accidentally crossing the coupling capacitor and 
appearing on the antenna jack...?? Or is it to ground any occuring 
instabilities?
I am posting this to the group again as I had no other replay and the 
sparepart seems not easy to get. Maybe somebody can help. 
Can't I just use any coil which has appropriate Henrys for this job or does 
it have to be the correct sparepart (same windings, same blocks of 
windings...?)

73 Con DF4SA

--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm