>
>
>
>On Thu, 11 Feb 1999 12:16:28 -0800 Rich Measures <measures@vc.net>
>writes:
>>
>>>On Thu, 11 Feb 1999 11:14:47 +0100 Carsten Esch
>>><carsten.esch@olympus-software.com> writes:
>>>>
>>>>Anyone with comments on the above mentioned inductor? How would this
>>>>thing work in a
>>>>
>>>>a. 3CX1500A7 amp
>>>>b. 3CX3000A7 amp
>>>>
>>>>covering 160-10m ? Or should I wound again my own coil?
>>>
>>>
>>>It sounds great but the proof is when it is used and survives several
>>>years of tuning.
>>
>>Ä amen.
>>
>>>It also seems a bit of an overkill for an 8877.
>>
>>Ä How could we possiblly know this if the dimension of the ribbon
>>was
>>not given? The tank circulating-current in an 8877 amplifier can
>>easily be 13A-rms. E>F. Johnson rated their 12.7mm/0.5" ribbon inductors
>>(222-series) at 15A.
>
>Gee, your getting touchy. I said "seems" and that was based upon the
>dimensions. A coil that you can stick the tube inside with room to spare
>just appears a bit excessive.
>
>
>>
>>>Many have reported problems with arcing and parasitics when a roller
>>coil is used, particularly the large edgewound Multronics style.
>>
>>Ä I used such an inductor in my 8171 amplifier. I shorted the
>>unused turns with 5/8" strap. There was no arcing at the inductor.
However,
>>there was initially an, intermittent vhf parasite. The cure was to
>>use a lower vhf-Q anode parasitic-suppressor.
>
>
>And how many years have you used the coil? How many bands? Hours of
>operation daily and number of retunes per day? Or does it just stay on
>75M ?
>
? [chortle]
>>>
>>>Any idea who actually manufacturers the coil? I hope it is not a
>>certain West Coast outfit.
>>
>>Ä Are you thinking about the mfg. that uses Delrin for coil forms in
>>roller coils.?
>>
>
>They are in Ohio. The other operation is in your state but the quality is
>similar.
>
? ok. A roller-coil mfg. in the land of fruits and nuts?. . Hmm. .
Who is it? We still don't know the dimensions of the ribbon.
>
>>>What is the price?
>>>
>>Ä Surplus Sales sells the 5.uH Collins 180t roller-L for $35. Fair
>>Radio sells the same item for $10.
>
>
>I think you slipped a few gears Rich.
? Are those not the prices, Carl? . Have you ever compared Nebraska
Surplus' prices on ceramic transmitting capacitors with the prices at
Fair Radio?
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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