Tony,
Thanks as mine is a little different than this one (1973 version), as yours
shows the driving power. The one in my manual does not. The link was from
another poster on here, I was merely referencing it. I wondered why it only
showed class B. The one in my manual doesn't mention class B at all.
Best,
Will
*********** REPLY SEPARATOR ***********
On 6/27/06 at 7:26 PM Tony King wrote:
>Will,
>
>The PDF that you sent the link for is a 1968 revision. The attached
>sheet is a 1980 revision. They're different.
>
>73, Tony W4ZT
>
>Will Matney wrote:
>> Ok,
>>
>> I went and pulled my Eimac book down. I hadn't earlier where it was at
>as I couldn't hardly reach it from my wheelchair.
>> I guess I need shorter book shelves : ) Anyhow, this one does have the
>Class AB2 listed as below from page 2. Strangely, this one does not
>mention class B like the pdf did.
>>
>> Quote;
>>
>> Radio frequency Linear Amplifier
>> Cathode driven
>> Class AB2
>>
>> Maximum Ratings:
>>
>> DC plate voltage 4000 Vdc
>> DC plate current 0.4 ampere
>> Plate dissapation 500 watts
>> Grid dissapation 20 watts
>>
>> Typical operation (Frequencies to 110 MHz)
>> Class AB2, peak envelope or modulation crest conditions
>>
>>>> (Here I'm going to show the maximum plate voltage they show of 3500
>Vdc)
>>
>> Plate voltage 3500 Vdc
>> Cathode voltage +15 (+10 at 3000 and 0 at 2500)
>> Zero signal plate current 53 mA
>> Single-tone plate current, CW 3/4 400 mA
>> Two-tone plate current 262 mA
>> Single-tone grid current 108 mA
>> Two-tone grid current 58 mA
>> Single-tone power input 1400 W
>> Useful output power, CW or PEP 890 W
>> Resonant load impedance 5000 ohms
>> Intermodulation distortion products;
>> 3rd order -40 dB
>> 5th order -45 dB
>>
>> Single-tone current for 3500 Vdc operation may reach this value during
>short periods of circuit adjustment only.
>>
>> IMD products are referenced against one tone of a two equal tone signal.
>>
>> Currents listed corrospond to SSB, or "two-tone" average current at peak
>of signal envelope.
>>
>> End Quote.
>>
>> Best,
>>
>> Will
>>
>>
>>
>> *********** REPLY SEPARATOR ***********
>>
>> On 6/27/06 at 1:31 PM R L Measures wrote:
>>
>>> On Jun 27, 2006, at 6:51 AM, Will Matney wrote:
>>>
>>>> Rich,
>>>>
>>>> It was the same thing as they printed it I was refering, or to me
>>>> it was as I wrote it. It was Eimacs maximum rating at 1 KW input, G-
>>>> G, class B RF amp showing it's minimum distortion, or the way they
>>>> have it listed.
>>> I have seen no info from Eimac on Class B for the 3-500Z.
>>>> Best,
>>>>
>>>> Will
>>>>
>>>> *********** REPLY SEPARATOR ***********
>>>>
>>>> On 6/27/06 at 6:19 AM R L Measures wrote:
>>>>
>>>>> On Jun 27, 2006, at 2:46 AM, Tom W8JI wrote:
>>>>>
>>>>>>> They can be used on up in current, say for pulse circuits
>>>>>>> and RF heating. The 400 mA is the maximum plate current at
>>>>>>> single tone for minimum distortion. That's for 600 watts
>>>>>>> PEP useful power each. That's listed in the tables on page
>>>>>>> 2 or 3 under a class B RF amp.
>>>>>> Will,
>>>>>>
>>>>>> Where did you get the idea 400mA is a "minimum distortion"
>>>>>> condition?
>>>>> Good point, Tom. Will should have said something like: for minimal
>>>>> distortion, the max rated anode-I is 400mA.
>>>>>> 73 Tom
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Amps mailing list
>>>>>> Amps@contesting.com
>>>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>>>
>>>>> R L MEASURES, AG6K. 805-386-3734
>>>>> r@somis.org
>>>>
>>>>
>>>> _______________________________________________
>>>> Amps mailing list
>>>> Amps@contesting.com
>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>>
>>> R L MEASURES, AG6K. 805-386-3734
>>> r@somis.org
>>
>>
>>
>> _______________________________________________
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>>
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