[GreenKeys] 28V MITE Myth or Real ?

Fri Apr 21 10:13:34 EDT 2023

What kind of motor is the DC 28 Volt variant in a MITE ??? I've got one 
of this DC MITEs and two AC 115 Volts / 400Hz machines...

Olaf  -  DL8OBH - AF0A

Am 21.04.2023 um 14:27 schrieb Bruce Gentry via GreenKeys:
>
> The outer part of the rotor in a Mite motor is hard steel. The motor 
> is capacitor start and run two pole, and is wound to bring everything 
> close to saturation. It starts as an induction motor, and as it 
> approaches synchronism the rotor becomes magnetized and locks in to 
> synchronous speed. Motors of this design run hot and are of poor 
> efficiency.
>
>     Bruce Gentry, KA2IVY
>
> On 4/21/23 7:47, Olaf Möller wrote:
>>
>> I suspect the synchronous motors of the AC-variants MITEs have rotors 
>> with a combination of permanent magnet excitation and a self-exciting 
>> ferrite ring to minimize the risk of "tipping".
>>
>> Olaf  -  DL8OBH - AF0A
>>
>>
>>
>> Am 21.04.2023 um 11:26 schrieb Henning Treumann via GreenKeys:
>>> I have to correct. The prototype version is 115V BUT 50 Hz.
>>>
>>> Henning DF3OE
>>>
>>> Am Fr., 21. Apr. 2023 um 11:16 Uhr schrieb Henning Treumann
>>> <df3oe.henning at googlemail.com>:
>>>> I have got MITEs in all versions in my collection.
>>>>
>>>> 115V 400HZ, 28V DC and also a prototype version 220V AC 50Hz intended
>>>> to sell to German Army (Bundeswehr),
>>>> but it never came to a contract.
>>>>
>>>> 73
>>>> Henning DF3OE
>>>> www.teleprinter.net
>>>> www.i-telex.net
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Am Fr., 21. Apr. 2023 um 08:20 Uhr schrieb MilComm Guy 
>>>> <m38inmaine at gmail.com>:
>>>>> I feel very lucky to have a working MITE and even more to have a 
>>>>> 60cycle unit thanks to a GreenKeys lead.  My ultimate goal is to 
>>>>> have it mated up to my PRC-47 and operating in the field, I still 
>>>>> need to find the CV-2455 converter to complete the project, I'm 
>>>>> currently running it from the GRC-106/MD-522 combination.
>>>>>
>>>>>    I have read(not official) on two occasions that there is a 28V 
>>>>> version of the MITE, the manual states availability of two AC 
>>>>> motors 60 or 400 cycle, it makes no mention of a DC version, the 
>>>>> manual is dated 4/1966.
>>>>>
>>>>> I would like to ask if any one has actual hands on experience or 
>>>>> documentation or pictures of a 28V MITE.  I also would like to 
>>>>> thank all of you for making this list a great resource for all 
>>>>> things Green Keys.
>>>>>
>>>>> 73
>>>>> Mark
>>>>> K1HF
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>>
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