[GreenKeys] Press frequencies

[John Vendely]

Yes, these are 1/4" 4-channel and 8-channel instrumentation recorders, 
with most recordings made at the non-standard tape speed of 15/32 ips, 
with a non-standard equalization curve.  For the FAX recordings, one 
track contains a tape transport servo reference signal which is fed back 
to the transport capstan servo during playback.  This feedback mechanism 
is necessary to prevent picture skew.  It is very unlikely they would 
have compatible equipment, but if they do, I could provide tapes...

73,

John K9WT

On 6/3/2022 1:55 PM, Duncan Brown wrote:
> John,
>
> The AWA Museum Audio Department has working tape machines and 
> regularly digitizes old tapes.  Let me check and see if they are 
> interested.
>
> You mentioned "reels of low speed multichannel logging recorder 
> tapes"  Are these special "logging" tapes with more than 4 tracks (two 
> in each direction) per tape?
>
> Thanks,
>
> Duncan Brown, K2OEQ
> USASA    31J30
>
> Antique Wireless Assoc. Museum,
>   Asst. Curator, Commercial Equipment
> (also chief TTY op & repairman)
>
> www.antiquewireless.org
>
>
> On 03-Jun-22 10:27, John Vendely wrote:
>> I still have the mag tape machines, though they all need service--the 
>> pinch rollers have turned to mush and need to be "re-tired". Probably 
>> other electronic problems will have crept in as well.  My time is 
>> limited, but I could eventually digitize selected recordings and make 
>> them available if anyone has the server space to host them--and if 
>> there is any real interest...
>>
>> 73,
>>
>> John K9WT
>>
>> On 6/2/2022 7:31 PM, Harold Hallikainen via GreenKeys wrote:
>>> It would be great if those low speed audio tapes were digitized 
>>> (perhaps 8
>>> kHz sample rate, 8 bits per sample, then FLAC encoded) and put on the
>>> Internet for us all to enjoy.
>>>
>>> Harold
>>> https://w6iwi.org
>>>
>>>
>>>
>>>
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>>>> Jordan Spencer Cunningham's GreenKeys Search Tool: 
>>>> https://teletype.net/gksearch
>>>> 2002-to-present greenkeys archive: 
>>>> http://mailman.qth.net/pipermail/greenkeys/
>>>> 1998-to-2001 greenkeys archive: 
>>>> http://mailman.qth.net/archive/greenkeys/greenkeys.html
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>>>> http://comcents.com/tty/greenkeyssearch.html
>
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