[Milsurplus] AN/TRC-1

[Sheldon Daitch]

In some cases, FDM was still in use into the mid-1990s.

VOA still had the mix of tubed and solid state FDM
on the two microwave systems from Greenville Site C to
each of the two transmitter sites, A and B.

See photos 9 and 10 at:

http://www.boxoprints.com/voagreenville

73
Sheldon
WA4MZZ



On 4/24/2012 12:23 AM, Francesco Ledda wrote:
> Yes, they did. FDM systems were still in use in the late 70.
>
>
> Sent from my iPhone
>
>
> On Apr 23, 2012, at 15:46, Ray Fantini<RAFANTINI at salisbury.edu>  wrote:
>
>> Was wondering what it was used for, thought it may be for setting the frequency of the subcarriers on the radios. What were they able to squeeze thru the TRC-1? , four subcarriers? Subcarrier type systems is a technology that probably officially dead now being most everything went to TDM digital, but subcarrier type radio and microwave must have been cutting edge at the time of WW2. Wonder if they had a selective voltmeter or anything like that back then for maintenance?
>> RF
>>
>>
>> -----Original Message-----
>> From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of C.Whitaker
>> Sent: Monday, April 23, 2012 4:07 PM
>> To: milsurplus at mailman.qth.net
>> Subject: Re: [Milsurplus] AN/TRC-1
>>
>> de WB2CPN
>> I have a lot of time with that equipment.
>> The BC-221, in case anyone is a Techie,
>> was for adjusting the channel frequencies of the CF-1 telephone carrier system.
>> It's used only at one end of a link.  The far end adjusts to my carrier frequencies.
>> It's a SSB thing.  Chan 1 was not shifted up.
>> Also have some pictures from Korea 1951.
>> 73  Clete
>> ++++++++++++++++++++++++++++++++++
>>
>>
>> This is a terminal, not a repeater.  The EE-8 is the Order Wire between terminals.
>>
>>
>> On 4/23/2012 11:01 AM, Ray Fantini wrote:
>>> Thought I would bring this up just for people to take a look at, it's a picture of a TRC-1 relay station with receiver, transmitter and rarely seen carrier equipment along with EE-8 and BC-221 Would speculate its maybe in North Africa by the background? Go to:
>>>
>>> http://amfone.net/Amforum/index.php?topic=31173.0
>>>
>>> It's down the page a bit.
>>> RF
>>>
>>>
>>>
>>>
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