[CQ-Contest] RECORDING ON FT5000 FT2000 FT950

[Jim Brown]

Yes. I do the same. Recording both TX and RX simply changes the "takeoff 
point" for the recording from the headphone of the SO2R box to the 
headphone amplifiers of the radios. And, of course, it requires 
reasonably good balance between levels of the monitor output of 
transmitted audio and the received audio.

Since my QTH makes me a non-contender in DX contests, I've never 
bothered to set up a system to do this.

In general, audio output stages have a low impedance and audio input 
stages have a high impedance, so multiple inputs can be connected in 
parallel across a source IF the chassis of all sources are properly 
bonded together, and all interconnected gear gets power from outlets 
that share the same "green wire" or from outlets whose "green wires" are 
bonded together at the outlets.

SO -- a two-channel recording device, whether a computer or a dedicated 
audio recorder, could simply be wired in parallel with the headphone 
outputs of the radios, either directly, or with a simple resistive 
voltage divider to prevent overload of the device's mic input by the 
higher output of the headphone amp.

This records the headphone outputs. I don't know anything about the 
radios, and whether they feed TX audio to headphones. It would certainly 
work for CW if the CW sidetone was reasonably close in level to RX audio.

73, Jim K9YC

On Sun,3/5/2017 9:20 AM, Steve London wrote:
> Correction...
>
> It has been brought to my attention that the rule says:
>
> "...  must record the transmitted and received audio as heard by the
> operator for the duration of the contest operation"
>
> For my station configuration, that is "interesting". Running SO2R, I 
> always have the CW sidetone and SSB TX Monitor muted. Thus, the 
> operator (me) doesn't hear any transmitted audio, and, therefore there 
> is no transmitted audio to be recorded.
>
> 73,
> Steve, N2IC
>
>
> On 03/05/2017 07:49 AM, Steve London wrote:
>> For the purposes of CQWW and WPX recording, your transmit audio is not
>> required. They want to hear what you heard.
>>
>> 73,
>> Steve, N2IC
>>
>> On 03/04/2017 09:01 PM, Trent Sampson wrote:
>>> All this recording talk has made me revisit the shack configuration.
>>>
>>>
>>> After testing the FT2000 FT950 I can get the RX audio out of the
>>> RECORD Jack on the rear panel but no transmit audio on any modes
>>>
>>>
>>> The Manual(s) says to set monitor to on - but there is no difference -
>>>
>>>
>>> Modes will be SSB RTTY and CW.
>>>
>>>
>>> Has anyone successfully done this or do I need to try some other point?
>>>
>>>
>>> My issue is the FT5000 rigs are at a remote site and really want to be
>>> able to sort this out prior to the 4 hour round trip to the remote.
>>>
>>>
>>> Thanks in advance.
>>>
>>>
>>> Regards
>>>
>>> Trent
>>> VK4TS
>>> PO Box 275
>>> Mooloolaba 4557
>>> 0408497550
>>>
>>> _______________________________________________
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>>> CQ-Contest at contesting.com
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>>>
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