[R-390] Product detector

[Stan Gammons]

Cool!

Thanks for sharing!


73

Stan
KM4HQE


On 09/28/2017 06:24 PM, Radio AI2Q wrote:
> Here's mine, Larry.
>
> http://ai2q.org/Prod_det/detector.htm
>
>
> Vy 73, AI2Q, Alex
>
>
>
> ----- Original Message ----- From: "Larry H" <dinlarh at att.net>
> To: <r-390 at mailman.qth.net>
> Sent: Thursday, September 28, 2017 4:08 PM
> Subject: Re: [R-390] R-390a modified IF sub-chassis
>
>
>> This mod does require a panel mod.  The original BFO switch needs to 
>> be changed to a 2 pole 2 position in order to switch the audio.  This 
>> looks pretty clear to me on the schematic Gary supplied.  This is the 
>> same technique used by Lee's original mod.  So, this IF unit will not 
>> work in another R-390A with out the associated wiring and switch change.
>>
>> Regards, Larry
>> ______________________________________________________________
>> R-390 mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/r-390
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:R-390 at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
>> ---
>> This email has been checked for viruses by AVG.
>> http://www.avg.com
>>
>
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html