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Marked Astec, not sure what that is yet.

I saw another box which is not standard under the chassis alongside the Crystal oscillator. Perhaps another converter? Sent from Mike's iPhone

thank you Marcel, a great starting point, I will pull the images down today br john

The unit with the 38.667 MHz x-tal is a FET 2 meter converter. Is was publiced in UKW Berichte. Here you can find some information about it: https://ve6aqo.com/images/Projects/DL6SW-Converter/ Br

The extra unit sounds like a converter to allow reception of another band of frequencies. As in converting say the 2m band down to 28MHz or similar. And the replacement 455KHz filter-nice! Sent from

Sold as seen not working, spares or repairs

Hi John, What is a "lucky-dip"? 73 Roger VE7LB

Good day All. My Ebay lucky-dip FRG7 has arrived, and its what I hoped it would be, see pics below. There are a few things that Im struggling to identify, so if anyone has any input, that would be

Hi Steve Thanks for doing that...I just couldn't make the numbers out. I spent ages trawling data books I have and looking for TI mixers on-line, but nothing came up. According to Google, it became

So painfully true. I was thinking of Kat on Deutsche Welle today. Reg

If only Dxing existed anymore John The broadcast bands are high powered China or Romania now Everyone’s gone over to internet… Its a shame My radio is a beauty but sadly nothing to listen to any

For what it's worth I've got a Communications Concepts Inc. (CCI) digital display for my FRG-7. It sits on top. No longer available of course but if you can find one I can highly recommend it. It's

Thanks Pentagrid…I thought it might be one of those myself, but the pin out doesn’t match. As previously mentioned, it looks like a TI logo on on of the images, and SN something or other for the

Hi All, When I looked carefully (pic time_step-01.jpg in files/DFC-7), the mixer is definitely Texas Instruments, and I thought I could make out "SN7651?". Did a search and came up? with a data sheet

By memory I think you will find the mixer is a CA3028 transistor array or similar. Look in any 1970s? American? radio constructor books for details of these chips, they were used often before the

Enjoy it stock. Not worth the effort.

Thanks everyone for your help on this...I've put Steve's diagram and instructions through PaintShop Pro and uploaded the results into the 'files' section on the group. Pentagrid - I've spent most of

Hi All, It seems that loading an image to messages reduces it's resolution :-( So I've put various images etc into files/DFC-7; resolution is 1600x1200 vs 1024x768. Something to remember for the

Simon I have fiddled with the background colour - do these help? Andy

Yes, thats exactly how it was done, the input signal was mixed with a 3.455 MHz oscillator, a low pass filter used to remove the higher mixing product, the counter chip then? read the