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Re: Ebay Lucky-Dip FRG7
Thank you Mike. I do have the afore mentioned pages and they are great IF the set is working :-) I did some more investigation around Q106, all of the supplies measure correct. No o/p on pin3 which
Re: Ebay Lucky-Dip FRG7
See comments below line by line. I have to ask first though, do you have circuit diagram? Better still the September and October 1981 articles in Short Wave magazine by JL Linsley Hood? With these to
By Mike Anthony · #425 ·
Re: Ebay Lucky-Dip FRG7
Today spent a few hours to see why its deaf and the lock led stays on below approx 15Mhz. These are the measurements I got so far. Anyone any thoughts? Inject 3Mhz into antenna Mhz set to 3Mhz,
By John Walker · #424 ·
Re: Ebay Lucky-Dip FRG7
Marked Astec, not sure what that is yet.
By John Walker · #423 ·
Re: Ebay Lucky-Dip FRG7
I saw another box which is not standard under the chassis alongside the Crystal oscillator. Perhaps another converter? Sent from Mike's iPhone
By Mike Anthony · #422 ·
Re: Ebay Lucky-Dip FRG7
thank you Marcel, a great starting point, I will pull the images down today br john
By John Walker · #421 ·
Re: Ebay Lucky-Dip FRG7
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
By Marcel, de PA8MA · #420 ·
Re: Ebay Lucky-Dip FRG7
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
By Mike Anthony · #419 ·
Re: Ebay Lucky-Dip FRG7
Sold as seen not working, spares or repairs
By John Walker · #418 ·
Re: Ebay Lucky-Dip FRG7
Hi John, What is a "lucky-dip"? 73 Roger VE7LB
By Roger VE7LB · #417 ·
Ebay Lucky-Dip FRG7
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
By John Walker · #416 ·
Re: Digital Display for FRG-7
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
By Simon Robinson · #414 ·
Re: Digital Display for FRG-7
So painfully true. I was thinking of Kat on Deutsche Welle today. Reg
By Reginald Beardsley · #413 ·
Re: Digital Display for FRG-7
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
By Mark Feltham · #412 ·
Re: Digital Display for FRG-7
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
By John Hudak · #411 ·
Re: Digital Display for FRG-7
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
By Simon Robinson · #410 ·
Re: Digital Display for FRG-7
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 Steve Quigg (VK2TUM) · #409 ·
Re: Digital Display for FRG-7
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
By Pentagrid · #408 ·
Re: Digital Display for FRG-7
Enjoy it stock. Not worth the effort.
By Arthur Smith · #407 ·
Re: Digital Display for FRG-7
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
By Simon Robinson · #406 ·