Re: Lock light stays on
I don't think the HG unit is running. Putting the scope on TP106 I get nothing. It's getting the 9 volts.
I haven't as yet? popped the lid off the HG enclosure.
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Brian Waligorski N6RZR
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#339
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Re: Lock light stays on
Yes, you need to fix those? mechanical issues first. It seems someone has really fiddled with this one
The kilocycle tuning capacitor needs careful setting up. With the vanes fully closed, the tuning
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Pentagrid
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#338
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Re: Lock light stays on
Screen grab of output from osc board. Freq varies smooth from 83 mhz @ 29 mhz down to 54 @ at 0 mhz
taken at TP 101 /102 gnd.
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Brian Waligorski N6RZR
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#337
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Re: Lock light stays on
Pentagrid, thanks for the reply.
I did the tests as you described and I could not get any signal on the AM radio tuned to 1mHz positioned near the mixer chip.
But I did get a signal at 84mHz when the
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Brian Waligorski N6RZR
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#336
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Re: Lock light stays on
The above should have the FM radio tuned to 84 mHz, my mistake.? Most modern digital RXs will tune this low.
To test the selective amplifier you will need? some test gear, do you have any?
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Pentagrid
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#335
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Re: Lock light stays on
The only section you need look at is the 52.5 Mhz selective amplifier as mentioned in that article. Unfortunately, that article refers to a receiver that is already functional, yours is not.
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Pentagrid
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#334
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Lock light stays on
Greetings, I was given a FRG-7 by a friend. No clue as to the history of this radio. After cleaning all the rotary switches and volume pot I was only able to receive some local AM broadcast as the
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Brian Waligorski N6RZR
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#333
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Re: For sale
Yes. Look at /g/Yaesu-FRG-7/files/2%20-%20Forum%20Rules%20Folder/Yaesu%20FRG-7%20Rules,%20For%20Sale%20or%20Want%20to%20buy%20Posts.txt for selling rules.
73 Roger VE7LB group owner
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Roger VE7LB
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#332
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For sale
Are FRG-7 for sale ads permitted ?
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Gary Sangwell 2E0IHS <2e0ihs@...>
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#331
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Re: Digital readout
Hello,
For someone who is interested. I've posted a short video on Youtube with the right alignement procedure for the LSB and USB offset.
https://www.youtube.com/watch?v=3261CWoSRQE
Have fun and
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Marcel, de PA8MA
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#330
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Re: Digital readout
And if you would like to see the digital readout in action, here is a Youtube link:
https://youtu.be/HXFUL3ghsbc
73, Marcel de PA8MA
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Marcel, de PA8MA
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#329
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Re: Digital readout
Just a short update about the Ebay link.
The previous link has disappeared because I ran out of stock.
This is the new one for someone who is interested
https://www.ebay.nl/itm/145464409063
Regards,
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Marcel, de PA8MA
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#328
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Re: Much improved tuning resolution, mechnical mod
A quick pic of the few mods I have done to this radio, two diode switched filters, these are? selected via the existing mode switch, SSB/CW? and AM /ANL positions select the narrow, and wide
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Pentagrid
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#327
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Edited
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Re: Much improved tuning resolution, mechnical mod
Here is the plastic lid I used, almost any lid will do, but make sure the wife is away when choosing. I thort bright pink was rather fetching.
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Pentagrid
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#326
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Much improved tuning resolution, mechnical mod
The FRG7 has around 12 turns of the tuning knob to cover a 1 meg band segment, pretty fast, requiring the finesse of? safe crackers hands to tune in that ssb station, especially when the machine hs
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Pentagrid
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#325
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Re: Newly acquired FRG7 Loop light stuck on/loop not locking
Here is a simple realignment method requiring few test equipments.
https://worldradiohistory.com/UK/Short-Wave-UK/80s/SWM-1981-10.pdf
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Pentagrid
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#324
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Re: Newly acquired FRG7 Loop light stuck on/loop not locking
Thanks again everyone for the responses.
I do not own an oscilloscope, been meaning to get one for some time now. I think that is the only way I can get further diagnosing, as I am not used to
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dentycamera@...
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#323
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Re: Newly acquired FRG7 Loop light stuck on/loop not locking
NEVER? get? a hot air gun near these old circuit boards. These boards are very poor quality by modern standards and the tracks will be damaged very easily..
L101 is the low frequency RF tuned
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Pentagrid
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#322
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Re: Newly acquired FRG7 Loop light stuck on/loop not locking
I suspect cracked solder joints based on age and the works sometimes. Clean and flux the board, reflow with a hot air gun and I'll bet it's fixed.
Then yuo can proceed with the alignment
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Reginald Beardsley
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#321
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Re: Newly acquired FRG7 Loop light stuck on/loop not locking
Thank you Pentagrid for your quick reply. I think you might be onto something. The set functions very rarely I've only gotten it 3-4 times out of dozens of tries. I'll talk more in depth now about
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dentycamera@...
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#320
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