One easy and cheap way to add a digital frequency display is right here.

Just program the module for an IF shift of -3,455, and it will read the actual Kilohertz receive frequency.

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Here is my version with a color TFT screen.
The startup screen when you switch on the FRG and the digital readout with S-meter.?

Thank you for your information. That's what I thought already. I have owned a FRG for 30 years ago, and I could not remember if there is a zero beat on carrier in USB position, like the modern receivers.

When receiving SSB the BFO is shifted 1.5kHz above or below the carrier frequency for USB or LSB, Most modern receivers allow for this in the frequency display. This is normal. The FRG7 uses a simple LC oscillator, the front panel switch adds a small capacitor across the BFO coil when using USB. The reason for the BFO shift is to keep the SSB signal centred in the IF? filters passband.

Hi Roger, unfortunately I can't receive WWV here in Europe. But I can receive a Russian time signal on 9.996 MHz.?
My Frog has a Kokusai filter. So I had to reallign the BFO. In USB position, zero beat is not the same as the carrier frequency. I have checked it also on broadcast stations. It is always 1,5 kHz above the frequency.?
Does your Frog has zero beat on the carrier??
When the signal is exactly in the middle of the filter,? the frequency on the display is spot on. So the counter calibration seems to be okay.?

Hi Roger,
No I didn't check that. The counter has a calibration routine. I have calibrated it against a high precision Rohde&Schwarz signal generator. So the indication on the display is exact the VFO frequency.
I will listen to the WWV transmitters and see if they match.?

Hi Marcel,
The display looks good. Have you tried checking it's accuracy with WWV on 5, 10 & 15 MHz?

73
Roger VE7LB

Hello, I saw the discussion about the digital readout. I've just finished one for my FRG. It is based on a OLED display and an Arduino micro pro.
I only took the S-meter away, which is still connected and remains in the radio.?
I'm also busy making a version with a TFT color display.

Come on guys.? Enough
.
I bought the FET from a Canadian EBAY seller & when I told him, he immediately refunded all money including shipping.? It was during Easter & he was on vacation but still responded.? He has a 100% rating there.

I know there is too much bogus stuff out there, but this isn't one.
I buy a few things on EBAY & have only gotten burned once.? Maybe I am lucky.
--
-Bob

Accusing Mr Elliot of lying? Certainly not, and what a stupid allegation.
I do however question the parroting of unsolicited allegations of fake components from unknown sources. For instance, unwanted parasitic oscillations are common in high gain audio designs, and can destroy ANY? output transistor even at quiescent .
Many of these reported failures are from non technical people who either lack the knowlege or equipment to track this phenomena, let alone cure it, they are merely following a diagram, or a plan, with the expectation it will work.
One contributor sites a? 2N3055 transistor failing at 4 amps, so it must be a fake. The genuine transistor is rated at 15 amps Ic, max CE voltage 60 by memory. Without any more technical context by the contributor, we cannot diagnose anything. What was the supply? voltage? What was the base current? Was the transistor in saturation? What were the thermal conditions.????Not enough evidence here to allege fakery.
?Was? this gentlemans expectations rather? too high, his understanding too low? perhaps?
To accept this as evidence of a fraud is ridiculous.
?I am sure fake components do exist, but not on the scale you would like to believe.... my initial point.
Even your friend Mr Elliot agrees with me that distributors making a living knowingly selling fake transistors are unlikely to remain in business long, so in that regard, its a self levelling process.?

So, please do not offend me with your assumptions.

Clearly we disagree

This is getting off topic, my final comment.
If fake transistors predominate just the audio world, it does beg the question, why??
Vacuum tubes for instance , they look for the brand name, the colour of the getter, the gold plated pins.
We look for heater? to Cathode voltage, Gm, Mu, plate dissipation and grid bias. Transistors we look at HFe, SOA, Ft, Vsat, among others, not the colour, the hype or the "sound" or whether its recommended by some audio expert down the road, we care not about such things.
Do you seriously expect me to give a "list" of my suppliers, this would take hundreds of pages.
As I have said, only VERY occasionally you "may" have a problem, in which case, if suspicious, or suspect, simply MEASURE the component parameters first ,thats what? competant techs do. There is no excuse for fitting suspect parts , or substitute parts without..... potentially damaging the equipment under repair.

By the way, did you just call Mr. Elliott a liar? He is A PROFESSIONAL

I am just passing along what almost EVERYONE on audiokarma and DIYAUDIO websites says…..
they are full of ordinary people getting fake semiconductors!
many of the people giving these warnings are pro, who have been in the audio hobby for many years…..

could you provide a list of eBay sellers who can be trusted to sell genuine semiconductors, there are many many people including myself would would LOVE to know who we could buy from on eBay

You stated unequivocally that "most transistors sold on Ebay are fake".? This is untrue and an unfair generalisation.
More correctly, SOME transistors sold on Ebay are fake. .
There is a simple reason for this.? Any supplier repeatedly selling known fake semiconductors would soon not be in business.
It is also very common for a failed repair by an untrained hobbiest to be blamed on faulty components. I repair this type of equipment regularly, its been a very good little earner.
I operate an electronic design and repair shop, concentrating mainly on the repair of legacy equipment. I have been reliant mostly on the same Ebay suppliers you mention,? to supply discontinued/obsolete semiconductors, and have twice in 30 years had occasion to question a supplied component/product. This suggests that the "fake" semiconductor problem is not as widespread as is liked to be believed., and I buy a large amount of random semis from random overseas suppliers.? Others in the industry also tell me similar, I have no reason to doubt them.? They also derive a large part of their repair revenue from well meant but? failed repairs? based on youtube videos or mods? performed by the hapless owner.....

this is one of the many many threads on fake semi conductors from China and eBay



this article is most useful

thats not what the people on all the audio sites say, do the research please

I would not be so scathing, most transistors sold on Ebay/Aliexpress? are not fakes. Also bear in mind these dual gate FETs are static sensitive and may have been stored/handles incorrectly by previous warehouses/distributors, or even inadvertantly damaged by the purchaser without any knowlege. Dual gate FETs , even NOS are getting on in years, they are becoming a rare component these days.? Many sellers too, have no idea of what they are selling. The early 2/3 SK series dual gate FET lacked any internal gate protection diodes and were prone to gate "punch? through" by static voltages, the later types, the 40673 for example did have the protection diodes, and therefore more robust with handling.