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  1. Yaesu-FRG-7
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Digital readout

 

has anyone added digital readout to their FRG-7 this year ?
 

Hi, please look at the attached articles (unfortunately they are written in Italian, but almost easy to be read).
Good work, regards!
Paolo Viappiani

FRG-7_Viappiani.pdf
FRG-7_Viappiani.pdf
FRG-7 over-range Viappiani.pdf
FRG-7 over-range Viappiani.pdf

 

Hi Paolo,
?Thanks for the display info. I copied your pdf's over to the files section and added translated english versions as well:? /g/Yaesu-FRG-7/files/6%20-%20FRG-7%20with%20non%20GAR-7%20Digital%20Readouts/Paolo%20Viappiani%20Display? .

73
Roger VE7LB Group Owner
 

Mike M.

See the link below which has my review of the Electronic Specialty Products DD-103:


I installed this display on my Yaesu FRG-7 this year and it works nicely.? Not cheap, but well made.? It also works on many other receivers.

Bob B.

On Mon, Sep 12, 2022, 12:58 Roger VE7LB <Roger_VE7LB@...> wrote:
Hi Paolo,
?Thanks for the display info. I copied your pdf's over to the files section and added translated english versions as well:? /g/Yaesu-FRG-7/files/6%20-%20FRG-7%20with%20non%20GAR-7%20Digital%20Readouts/Paolo%20Viappiani%20Display? .

73
Roger VE7LB Group Owner

 

Thanks but my budget is around $20
 

I used some of these many years ago and they were awesome deals
unfortunately they are discontinued


https://www.pongrance.com/
 

I should have mentioned my goal is to replace the kHz drum with a 3 digit display
 

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.

FRG-7 digital readout.jpg

 

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

73
Roger VE7LB
 

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 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.?
 

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.
 

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.
 

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.?

20230425_152618.jpg
20230425_151733.jpg

 


On 25 Apr 2023 19:13, "Marcel, de PA8MA" <mga.jacobs@...> wrote:
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.?
Hi Marcel,

Any chance of you sharing the hardware and code you used please?

TIA,

Ian -G1MZW
 

开云体育

I second that.

?

AK

?

From: Yaesu-FRG-7@groups.io <Yaesu-FRG-7@groups.io> On Behalf Of ian.gillson via groups.io
Sent: dinsdag 25 april 2023 21:09
To: Yaesu-FRG-7@groups.io
Subject: Re: [Yaesu-FRG-7] Digital readout

?

?

On 25 Apr 2023 19:13, "Marcel, de PA8MA" <mga.jacobs@...> wrote:

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.?

Hi Marcel,

?

Any chance of you sharing the hardware and code you used please?

?

TIA,

?

Ian -G1MZW
 

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.
 

On Wed, Apr 26, 2023 at 12:47 AM, Pentagrid wrote:
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.
How do you hook it up?
 

Yes, I will share it, no problem.? 5 Other people have asked me for this counter. I'm drawing a pcb for it.?
It is a prototype at the moment with a buffer amplifier for the HF-input and an opamp for the S-meter. The rest is done by an Arduino Nano or Pro mini with an 1.14" tft screen.
Maybe I'm gonna make a kit for it, or send people pre-programmed and calibrated Arduinos. And also a good description how to build it into the FRG.?
More to come.
 

Great, thanks for that.

Ian G1MZW

On 26 Apr 2023 14:21, "Marcel, de PA8MA" <mga.jacobs@...> wrote:
Yes, I will share it, no problem.? 5 Other people have asked me for this counter. I'm drawing a pcb for it.?
It is a prototype at the moment with a buffer amplifier for the HF-input and an opamp for the S-meter. The rest is done by an Arduino Nano or Pro mini with an 1.14" tft screen.
Maybe I'm gonna make a kit for it, or send people pre-programmed and calibrated Arduinos. And also a good description how to build it into the FRG.?
More to come.

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