Experimental Baofeng RD-5R version

[SO5AJG]

Possibly this may be the same problem that some people exprience on the GD-77 which may possibly be caused by the display brightness control.

You could try 100% and 10% or 0% brightness and see if this makes any difference.

Also, perhaps battery level or whether the radio is in the charger affects this.

I noticed that transmitting on FM with the radio in the charger creates a lot of hum and other nasty noises, so I would not recommend using the RD-5R / DM-5R in the charger

FYI.
I had a QSO with VK4JWT who was using a DM-5R Tier2, using the Open firmware and I did not hear any problems with his modulation

Generally, in my RD-5R I did not notice the dependence of the quality of transmission on the level of display brightness or battery level. I never use the charger when transmitting, because it is an unnecessary burden for itself. After all, its task is only to charge the battery with a much lower current and not additionally supply the power amplifier with a much higher current, especially at 5W. It is also strange that the interference sometimes intensifies and sometimes almost cannot be heard. Unless they are external.

[SO5AJG]

I have a question whether after changing the RD-5R radio software to OpenGD77 it will still be able to receive normal FM radio stations in the 88-108MHz band. Sometimes it was a useful function besides receiving VHF / UHF stations. In addition, from what I noticed when using the new software, the power settings are not related to real ones, maybe up to 1W. In addition, the level of a fully charged battery indicates about 80%.

[IU1MCR]

Hi Roger
RD-5R:
tnx for the correction on squelch.
another bug - when in VFO -> NO Quick Menu & when in Channel -> Quick Menu is different (old version?) from QM of GD77
RD-5R: "Filter:CC, TS, TG / VFO--> New Chan / Tone scan N/A" etc
GD-77: "Filter:CC, TS, TG / Channel --> VFO / VFO --> Channel"
Buona giornata
Eugenio

This is fixed now

Hi Roger,
GD77: OK - VFO Quick Menu 7 item to choose
RD5R: VFO Quick Menu 6 item to choose (VFO:A or VFO:B is missing )
Grazie e buona serata
IU1MCR Eugenio

[F1RMB]

Hi,

Hi Roger
RD-5R:
tnx for the correction on squelch.
another bug - when in VFO -> NO Quick Menu & when in Channel -> Quick Menu is different (old version?) from QM of GD77
RD-5R: "Filter:CC, TS, TG / VFO--> New Chan / Tone scan N/A" etc
GD-77: "Filter:CC, TS, TG / Channel --> VFO / VFO --> Channel"
Buona giornata
Eugenio

This is fixed now

Hi Roger,
GD77: OK - VFO Quick Menu 7 item to choose
RD5R: VFO Quick Menu 6 item to choose (VFO:A or VFO:B is missing )
Grazie e buona serata
IU1MCR Eugenio

It's not missing, you have a dedicated button A/B

Cheers.
---
Daniel

[VK3KYY]

I have a question whether after changing the RD-5R radio software to OpenGD77 it will still be able to receive normal FM radio stations in the 88-108MHz band. Sometimes it was a useful function besides receiving VHF / UHF stations. In addition, from what I noticed when using the new software, the power settings are not related to real ones, maybe up to 1W. In addition, the level of a fully charged battery indicates about 80%.

Does the official firmware do this ??

I didnt think this radio had that feature

How do you set the RD-5R to receive in the FM broadcast band ?

I think you may be confusing the UV-5R with RD-5R.
The RD-5R spec is

TDMA-Based Dual Mode: With VHF 136-174MHz/ UHF400-470MHz, RD-5R is able to have two bands 2 m and 70 cm. And this time, it is a true dual time slot DMR, Tier I & II, compatible with Motorola and other DMR.

https://www.radioddity.com/products/rad ... -way-radio

[VK3KYY]

I have a question whether after changing the RD-5R radio software to OpenGD77 it will still be able to receive normal FM radio stations in the 88-108MHz band. Sometimes it was a useful function besides receiving VHF / UHF stations. In addition, from what I noticed when using the new software, the power settings are not related to real ones, maybe up to 1W. In addition, the level of a fully charged battery indicates about 80%.

Does the official firmware do this ??

I didnt think this radio had that feature

How do you set the RD-5R to receive in the FM broadcast band ?

I think you may be confusing the UV-5R with RD-5R.
The RD-5R spec is

TDMA-Based Dual Mode: With VHF 136-174MHz/ UHF400-470MHz, RD-5R is able to have two bands 2 m and 70 cm. And this time, it is a true dual time slot DMR, Tier I & II, compatible with Motorola and other DMR.

https://www.radioddity.com/products/rad ... -way-radio

Umm.

I found one spec that claims this radio does 68 - 108Mhz

https://www.rigpix.com/baofeng/rd5r.htm

Does pressing the Band button switch to FM broadcast radio mode

[SO5AJG]

Both UV-5R and RD-5R radio have the ability to receive FM radio stations 88-108MHz. I myself using this function of the FM radio using the RD-5R with old software. For this purpose, the integrated circuit RDA5802 is used to receive FM broadcasting band and is mounted on both UV-5R and RD-5R radios.

[VK3KYY]

How do you access the FM broadcast band. I tried loading the official firmware and the Band button does nothing.

I'll look for the broadcast band chip, but I don't know if my radio has this.

Hence the OpenRD5R does not support it

[SO5AJG]

In fact, the FM range on this radio is 68-108MHz and in Europe FM broadcast use the 88-108MHz band. In the old software, FM radio stations were selected not with the Band button, but properly programmed with one of the SK1 or SK2 shortcut buttons, assigning the FM setting. The Band button was used to switch between VHF / UHF or sometimes a 1750 Hz tone selection.

[IU1MCR]

Hi Roger,
yes, RD5R original firmware can receive FM 88-108 MHz.
The function is selectable in Buttons in CPS. (A very nice feature, )
Can you replicate these function here ?