Question Roav Smart Car Charger F2: Access Full Frequency Range

[cstarker]

I recently purchased the Roav Smart Car Charger F2. The listed frequency range in the data sheet is 87.5 - 108 MHz.(https://cdn.shopify.com/s/files/1/1...er_F2_R5111_EU_Manual.pdf?3419059451899906623)

I can't tune it below 88.1 MHz with the app or built-in controls.

I can use it at 88.1 MHz, but there is still minor interference. My previous BT to FM transmitter could transmit at 87.9 MHz at which there was no interference.

I have the latest version of the companion app. I found nothing about flash updating the transmitter itself.

Has anyone else had this issue? How do I access the full frequency range?

 

[Ralston18]

What about using the FM radio per Pages 4 & 5 of the linked Owner's Manual?

 

[cstarker]

What about using the FM radio per Pages 4 & 5 of the linked Owner's Manual?

This is the only way to use the device as far as I know. I followed this procedure twice, using the built-in buttons and the app. I was never able to tune the transmitter below 88.1 MHz despite the minimum being describe as 87.5 MHz on Page 9, Specifications. There are no frequencies above 88.0 that are usable. My previous BT FM transmitter (now broken) worked flawlessly in the same region (NW USA) at 87.9 MHz. This leads me to believe that the key to success is transmitting below 88.0 MHz

I contacted tech support. They did not immediately tell me that the data sheet was wrong which gives me hope that the device is genuinely defective and should be able to reach 87.5 MHz. They did the classic "are you sure you aren't a dumb-dumb?" and asked me to redo the setup procedure. I am not convinced I am a dumb-dumb, yet.

 

[Ralston18]

"I was never able to tune the transmitter below 88.1 MHz despite the minimum being describe as 87.5 MHz on Page 9,"

What was/is your desired/required frequency?

87.9 MHz? (If I correctly understand your original post.)

 

[cstarker]

"I was never able to tune the transmitter below 88.1 MHz despite the minimum being describe as 87.5 MHz on Page 9,"

What was/is your desired/required frequency?

87.9 MHz? (If I correctly understand your original post.)

Yes, 87.9 MHz worked well with my last BT FM transmitter. After conversing with tech support, they determined that my device is defective. I doubt the English comprehension of the employee so I am still not sure what the actual frequency range is. Either way, I am returning this in favor of a BT casette adapter. Fighting against radio interference in this city might be a losing battle.

Email conversation for those who are interested:

​

---

Re: [<TICKET NUMBER REDACTED>]: Smart Car Charger F2: Accessing Full Frequency Range 5 messages

​

---

roav support team <support@goroav.com>	Tue, Apr 16, 2024 at 11:17 AM​
To: <EMAIL ADDRESS REDACTED>
Dear <NAME REDACTED>, Thank you for contacting Eufy Customer Support. First of all, much appreciate your support in Eufy. We understand that you have some questions about our products. There is a Support Center designed for our customers, which contains a lot of information about the eufy devices. To find your answer quicker, would you mind trying to visit our website first? https://support.eufy.com/s/ If the information can't be found there or you want to wait for the response from our customer service representative, please feel free to email back with a "Further Assistance". Our Specialist from the Support Team will be ready to help you. Please know that your satisfaction is always our top priority. Have a great day! Note: AI robot response: Please kindly be advised that this is information that our AI robot automatically recognized and replied to. If the robot helper does not properly answer your question or sends duplicate information, please email us back and our Support Specialist will reach out to you within 24 hours (Mon.-Fri.) Ticket<TICKET NUMBER REDACTED> If you're not satisfied with our response, click the link below and our management team will reach out to you within 24 hours (Mon.-Fri.) Escalate Your Case Proceed to specialized service

​

---

roav support team <support@goroav.com>	Tue, Apr 16, 2024 at 9:39 PM​
To: <EMAIL ADDRESS REDACTED>
Dear <NAME REDACTED> , Thanks for your information. Please help to do the following troubleshooting: a. Turn on your car radio and turn up the volume of your car speaker as much as you can b. Try every FM frequency from 87.5-107.9MHz(lowest to highest) on your radio. When the radio has white noise (not any broadcast), remember the frequency. c. Turn down the volume. Plug in car charger and connect it with the app. Modulate its FM frequency to the same frequency as the car radio's. If not work, I am afraid the device is defective. Best regards, Reference TicketTNK498165856 if contacting a CSR echo Roav Customer Support Engineer Roav | A Smarter Way to Drive ee [Quoted text hidden]

​

---

<NAME REDACTED> <<EMAIL ADDRESS REDACTED>>	Wed, Apr 17, 2024 at 3:35 PM​
To: roav support team <support@goroav.com>
I am already familiar with this procedure. There are clear frequencies, but they are below 88.1 Mhz. I need to set the Smart Car Charger to transmit below 88.1 MHz. The data sheet for the Smart Car Charger F2 states that the lowest frequency it can transmit on is 87.5. I cannot tune it below 88.1 MHz, thus, I can't access the full frequency range that was advertised. Smart Car Charger F2 Data Sheet: https://cdn.shopify.com/s/files/1/1...er_F2_R5111_EU_Manual.pdf?3419059451899906623 [Quoted text hidden]

​

---

roav support team <support@goroav.com>	Fri, Apr 19, 2024 at 12:41 AM​
To: <EMAIL ADDRESS REDACTED>
Dear <NAME REDACTED> , Thanks for getting back to us. Did you try the troubleshooting we provided? If yes, I am afraid the device is defective. In order to apply for our 12-month warranty that covers any quality or manufacturing-related issues, please provide the following information: - A screenshot or pdf of the invoice confirming the order number and original shipping address of your purchase. - The serial number (SN) on the device - Your shipping address. ⁣ Looking forward to hearing from you and making this right for you as soon as possible. [Quoted text hidden]

​

---

<NAME REDACTED> <<EMAIL ADDRESS REDACTED>>	Fri, Apr 19, 2024 at 6:30 PM​
To: roav support team <support@goroav.com>
I bought this on Amazon and assume that their free return policy applies. I will return it to them and tell them it was defective. Thanks. [Quoted text hidden]