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61  Hello. I bought the RT32 WALKIE TALKIE and need therefore a german owners manual. Please can you send me such a owners manual as a pdf? Thanks and best regards Winni
62  Is the rt21 compatible with h777? My coworkers have the h777s but I want the rt21.
Yes, RT21 can compatible with H777, Under frequency and CTCSS is same, they are communicate with each other Could you tell me how many do you need? we can provide a discount price for you
63  I down loaded the new firmware from Facebook and installed RETEVIS-Vocoder-RT3-S13.32.bin, now all i get now is a white screen. please could you advise if the old firmware is available Ver:D013.009 CP Ver: V01.30 or advise how i can fix this problem. regards
Hello , I guess you chose the wrong file to upload , The firmware file begins with S means with GPS, begin with D means Without GPS , Does your RT3 have GPS ?
64  Can I to use a battery from the PUXING-888 as spare battery for the R-23?
Please note: it's can't as spare battery for RT23
65  What is the max range for the H-777?
Normally communication range is 1-5km,but it's affected by different environment,so max range is uncertain
66  Witch Channel Spacing does the H777 Radio use? Is it switchable? For example 12,5/25khz? Can I use the programming cable from the RT1 Radio? Best regards, Sven
Hello, Sven,thank you for your question you mean the Wide/Narrow Band(25kHz/12.5kHz)? can switchable, you need down load H777 usb driver and software from our official website: http://www.retevis.com/resources-center/ Yes , RT1 Radio and H777 can use the same programming cable. Regards
67  Is there a set list of frequencies that the radios operate on or can they be programmed to any UHF Part 90 frequencies
Yes ,it could be set to any UHF Part 90 frequencies . And any of frequencies that between 400-470MHz
68  Is there I can order just the earbud at the end of the transparent tube that comes with the "2 Pin PTT MIC Covert" headset? I lost one of mines recently and I don't want to order another headset just to get more earbuds.
Sure , please have a check here :