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The Diamond RH77CA is a high-gain, dual-band handheld antenna optimized for 144 MHz and 430 MHz amateur radio frequencies. Designed for durability and portability, it significantly enhances transmit and receive performance, delivering clearer audio and more reliable connections in diverse environments. Compatible with many handheld transceivers, this precision-tuned antenna is a trusted upgrade for serious ham radio operators seeking extended range and signal clarity.





| ASIN | B0DJQ13S1W |
| Best Sellers Rank | #42 in Two-Way Radio Antennas |
| Brand Name | Diamond Antenna |
| Cable Type | Coaxial |
| Color | Black |
| Compatible Devices | Handheld and Scanner Antennas |
| Compatible Phone Models | No Compatible Phone Models |
| Connector Gender | Male |
| Connector Type | Bnc, Male |
| Customer Package Type | rigid box |
| Customer Reviews | 4.6 4.6 out of 5 stars (101) |
| Frequency | 144 MHz |
| Indoor Outdoor Usage | Indoor |
| Item Shape | Round |
| Manufacturer | Diamond Antenna |
| Model | RH77CA |
| Model Name | RH77CA |
| Number of Pins | 1 |
| Other Special Features of the Product | Designed for handheld and portable radio applications, Dual-band operation optimized for 144 MHz and 430 MHz amateur radio frequencies, Flexible construction for durability and long service life, High gain design for improved transmit and receive performance, Precision tuning for reduced signal loss and improved clarity |
| Outer Material | Braided Copper or Aluminum |
| Recommended Uses For Product | Antenna replacement and signal enhancement for handheld transceivers and scanners |
| Unit Count | 1.0 Count |
| Warranty Description | 1 YEAR |
J**Y
Great option
Allows me to get a lot further from the tower and clear audio, it’s very long so be mindful of that but the value is there 10/10 functions perfectly and as intended
N**Y
Great antenna
Is a solid antenna for my old realistic scanner. Easy 5 stars.
S**E
Well worth the price!
I have a sds100 and for my area this antenna works great. I bought I remtronix 920s and 820s and they were double the price and I returned them. Note: Everything depends on your area what works for me might not work for you. I just felt I should give this a great review for the price, build and works great on simulcast and dmr.
H**R
Nice.
Clearer signal for railroad traffic. There’s a reason why the professional rail-fan nerds use this and now I know why.
O**.
Genuine Diamond Antenna
Genuine. Compared it to one purchased directly from distributor. Performance as expected. Well made.
S**T
Great handheld antena
works great Long range
T**K
A scanner/radio classic!
Best antenna out there..Ive had a few! Paired AWESOME on the sds200!
S**E
Nice Antenna
I bought 2 of these for various handhelds. They work great.
J**N
used with a Uniden Bearcat 125...works way better than the rubber ducky antenna the scanner comes with
Trustpilot
5 days ago
3 days ago