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Reviews Categories | Antennas: VHF/UHF+ Omnidirectional: verticals, mobile, etc | Diamond RH77CA Help

Reviews Summary for Diamond RH77CA
Diamond RH77CA Reviews: 36 Average rating: 4.8/5 MSRP: $24.99
Description: Dual-Band HT/Scanner Antenna (BNC)

Gain: 2.15dBi (430 MHz) Max Power: 50W (Watts) Impedance: 50 Ohm Length: 30 cm Weight: 40g Connector: BNC 1/4 wave length (144 MHz), 1/2 wave length (430 MHz) and finally Made in Japan.

Product is in production.
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KD6ANF Rating: 5/5 Jul 21, 2009 13:08 Send this review to a friend
A MUST Have  Time owned: more than 12 months
This review is for a Diamond RH-77B which is an older version of the current RH-77CA. My RH-77B was first purchased in the early '90's from HRO in Oakland, CA and still to this day is the best dual-band portable antenna I've used. It is not normally attached to my FT-470 or FT-51R however it is always carried along just in case. Personally it is just too long at about 15 inches, (a real armpit poker), to have on the radio all the time. However, when it is attached both RX/TX signals improve dramatically over the stock antennas available for these two particular hand-held portable radios. I have consistently brought up a repeater in the hills of Santa Barbara, CA form the park next to the Point Vicente Lighthouse in Palos Verdes, CA, a distance of better than 90 miles. This antenna is a real performer!

Best regards

george potter KD6ANF
KC2ULM Rating: 5/5 Apr 30, 2009 07:28 Send this review to a friend
Excellent for Sats  Time owned: 6 to 12 months
I have a Diamond 77 antenna (SMA version) I use for satellites in the backyard with a Yaesu FT-60 HT. For this setup I would recommend 40 degree pass or better on the birds.
Yesterday I had an 82 degree pass on the AO27, and made 5 QSOs! Not bad for a handheld with rubber ducky antenna in the backyard! It also works very well with the local repeaters.
Highly recommended replacement for the FT-60 stock antenna!
N6HPO Rating: 5/5 Apr 3, 2009 19:59 Send this review to a friend
Excellent, even on 220!  Time owned: more than 12 months
Just recently bought a mint Alinco DJ-280 H/T. The stock antenna was tossed in the drawer-of-no-return immediately. Was looking on EHAM for a SRH320A Triband HT Antenna. Although I found one, I thought for a moment; I had an RH77CA on my R/S scanner, so I thought I'd try it on the 220 H/T to gauge its performance.

Well, with 1 watt and the RH77CA installed, it hit a repeater 30 miles away...from inside my stuccoed garage.

With that kind of performance from the antenna, I believe it's found a new home on my 220.

KI4HNN Rating: 3/5 Oct 17, 2008 07:47 Send this review to a friend
OK antenna  Time owned: 0 to 3 months
Bought this antenna after reading the reviews to go with my FT60. It is a very nice antenna but I saw no improvement in reception over my stock FT60 antenna. Just slightly better improvements on UHF. Maybe my area but the stock works just as good as this antenna.
N3IDG Rating: 5/5 Aug 20, 2008 14:53 Send this review to a friend
worth its weight in gold  Time owned: more than 12 months
got mine second hand at a fest.use this primarly as a scanner ant, have used it for a talkie ant to extend my range to on my ht about 50 percent,i lttle long but worth it
KI6PDQ Rating: 5/5 Jul 11, 2008 22:08 Send this review to a friend
Really nice.  Time owned: 6 to 12 months
Really nice antenna, I use it with a magnet mount adapter with a cord but if I want I can also use it to replace my marine radio rubber duck, button line is........ it really improves reception a lot!
N2CLB Rating: 5/5 Apr 8, 2008 06:18 Send this review to a friend
top notch  Time owned: 6 to 12 months
I have 2 RH77CA's i use one for Fire and Rescue in the 154MHZ area and one for 2M ham, on the fire and rescue side it has filled in most of the "dead spots" when other units can't get out i just hand them my HT and say try this it works every time, on the ham side it has extended the rang of my ht to the point where i now have a shr77ca or a rh77ca on every ht i own.

VE2ZPS Rating: 5/5 Nov 20, 2007 18:11 Send this review to a friend
Simply the Best Flexible Antenna !!!  Time owned: more than 12 months
I've been using the Diamond RH77CA for over 12 years now mainly for scanners and most recently for my portable (TH-F6A).

What I often do with friends who owns scanners: I ask them to show me what kind of signals they're getting with their original rubber duck... and then I pull out my SRH77CA and tell them – Try this just for fun… the reaction is always the same .... WOW I WANT ONE !!!

Bottom line: I never leave home without my 2 Diamond RH77CA and when I see someone with an original rubber duck on a scanner I say to myself… "..poor guy he doesn't know what he's missing.."
KQ6EA Rating: 5/5 Jul 4, 2007 17:14 Send this review to a friend
Well Worth The Price!  Time owned: 0 to 3 months
After buying the SMA version of this for my Kenwood TH-D7, I was so happy I bought the BNC version for my ICom W32A. Well worth the money for the increased performance over either of the two ICom antennas I previously used.
AA6A Rating: 5/5 Sep 3, 2006 11:57 Send this review to a friend
14 years of performance!  Time owned: more than 12 months
Originally purchased for use w/ a TH-78a, this is a very durable performing antenna. It is certainly the most durable of all my long (>12")HT whip antennas.

I've no recollection of the mfg's performance db gain claims, but this antenna really gets the signal out. I now use it with my TH-F6a HTs when on the fringes of the repeaters.

It's also my antenna of choice for use w/ window mounts for rental cars while traveling. For use with the T-F6a, it's mounted to one of Stephen Gulyas' exceptional one-of-a-kind BGA-80 BNC to SMA adapters. If you want the absolute very best BNC to SMA adapters check his out. They were previewed in the Nov. 2000 Issue of QST magazine and the May 2000 Issue of CQ Magazine. See:

Very 73,

Rob - AA6A
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