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Reviews Categories | Amplifiers: RF Power - 6M/VHF/UHF+ | Mirage BD-35 Dual Band HT Amplifier (144/440) Help

Reviews Summary for Mirage BD-35 Dual Band HT Amplifier (144/440)
Mirage BD-35 Dual Band HT Amplifier (144/440) Reviews: 30 Average rating: 3.8/5 MSRP: $159.95
Description: The Mirage Dual Band Handheld Amplifier, which includes the 144/440 MHz segments. At 1-7 watts in, it will put out 45/35 watts respectively. It is also capable of full duplex operation, allowing the user to transmit on one band and listen on the other - provided that the handheld you're using is capable of this function. Listed frequency ranges are 144-146 on 2 meters and 430-450 on 70 centimeters. It is described as having an automatic band select, on-air indicator, and reverse polarity protection.
Product is in production.
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8P6RC Rating: 5/5 Aug 14, 2018 21:31 Send this review to a friend
Awesome  Time owned: more than 12 months
I have used my BD-35 for over 10 years without fail! I live in a location that's in a valley with an hill interrupting line of sight. The BD-35 gave me the ability of communicate clearly. I would not hesitate to purchase another one if the need be.
KB1UKU Rating: 3/5 Aug 24, 2017 15:22 Send this review to a friend
BD-35  Time owned: more than 12 months
I have been using the Mirage BD-35 for a number of years now mounted on a tripod. I got back most of my tripod and amplifier but without mounting bracket. Went up to HRO to buy a new amplifier and returned it immediately. Bracket is no long one piece for tripods. It is two pieces for mobile use. Most tripods barely have room forth screws let alone four. I have Comet Duplexer mounted to telescope tube and a new Aluminum leg tripod and center plate is hard to get screws into. So my amp is now duct taped to triangle leg plate. I sent away for Icom transceiver mounting plate but will have to cut and weld it to fit BD-35. I called MFJ to get original mounting bracket but they said it now has two piece bracket and when I ordered one bracket, I got half? They call left a mounting bracket and two pieces left and right. $1.50 each half. I ordered a set of nice Thumb screws from China for installing radio to new Icom bracket. Nice thick Aluminum bracket. The duplexer is CF-4160 and the ISS isn't doing much Ham stuff for us. Only certain schools and planning a year in advance. Cmd Wheellock used to be talking up a storm before. But as of 2 June 2017 they plan a year ahead for QSO's. If I build a new tripod I will use an old fashion Icom IC-481H Satellite transceiver, 2 meter and 440 rec only. I hate BD-35 two piece mounting bracket. Got lots of two piece brackets now.
VE3IPS Rating: 1/5 Feb 19, 2016 19:21 Send this review to a friend
Mighty Fine Junk  Time owned: 6 to 12 months
I used this twice and on the third time the common Vhf problem arose.

This is garbage and I will never buy any MFJ product again and will recommend others to stop wasting their money on MFJ.

The older Mirage product was properly built but I find it annoying to spend money on something that is of poor quality

So as a UHF amplifier it works OK but as a dual banker amplifier it really doesn't work
W4KVW Rating: 5/5 Aug 4, 2014 22:25 Send this review to a friend
WORKS GREAT!  Time owned: more than 12 months
I love the MIRAGE BD-35 Dual Band amplifier.It works VERY well with my ICOM IC-91AD & an MFJ Shorty Dual band mag mount in the center of the roof of my pickup truck.I only use it for D-STAR in my mobile but it has done a wonderful job for me.Don't know why they did not include a pre-amp also but that's not something I really need with the Great receive on the 91AD.I mounted a small 12 volt fan on top of the heat sinks to keep it extra cool when getting long winded & I have had ZERO issues.I only paid $35 for the BD-35 used & that was a steal & it looks as if it was never used.I would not hesitate to buy another BD-35 if I needed another amplifier for an HT on 2 meters or 440 mhz because it works Great on BOTH bands & is VERY compact.Unlike others posting here I am VERY "HAPPY" with my MIRAGE BD-35 & it is NOT for sale! {:>)
W2MB Rating: 4/5 Oct 7, 2013 12:42 Send this review to a friend
TH-F6A Caution  Time owned: 0 to 3 months
I drive this device with a Kenwood TH-F6A tri-band 2/220/440 HT. The device feeds a Comet SBB-224 Tri-band Vertical. It is designed for and works well on 2 meters and 440.

It indicates both VHF and UHF signal presence and makes strange sounds if driven with a 220 signal.

Mirage support says that it should be powered off and that it will pass the 220 signal. This is not true, even with the device powered down, it does not pass much 220 RF signal through to the antenna. It appears that the band sensing/ switching circuitry attenuates the 220 signal.

It works well for what it is designed, but doesn't tolerate or pass a 220 signal
KF4AX Rating: 0/5 Jun 14, 2012 17:20 Send this review to a friend
poorly built  Time owned: 0 to 3 months
KF4AX here. Just paid $110 for a mint used BD-35, arrived AOK, worked for 2 days. I was only on the air with it maybe 10 minutes each day with 2 watts in and the VHF side quit. UHF is still fine.

It seems there is only one schematic in existence and it is a horrendous multiple-photocopied version of a hand drawn diagram, apparently made by someone with a dull pencil and a full blown case of Parkinson's. MFJ is useless, they offered me the same handwritten schematic!!!

I pulled the board and the foil side looks like it was soldered by a drunk monkey with a 10 watt iron. Can't make head nor tail of the schematic, guess I'm just stuck with a UHF-only amp.

Comments seem to be a case of 2 extremes, either they've had it for years and it works like a champ, or it arrived dead or dies shortly thereafter. Run, don't walk away from this amp!
DL3GAZ Rating: 3/5 Nov 27, 2011 09:35 Send this review to a friend
Good design - Factory spoils it.  Time owned: 0 to 3 months
Smart amplifier concept: one transistor for both bands, competitors use two transistors and are more expensive. Unfortunately, the realisation in Taiwan is less than smart: the board is a mess, some cruicial components are low quality, the builders don't seem to know what they are doing.

All issues mentioned from the reviewers before can be still reproduced in 2011, especially when operating UHF in the cold. Definitely nothing you would rely on for amateur radio emergency communications.

The good news is, all can be fixed and after modification the amp is a reliable piece of equipment for FM and GMSK (D-STAR). Contact me for instructions. Good soldering skills are required.

I rate this amp 1/5 for out-of-the-box performance and 5/5 for performance and reliability after modification.

Thanks go out to WA0LHB and the folks from MFJ support for their help.
KJ6PQG Rating: 5/5 Nov 13, 2011 20:31 Send this review to a friend
Great  Time owned: 3 to 6 months
Well this is my first experience with an amp. and I chose this one after reading reviews here and exchanging some emails with another ham. So far it works great and I have no complaints. I use it in my car with a Yeasu FT60 and a mag mounted antenna. I have had it for only a few months.
KJ4QAN Rating: 4/5 Aug 5, 2011 13:15 Send this review to a friend
It's a good amp, but don't overwork it.  Time owned: more than 12 months
I had mine for two years and always pushed to full power. My SWR meter indicated that it would put out 55W on VHF and 45W on UHF. That was with a j-pole and Yaesu FT60 set on HIGH. I checked it with a dummy-load and it read the same. That's somewhat higher than the specs say, but I was happy. I noticed that during nets it would get quite hot, but not so hot that I couldn't keep my hand on it. Well I killed it yesterday. I was on a simplex net on 2M and had been talking pretty continuously for about 20 minutes (at about 80% duty-cycle) and it just quit. I took it apart and decided it wasn't worth repairing. They're not that expensive. In other words, it's a trow-away.

I'm going to buy another one because it's a great little package and I liked how I could use it with a battery when the power went out. I live in Florida, the lightning capital of the US and I used it during SKYWARN nets. But I'm not going to push it to full power anymore unless it's necessary, and then for only a couple minutes. If you take yours apart you'll see that the power MOSFET is bolted directly to the heatsink and with a good amount of thermal compound. To make the heatsink that hot it has to be working really hard. Don't do that if you want yours to last.

My recommendation is that; if you need to use 50W all the time, then use a mobile rig or buy one of Mirage's more powerful single band amps.
KJ4FGI Rating: 5/5 Mar 24, 2011 23:50 Send this review to a friend
Good Amp  Time owned: more than 12 months
Had it in the car to complement my HT worked great than put it in the house using a Diamond base antenna, great again, I am now using it portable coupled to a 12 volt portable battery for satellite work out in the yard. again works great, had it for three years now. Very versatile.
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