Mini-Z Radio System Summary
Mini-Z started with 27Mhz AM system. The problems were well known. Once there are a few cars on the track, there are major interference issues. On some corners of the track, the car would just sit there and not move. The trick is to speed thru those sections of the track, and don't crash there. The response was slow. I estimate it to be 15ms.
AD Band was a replacement board and module to be used on KO Propo radio. It worked great except every 15 minutes it would shut down for no reason, and the car wouuld stop. You have to turn the car off then on again to reset the system. There was an AD Band knock off in Asia. Unfortunately, that one also copied the shut down flaw.
ASF 2.4 GHz
This is the radio that finally solved the interference and shut down issue. ASF stands for auto select frequency. But, and there is always a "but", there was a built in delay for reverse. In mini-z, you crash often, and have to back up often. That reverse delay was a handicap. The KT-18 radio came out before the KO Propo module, so people had to run with the Kyosho radio for a while. It was actually quite a good radio. The reverse delay issue was always there until Kyosho came out with the MR03 that has an option to eliminate the reverse delay. Finally, everything was right with the world, or at least Mini-Z world.
FHS 2.4 GHz
FHS stands for frequency hopping system. The FHS is a budget radio. It came with the MR-03 sport series. The KT-19 radio is not compatible with ASF radio. The antenna is blue to differentiate it from ASF. The quality of the board is very poor, and unreliable. This is not recommended.
FHSS was the next version of FHS. The radio is KT-531P. I assume this is suppose to correct the problems in FHS. In the DSLR camera world, it would be like Nikon coming out with D610 to correct the oil issues on the D600 full frame camera. Syncro Touch KT-432PT is compatible with both FHS and FHSS. The FHS and FHSS systems seems to be an entry level system that has no upgrade path. Higher end radio is not compatible with this.
MHS 2.4 GHz
MHS stands for Mini-Z Hybrid Spread spectum system. Is supposed to be 4x faster than ASF. It has red antenna. This is the highest quality system for Mini-Z
EX-6 are for both ASF and MHS. KoPropo EX-RR also can control MHS, and is a professional radio.
PN Racing Radio System
V2 RC Board - Spektrum DSM2
Just as Kyosho is wrapping itself around the axel with new radio system after radio systems that are not compatible, PN Racing came up with a universal board for the Mini-Z. It uses the commonly available Spektrum DSM2 compatible radio. The board comes with PN's own high performance 2x2 MOSFET. Settings can be programmed using either a PC or an Android phone using bluetooth with the PN Racing Bluetooth ICS Adapter.
The PN Racing PNR2.5W chassis is desiged around both the PN board and Kyosho board. Now you can have an almost complete PN Racing Mini-Z.
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