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by g4eml
Wed Oct 19, 2016 9:18 am
Forum: Hytera General Discussion
Topic: BL-2006 batteries
Replies: 11
Views: 2471

Re: BL-2006 batteries

It sounds like you are unlucky and both batteries are faulty but in different ways. The newer one sounds like it has gone open circuit, maybe something has failed mechanically inside. The original one is strange, rising from 7 to 7.3 over a few minutes sounds normal but the charger is obviously not ...
by g4eml
Mon Oct 17, 2016 6:10 pm
Forum: Hytera General Discussion
Topic: BL-2006 batteries
Replies: 11
Views: 2471

Re: BL-2006 batteries

If the battery starts to charge and then flashes red it could be a faulty charger, but it is more likely the battery is faulty. You should be able to measure the battery voltage while it is charging by measuring on the radio connection terminals (outer of the three small terminals) if the voltage ra...
by g4eml
Mon Oct 17, 2016 2:21 pm
Forum: Hytera General Discussion
Topic: BL-2006 batteries
Replies: 11
Views: 2471

Re: BL-2006 batteries

You should be able to measure the voltage of the battery on the outermost terminals that feed the radio. You can't measure the voltage on the rear charging connections as these are diode protected to only allow current into the battery.


Colin G4EML
by g4eml
Mon Oct 17, 2016 12:51 pm
Forum: General Chit Chat / Off Topic
Topic: Baofeng DM-5R warning.
Replies: 5
Views: 3187

Baofeng DM-5R warning.

This is a warning to anyone that has been excited by the recent announcements for the Baofeng DM-5R dual band radio with DMR. This radio currently only supports DMR Tier 1 operation. Dmr Tier 1 is a basic implementation of the DMR protocol that uses constant carrier transmissions and does not pulse ...
by g4eml
Mon Oct 17, 2016 9:44 am
Forum: TYT
Topic: Retevis RT8 Codeplug
Replies: 1
Views: 1150

Re: Retevis RT8 Codeplug

The RT8 is the same radio as the MD390. I have not seen one but I believe the programming is identical to the MD380. So any guide for the MD380 should be equally valid for the RT8.
by g4eml
Mon Oct 17, 2016 9:35 am
Forum: Hytera General Discussion
Topic: BL-2006 batteries
Replies: 11
Views: 2471

Re: BL-2006 batteries

A flashing red light on the charger does not always mean the battery is faulty. All it means is that the voltage is outside the normal range. This can happen if the battery has been heavily discharged such as by leaving the radio on accidentally. Li-ion batteries work best if they are topped up regu...
by g4eml
Thu Sep 29, 2016 9:22 am
Forum: General Chit Chat / Off Topic
Topic: DMR Network with mobile repeaters...roaming!
Replies: 3
Views: 1493

Re: DMR Network with mobile repeaters...roaming!

Hello Patrick, Roaming is an enhanced form of scanning. A radio set up for roaming has a roam list containing entries for all available repeaters. It scans through this list until it finds a repeater that is above a preset signal level. It then uses this repeater for all transmissions until the sign...
by g4eml
Thu Sep 08, 2016 9:57 am
Forum: TYT
Topic: Decent Speaker Mic for the MD 380.
Replies: 2
Views: 1313

Re: Decent Speaker Mic for the MD 380.

Buying external mikes can be a bit of a gamble on DMR radios. Many have poor RF screening which is a big problem as the pulsing TDMA signal can be heard in the audio. Many others have poor frequency response which can make the DMR audio very muffled. The Kenwood KMC-21 is reported to be a good micro...
by g4eml
Tue Aug 30, 2016 9:40 am
Forum: Salop Network
Topic: Just a little confused help please!!!!
Replies: 6
Views: 2048

Re: Just a little confused help please!!!!

Paul, Because the transmit and receive frequencies are different a good signal in one direction is no guarantee of a good signal in the other. This is especially true when the signal path is obstructed. Your antenna will have different characteristics on the two frequencies and the pattern of peaks ...
by g4eml
Fri Aug 12, 2016 8:37 am
Forum: Salop Network
Topic: Just a little confused help please!!!!
Replies: 6
Views: 2048

Re: Just a little confused help please!!!!

Hi Paul, The range you can expect is the same as from an FM radio. Have a listen on the DMR repeaters frequency with an FM radio. If you can hear it then you should be able to work it. DMR does give clearer speech at low signal levels but the ultimate sensitivity of the radios is the same as FM. Pho...

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