Lectrosonics Question

Z

zijital

Veteran
Does anyone know if 200 series & 100 series Lectro sets work with each other?

I know the 400 transmitters or receivers can be programed to work with nearly any other series tx or rx.

I know they have to be on the same frequency, but can a UCR210 pick up a UH195? Or a UCR195D work with a UM200?


thanks
 
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The 200 and 100 series have different compander schemes, so no, they are not compatible with each other.

The 195 and 200 series have the same compander schemes and are compatible with each other.

I am not familiar with a UH105.

Glen Trew
 
I should also say that the 100 transmitter and LM transmitter have been replaced by the LMa transmitter, which can be switched to be compatible with either.

Glen Trew
 
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I have used the LM, but not the LMa. However, there are a few reasons that the LM series is less expensive than the UM400 series:

1) The antenna is soldered in place, and not removeable (I actually prefer this over the more expensive removeable antenna... They are very robust, and it's just one less thing to lose).

2) 50mW rated output power. (But before jumping to negative conclusions, consider that the reason this reduces cost of the unit is that the LMa transmitters do not have to all be bench tested and adjusted to 100mW. Therefore, the output power of the LM transmitters can vary between 50mW and 100mW, usually settling in at around 70mW. But also keep in mind that the range difference between 50mW and 100mW is not double as one might think, but in the real world may be less than 10%.

3) The output stage of the LM transmitter is less sophisticated than the UM400, which increases the amount of RF mixing from nearby transmitters, which can dramatically increase dropouts when used near other transmitters (such as when two or more people are standing next to each other). This reduces the cost, and while this is fine for its intended use (single person on stage, such as a preacher in a church), it can reduce reliability when several channels are used nearby.

4) The LM transmitter has a less expensive wire spring clip. Personally i don't mind this clip, because it keeps the transmitter thinner and the clip is easy to remove when not wanted.

Glen Trew
 
@Glen Trew-Thanks for the response. I actually did some research as well on the Lectrosonics site and found some interesting information. Along with your info, others, and research I have figured out what I want to purchase.


Nicole
 
Glen Trew said:
I have used the LM, but not the LMa. However, there are a few reasons that the LM series is less expensive than the UM400 series:

3) The output stage of the LM transmitter is less sophisticated than the UM400, which increases the amount of RF mixing from nearby transmitters, which can dramatically increase dropouts when used near other transmitters (such as when two or more people are standing next to each other). This reduces the cost, and while this is fine for its intended use (single person on stage, such as a preacher in a church), it can reduce reliability when several channels are used nearby.
Click to expand...

Glen, I agree with all your other points and even the above is mostly correct for the LM.

Just a few comments:

The LMa (replacement for the older LM) does actually have the circular isolator now, so this greatly reduces the level of any intermod products. So essentially, the LMa is now a lower power version of the UM400a.

But I wanted to clarify this issue of isolator vs. no isolator and the potential for intermod interference. First off, transmitters have to be VERY close together to show appreciable intermod levels. Even then, transmitters with robust output designs (RF amps with headroom) exhibit lower intermods than comparable transmitters with less robust designs. We've done testing here that shows that the original LM (~50mW) shows much lower intermod levels than comparable 30mW transmitters. So in practice, this is almost moot. There are quite a few multi-channel setups out there with original LM transmitters and they work great.

This is not to say things are better with the isolator in place - they are. But the cases where you could tell the difference are few and far between.
 
@Karl-Great info especially since you work with the company. I'll either be getting the Lm or Lma as you mentioned I know people who have used or own both and no complaints yet at least not anything major.

Nicole
 
I have both the LM and the LMa and they work great. I also have a UM200 and prefer the LM's. I especially like the clip on the LM's much better. It is smaller and reduces the weight some and works great with the mic pack belts from Remote Audio (thanks Glen ;-). I use mine primarily with the Lectro Venue system and it is amazing (again, thanks Glen for the good deal and the great service on the Venue).

(BTW - and I get no benefit from this - I strongly and highly recommend Trew Audio for all your audio purchases, both new and used. Their service is great and they know their products.)

Phil
 
Glen, since I don't think this is entirely off topic, have you worked with the new UH400 plug on much? I'm looking at it for wireless boom work (replacing my Zaxcom goldline wireless boom setup). Any thoughts?

Thanks!

Phil
 
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