# Nao deve exceder 5 para 1

 02:19 Dec 7, 2000
Portuguese to English translations [PRO]
Tech/Engineering
 Portuguese term or phrase: Nao deve exceder 5 para 1 Medir a onda estacionaria (VSWR) das linhas de transmissao. Nao deve exceder 5 para 1. Is this "should not exceed 5 for each one"? Is it really this straightforward or am I missing something? This is an aviation text. Bear.

Summary of answers provided
namust not exceed 5 for (each) 1
 ttagir
na5 to 1
 Lia Fail (X)
namust not exceed 5 to 1
 Phillip Berryman

## Answers

1 hr
must not exceed 5 to 1

Explanation:
"must" probably better than "should"

Text seems clear to me on the face of it but I would defer to someone who knows the field.

P Berryman

 Phillip BerrymanLocal time: 18:41Native speaker of: EnglishPRO pts in pair: 38
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1 day 2 hrs
5 to 1

Explanation:
See the refs below, where a number of elements, including VSWR, are expressed as ratios:

http://www.google.com/search?q=cache:www.wsplc.com/shopping/...

http://www.google.com/search?q=cache:www.rfapps.com/newpage2...

The P-1 computes V.S.W.R. whenever RF is present on a given channel. The formula used is: (...)
An ideal situation would be one where there is some forward voltage and zero reflected volts. In this case, the V.S.W.R. would equal 1.0:1 (FORWARD+0/FORWARD-0). 1.0:1 is therefore the theoretical minimum V.S.W.R. obtainable. In practice, V.S.W.R. values as low as 1.1:1 are difficult to obtain. Note that a V.S.W.R. of 1.9:1 represents about 10% reflected power.

The only problem is that the left hand part is always a number with a decimal; I don't know if that's significant.

 Lia Fail (X)SpainLocal time: 00:41Native speaker of: EnglishPRO pts in pair: 164
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3 days 12 hrs
must not exceed 5 for (each) 1

Explanation:
Ola,

Acho que assim seria bom.

Trata-se duma relacao quantitativa.

Dr TSTagirov
KSU

 ttagirLocal time: 01:41Native speaker of: Russian, TatarPRO pts in pair: 56
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