Moto S1350C watt meter questions

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mostar
Posts: 109
Joined: Sat Aug 24, 2002 2:45 am

Moto S1350C watt meter questions

Post by mostar »

a couple of questions...

first, does anybody know of a good source of slugs for this meter (i'm already watching ebay)?

second, i have the full range (5W, 10W, 50W, 100W) of 500-1000MHz slugs...would these be at all usable on a radio in the 460 range?

thanks.
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batdude
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..

Post by batdude »

best place is ebay.


problem is that they usually come with a meter.


i'd list your entire set of slugs and see what that brings on greedbay... i'd guess about $80 or so



doug
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kcbooboo
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Post by kcbooboo »

500-1000 MHz elements will work at 450, but you may not get the rated accuracy, so they could say 50 watts when in fact you're putting out 40 or 60. Besides recalibrating them, the pickup element design is slightly different for each band to optimize directivity.

Bob M.
mostar
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Joined: Sat Aug 24, 2002 2:45 am

Post by mostar »

doug -

> i'd list your entire set of slugs and see what that brings on greedbay..

yeah, except i'm not wanting to get rid of them - i'm wanting to obtain the ones i'm missing. :)

> problem is that they usually come with a meter.

yeah...that is what i've seen so far. oh well, i'll keep watching.

bob -

> will work at 450, but you may not get the rated accuracy

thanks. sounds like that will work for me for now, then. until i can find the right slugs, or abandon it altogether and get a Bird...

it really is a nice meter, but the caveat i'll offer for anybody pondering getting one: make sure it comes with the elements you need. :)
Dan562
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What radios do you own?: Kenwood, Yaesu, ICOM, Motorola

S-1350A Motorola Wattmeter Elements

Post by Dan562 »

Hello Mostar,

The elements you have are better suited for the 700 / 800 / 900 MHz frequency bands but as Bob has stated you might get RF readings from 450 MHz, however the accuracy may be hard to tell.

Now about the Wattmeter elements that you're looking to purchase for your /\/\ Wattmeter in the 200 to 550 MHz Range are:

2.5 W ST-1221 "N" (F) / ST-1261 "UHF (F)
5.0 W ST-1222 "N" (F) / ST-1262 "UHF (F)
10 W ST-1223 "N" (F) / ST-1263 "UHF (F)
25 W ST-1224 "N" (F) / ST-1264 "UHF (F)
50 W ST-1225 "N" (F) / ST-1265 "UHF (F)
100 W ST-1226 "N" (F) / ST-1266 "UHF (F)
250 W ST-1227 "N" (F) / ST-1267 "UHF (F)
500 W ST-1228 "N" (F) / ST-1268 "UHF (F)
1000 W ST-1229 "N" (F) / ST-1269 "UHF (F)

The main disadvantage of these wattmeters were the element mechanical construction. The connectors UHF and N were press fitted into both ends and they had a tendency to loosen up and fall out or off. One of /\/\'s mechanical engineers should have caught that mistake and revised the elements with a set screw.

Dan
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