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Author Topic: RF TRANSFER Switches ("baseball" switches) -- update  (Read 2620 times)
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WBear2GCR
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Brrrr- it's cold in the shack! Fire up the BIG RIG


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« on: December 19, 2019, 01:48:24 PM »

Recently I acquired a number of these.
Don't need that many.

So several are for sale.
These are TRANSFER switches, which can be used as a T/R relay, but have a
different switching pattern than say a DPDT switch. Please look it up, if ur not
familiar with them?

These are Sector Microwave Industries SM7N.

3 available with type N SOLD
2 BNC,
and 1 SMA.

$30ea for any of the remaining swithces

Each $40 + $8.00USPS flat rate box.
Continental USA only, please.

The picture is a stock image - the actual units are used, clean.
I took one apart to see how they do it... that pic is mine.
Also have a typical derating chart from a different mfr - keep in mind the published rating
is usually at GHz, not HF.

Hot switching is not recommended (for any TR switch).


* RF TRANSFER SWITCH EXAMPLE-2.jpg (325.52 KB, 1000x520 - viewed 533 times.)

* BASEBALL SWITCH GUTS - A.JPG (376.92 KB, 1480x1110 - viewed 526 times.)
* TRANSFER SW DERATING CHART.pdf (25.58 KB - downloaded 164 times.)
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WBear2GCR
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Posts: 4135


Brrrr- it's cold in the shack! Fire up the BIG RIG


WWW
« Reply #1 on: January 26, 2020, 09:04:59 AM »


The BNC and SMA units are still "up for grabs".

Can get transported to Marlboro Hamfest, if requested.

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_-_- bear WB2GCR                   http://www.bearlabs.com
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