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Yup!

Older Swan amplifiers saved a buck by leaving out the power source for the relay coil. The keying cable to the radio had a 'hot' and 'ground', but both were hot until you keyed the radio's mike. The keying cable was wired across the radio relay's coil. Placed the linear relay's coil directly in parallel to the relay coil in the radio.

Quick way to tell was to look at the keying jack on the amplifier. If the outer body of the jack had an insulating washer under it, a footswitch alone won't do the job. And if the body of the RCA jack is grounded, you're good to go with a footswitch.

And if you get tired of the foot switch, you can put a relay in the radio put a RCA jack on the rear panel and key it with a patch cord.

We sell a kit to do this. It's on Ebay at 45 bucks. The price is borderline out of reason, but that's fleabay-nomics.

Or you can wire up your own. Not that complex.

73

<blockquote data-quote="nomadradio" data-source="post: 803608" data-attributes="member: 22">Yup!Older Swan amplifiers saved a buck by leaving out the power source for the relay coil. The keying cable to the radio had a &#039;hot&#039; and &#039;ground&#039;, but both were hot until you keyed the radio&#039;s mike.&nbsp; The keying cable was wired across the radio relay&#039;s coil. Placed the linear relay&#039;s coil directly in parallel to the relay coil in the radio. Quick way to tell was to look at the keying jack on the amplifier. If the outer body of the jack had an insulating washer under it, a footswitch alone won&#039;t do the job. And if the body of the RCA jack is grounded, you&#039;re good to go with a footswitch.And if you get tired of the foot switch, you can put a relay in the radio put a RCA jack on the rear panel and key it with a patch cord.We sell a kit to do this.&nbsp; It&#039;s on Ebay at 45 bucks. The price is borderline out of reason, but that&#039;s fleabay-nomics. Or you can wire up your own.&nbsp; Not that complex.<img src="https://imagizer.imageshack.com/img923/4078/gp9joq.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" />73</blockquote>

[QUOTE="nomadradio, post: 803608, member: 22"] Yup! Older Swan amplifiers saved a buck by leaving out the power source for the relay coil. The keying cable to the radio had a 'hot' and 'ground', but both were hot until you keyed the radio's mike. The keying cable was wired across the radio relay's coil. Placed the linear relay's coil directly in parallel to the relay coil in the radio. Quick way to tell was to look at the keying jack on the amplifier. If the outer body of the jack had an insulating washer under it, a footswitch alone won't do the job. And if the body of the RCA jack is grounded, you're good to go with a footswitch. And if you get tired of the foot switch, you can put a relay in the radio put a RCA jack on the rear panel and key it with a patch cord. We sell a kit to do this. It's on Ebay at 45 bucks. The price is borderline out of reason, but that's fleabay-nomics. Or you can wire up your own. Not that complex. [img]https://imagizer.imageshack.com/img923/4078/gp9joq.jpg[/img] 73 [/QUOTE]

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