Tag Archives: FRG-7

Kostas’ Yaesu FRG-7 adjustment that improves opposite sideband rejection

Many thanks to SWLing Post contributor, Kostas (SV3ORA), who shares the following video and writes:

In this 7.8Mb video (attached) is my solution for “converting” the Yaesu FRG-7 for single signal reception on SSB:

Not a mod actually, no additional filters, no soldering of any kind. Just tune the BFO on USB and on LSB a bit far away from the 455KHz ceramic filter (using the transformer for LSB and the capacitor for USB, as the manual states). As the video shows, this provides the near to
carrier selectivity to cut off the unwanted sideband.

The price you pay is more high frequencies (but in the wanted sideband) and a bit attenuated low frequencies as the filter is effectively shifted to higher frequencies. Very high frequencies cut-off is helped by the tone control of the receiver to some point.

This is a cost-free mod and requiring even no soldering skills, neither any mod to the receiver. Now as you tune the bands in SSB and CW, you do not hear the same signal twice. On AM mode nothing changes, since the BFO is switched off in this mode.

Many thanks for sharing this, Kostas! This seems like a simple adjustment for one of my all-time favorite receivers!

Post readers: Check out Kostas’ website for more modifications, ideas and radio projects.

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Now in the shack: A Yaesu Musen FRG-7

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Photo sent by Shawn.

In late May, as I was packing for two months of travel in Canada, I received a message from long-time SWLing Post reader, Shawn Aiken.  Shawn was seeking the right home for his Yaesu FRG-7 and Hallicrafters S-38 receivers.

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I was very interested–especially in the FRG-7. Many SWL friends (Robert Gulley and Mike Hansgen, to name just a couple) love their FRG-7s. I’d been waiting for the right opportunity to snag one at a local hamfest. I’m also a Hallicrafters fan and love the front panel design of the S-38 series: so classy.

I asked Shawn how much he’d like for the receivers–I was very much interested.

Not only would he not accept payment, but he insisted on paying the shipping as well. I felt apprehensive about accepting such a generous gift. Shawn replied:

“Although I understand your reticence, Thomas, just count this as one of the perks of the job that you’ve undertaken and, from what I can tell from a distance, taken on and done well.”

That statement made my day. Thanks, Shawn!

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The FRG-7 now sits in my shack and I’m learning my way around its unique tuning mechanism. It’s a beauty, too: I love the utilitarian front panel and dials/controls.

Other than needing a little DeOxit on some of the pots and switches, it works beautifully!

I’ve been so busy since returning from Canada, I haven’t had the FRG-7 on the air much. That’ll all change, though, as my Fall/Winter listening season kicks in. I’m already looking forward to it.

Thanks again, Shawn! I’ll make sure both of these radios have a good home here in my shack!

Readers: Do you have a Yaesu FRG-7? Any tips/tricks? Please comment!

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