UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Magnetic Loop Receiving Aerial (Gary Tempest)

Philips210 · 25th Nov 2017, 1:05 pm

Hi

Thanks also to Andrew2 and Radio Wrangler for your positive comments.

The 4-247 transistors originally from Radio Wrangler gave better performance than the Motorola 2N5109s, the 4-247s seem to have more gain at the higher frequencies. Perhaps my 2N5109s were slightly low spec.

One small point about the 1mH RFC in the power distribution box, Yesterday, I went to order a couple more from CPC (order code FT00799) but now they're no longer available so an alternative needs to be found.

The fixed copper tube loop aerial on my fence works well and I'm next going to try a rotatable loop along the lines that Bazz and Radio Wrangler described.

Regards
Symon.

25th Nov 2017, 1:05 pm	#169
Philips210 Nonode Join Date: May 2007 Location: Redruth, Cornwall, UK. Posts: 2,573	Re: Magnetic Loop Receiving Aerial (Gary Tempest) Hi Thanks also to Andrew2 and Radio Wrangler for your positive comments. The 4-247 transistors originally from Radio Wrangler gave better performance than the Motorola 2N5109s, the 4-247s seem to have more gain at the higher frequencies. Perhaps my 2N5109s were slightly low spec. One small point about the 1mH RFC in the power distribution box, Yesterday, I went to order a couple more from CPC (order code FT00799) but now they're no longer available so an alternative needs to be found. The fixed copper tube loop aerial on my fence works well and I'm next going to try a rotatable loop along the lines that Bazz and Radio Wrangler described. Regards Symon.