Re: Direct Connection between FSL and PL 360?


Kenny Murray
 

has anyone tried simply wrapping the ferrite with 8 turns of wire and then allowing that to be connected to a longer piece of wire.




======================== Kenneth J. Murray VO1KJM EM: murraykj709@... Telephone: 506-962-8401 ======================== Inmarsat: AOR WEST: 011-870-76-4156467 ============================================================================= Confidentiality : This message is intended only for the use of the individual or entity to which it is adressed and may contain information which is confidential and privileged. Confidentiality and privilege are not lost by this email having been sent to the wrong person. If you are not the intended recipient or the person responsible to deliver it to the intended recipient, please notify us by email and delete this document immediately. Any distribution, reproduction or other of this email by unintended recipient is prohibited.

On Wednesday, July 7, 2021, 02:13:21 a.m. ADT, Gary DeBock via groups.io <d1028gary@...> wrote:


On Tue, Jul 6, 2021 at 07:16 PM, Steve Ratzlaff wrote:

Well, I'm afraid without some real unsoldering work which would leave the FSL unusable, your idea won't work. The Pl360/365/SSB etc. all use the SiLabs DSP chip which tunes the antenna inductance (which plugs into the radio in this radio's unique case). The antenna inductance has to be in the correct range to tune the AMBC band. The FSL's tuning cap has to be disconnected.

Plus the Pl360 et al have a small approx. 1" ferrite rod loopstick inside the radio which is always in the circuit and which can interact with the plug in antenna.

Steve

All of Steve's comments on the PL-360 have been experimentally verified. The PL-360 stock loopstick is the deafest antenna in Ultralight history, but it does have one nice redeeming factor-- it is easily unplugged and discarded. But as Steve says, an even worse internal antenna stays in the PL-360 circuit even when you do this.

Back a few years I designed 7.5 inch (19cm) Longwave and Medium Wave plug-in loopsticks for the PL-360, which worked like gangbusters and were ordered by 25 hobbyists. The big advantage of these enhanced loopsticks is that no radio "surgery" on the PL-360 is required. These loopsticks will work equally well with all the new SSB variants of the PL-360, and the related technical article is posted at https://dreamcrafts.box.com/s/x6k75b5crnw79yx8gy9hnzlz7ad89lta

Gary DeBock (in Puyallup, WA, USA)



 

Join main@UltralightDX.groups.io to automatically receive all group messages.