Re: [Repeater-Builder] Another TKR-820 Question
;-) - Original Message - From: "N9WYS" <[EMAIL PROTECTED]> To: Sent: Thursday, March 08, 2007 2:48 PM Subject: RE: [Repeater-Builder] Another TKR-820 Question To paraphrase a hymn; "Go put it on the mountain!" Maybe you have the ultimate critic's approval! Sorry - I just couldn't resist. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson snip If it's good to go by the critics, we'll put it on the mountain soon. de WD7F John in Tucson Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.8/714 - Release Date: 3/8/2007 10:58 AM
RE: [Repeater-Builder] Another TKR-820 Question
To paraphrase a hymn; "Go put it on the mountain!" Maybe you have the ultimate critic's approval! Sorry - I just couldn't resist. Mark - N9WYS -Original Message- From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson snip If it's good to go by the critics, we'll put it on the mountain soon. de WD7F John in Tucson
Re: [Repeater-Builder] Another TKR-820 Question
Well, I figured it out. I guess there's at least one guru ;-) who knows how the line-out works. Me. Man, I hate surface mount technology, especially when your only copy of the service manual is a fuzzy pdf from a scan ! Thanks to Dave's (K7IOU) younger eyes. FYI-IYGAS:I'ts good sounding audio, much better than discriminator audio which has been de-emphasized with a capacitor in the feedback of an audio amp in the controller. Kenwood says it's 600 ohms, -10dBm, -6dB/octave, 300 - 3000, however it appeared very sharp and still required a 0.0047 uf in the audio feedback. Since it used switched line-out, it caused a nice little chirp when the repeater input squelched. Discovering how to eliminate the CO switching was the secret. Plus, DTMF detection works great with this audio so it will remain in the configuration. If it's good to go by the critics, we'll put it on the mountain soon. de WD7F John in Tucson - Original Message - From: "WD7F - John in Tucson" <[EMAIL PROTECTED]> To: Sent: Tuesday, March 06, 2007 6:04 PM Subject: [Repeater-Builder] Another TKR-820 Question The line-out de-emphasized audio on pin 10 of the accessory jack of the TKR-820 is switched by COR. Discriminator audio is continuous. Does any Kenwood guru know what signal is responsible for switching off the audio when COR is not active? It appears that the microprocessor on the Display Panel could via Q6 and R45, but it doesn't appear to be the case in real life. Anybody know. I'd be happy to take it off line or call you on the phone (my nickel). de WD7F John in Tucson
[Repeater-Builder] Another TKR-820 Question
The line-out de-emphasized audio on pin 10 of the accessory jack of the TKR-820 is switched by COR. Discriminator audio is continuous. Does any Kenwood guru know what signal is responsible for switching off the audio when COR is not active? It appears that the microprocessor on the Display Panel could via Q6 and R45, but it doesn't appear to be the case in real life. Anybody know. I'd be happy to take it off line or call you on the phone (my nickel). de WD7F John in Tucson
