OpenBCM V1.07b12 (Linux)

Packet Radio Mailbox

DB0FHN

[JN59NK Nuernberg]

 Login: GUEST





  
G0FTD  > FT-817   28.12.06 15:58l 33 Lines 1038 Bytes #999 (0) @ WW
BID : 080217361PZT
Read: DG1KRJ GUEST DL1RX DH1NHM VE7HFY DG4IAK
Subj: More FT817 trivia
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<ZL2BAU<GB7PZT
Sent: 061228/1354Z @:GB7PZT.#24.GBR.EU [Kidderminster] #:21708 XSERV410h
Date: Thu, 28 Dec 2006 13:54:13 +0000
From: g0ftd@gb7pzt.#24.gbr.eu (Andy)
To: ft-817@ww

Subject: More FT817 trivia


Back to current again.

Just a little info for anyone intererested.

The rx gain setting (accessable via power on+holding A+B+C) can add another
20mA drain between min and max. I turned mine up a bit to compensate for the
very small antenna I use for 160m.

I also see that the display light adds another 20mA too.

I also changed the deviation via this set of menu's too.

Since just about every FM rx seems to use a fairly wide IF filter, even when
classed as a 25 or 12.5Khz radio, the tx deviation might be set appropriatly
for such channelling, but the IF af filters are never truly tight enough.

So we all end up turning up our tx deviation to compensate for everyone elses
wide IF filters.

Doing so I can now detect the difference in tonal response on tx when
switching
the microphone tone switch, the two way one, and add's that "brightness"
that I always felt it lacked a little of.

- Andy -

G0FTD @ GB7PZT


Read previous mail | Read next mail


 19.07.2025 05:26:44lGo back Go up