Hi
Simple - feed it in at the high side of the crystal.
Still easy - pop out the crystal and feed it in there.
More complex - re-wire the base of Q101 so it's detached from all the caps and
crystals. It's now a comm emitter buffer. AC couple the signal in there.
Of course you still have
I would question the ability to change it. Not familiar with the radio, but
fcontrol feeds back to the 12.8Mhz oscillator by a varicap. If its part of
the pll of the radio then no. If its a RIT control then as mentioned yes.
The RIT will no longer work.
Regards
Paul
WB8TSL
On Sun, Nov 4, 2012 at
Can anyone explain the five day delay in Mr. Gray's mail?
-Original Message-
From: John Ackermann N8UR
Sent: Sunday, November 04, 2012 6:23 AM
Joe, the question is whether the DDS spurs and noise on the FE-5680A are
strong enough to interfere with your measurements. I suspect that in
Several of the large carriers have had all manner of issues due to the storm;
not only network issues but mail servers as well.
Peter
On 11/4/2012 11:02 AM, Bill Hawkins wrote:
Can anyone explain the five day delay in Mr. Gray's mail?
-Original Message-
From: John Ackermann N8UR
John,
The radio is on 2M.
Joe Gray
W5JG
On Sun, Nov 4, 2012 at 5:23 AM, John Ackermann N8UR j...@febo.com wrote:
Joe, the question is whether the DDS spurs and noise on the FE-5680A are
strong enough to interfere with your measurements. I suspect that in the
HF/VHF range, you'd probably
On Tue, Oct 30, 2012 at 5:28 PM, Joseph Gray jg...@zianet.com wrote:
Is the programmable FE-5680A suitable to replace the 12.8 MHz
reference in a Midland XTR? If so, where do I feed the rubidium into
the circuit
The long term characteristics of the Rb are very good. But short term a
Hi Joe,
The reference oscillator is only part of the story. Being a typical FM radio
the normal method is to observe when the carrier is in the center of the
discriminator's bandpass. The particular center point is not a constant, per
se,
because the discriminator is typically adjusted so that
Joseph Gray wrote:
Internet is flaky lately. I'll be brief, as I'm sending this from my
phone.
I don't need timenut accuracy for this. I want to make a setup for
measuring off the air, so local amateurs can have some way to check
a radio.
Using a service
