The standard 20 kHz roofing filter would work fairly well if incorporated with a 12 kHz DSP filter. Ron Castro Chief Technical Officer Results Radio, LLC N6IE www.N6IE.com (Formerly N6AHA) __________
I listened to the audio clip, but I wasn't sure which radio was which. It sounded like you switched back and forth a few times during the recording. To help with the comparison, you might want to lis
I got a nice e-mail from Jack Burchfield at Ten Tec about the AM distortion problem. He listened to my recording and agreed that the Orion II didn't sound as good as it should, and explained that the
The new audio clips comparing the two receivers is currently posted on my site at www.n6ie.com. The clips are about 1 MB each, so if you have dial-up, it could take some time. BTW...my website has no
Absolutely you should ground your tower to your shack, as well as to your AC ground with no less than a #4 conductor, which I believe is an NEC requirement. The problem arises when there is a lightni
Jim: Check my website again for an update on what you heard. After an e-mail from TT, I learned that the hang time of the AGC must be increased to 3-4 seconds to alleviate the distortion. So I made a
Tonno: I sounds like there may be a problem in your radio. I am using my Orion II with 2.037j in the 160 meter contest this weekend with NR and NB with BW down to 100 Hz with no problem. Maybe reload
What kind of headphones are you using? Orions are a bit fussy about impedances being too high or too low. 32 Ohms is apparently the best match. As already pointed out, check all the menu settings und
OK...in that case I would suspect the plug on the headphones is wired wrong or is defective. Can you test it with other headsets? Ron N6IE www.N6IE.com (Formerly N6AHA) ______________________________
Check the wiring. Once in a while, Heil has been known to get the pins mixed up. Also check for the usual in the mic and cables: cold solder joints, broken wires or shields, etc. Ron N6IE www.N6IE.co
It also does a great job on QRN from garbage disposal which my wife always seems to run just as I'm about to call a rare DX station. The disposal's signal is so strong, I think it could work DXCC if
I exchanged e-mails this week with one of the new owners of INRAD with a suggestion about marketing an low-drift OCXO mod to fix the warm-up drift problem on the Orions and Orion II's, and he wants t
I imagine there is a way to use an external GPS referenced10 MHz oscillator to stabilize a 44.45 MHz Master Oscillator, but I'll bet it would be expensive! The 10 MHz GPS stabilized part is a no-brai
The only accurate way to determine key-clicks is by using the method the ARRL uses in their more recent product reviews. It requires a spectrum analyzer with 10 Hz RBW, scanning 10 kHz of spectrum us
It probably wouldn't even need an OCXO, just a really stable TCXO like the 20 MHz unit Kenwood uses. I have one in my TS-870 and even though it does not run when the rig is turned off, it is still ro
Looks interesting and one that might be worthy of consideration. Here's a question: is the phase noise specification of the Orion dependant *only* on the phase noise characteristic of the TCXO, or ar
I do remember those days! SB-101, FT-301, Swan "three-drifty". I also remember coast-to-coast phone calls that cost more in a minute than I made in an hour and you couldn't hear the other person. Why
Very interesting! Did you ever take a look inside to see if there was a visible difference in the TCXO units? Ron N6IE www.N6IE.com (Formerly N6AHA) _______________________________________________ Te
Well said, Martin! I agree. Ron N6IE www.N6IE.com (Formerly N6AHA) _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listin
Actually, most transverters use the heterodyne principle to move frequencies up or down, so the local oscillator in the transverter is the critical frequency determining element. Still, 20 Hz off can