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76  eHam Forums / Mobile Ham / RE: Yaesu FT-897D vs Yaesu FT-857D - will appreciate some light on the issue on: February 04, 2013, 01:04:51 PM
The FT897 is a FT857 in a larger case with different laid out buttons.

The internals are identical which is why you won't find any substantial differences.
77  eHam Forums / Mobile Ham / RE: Used HF transceivers that would be good for mobile on: February 02, 2013, 06:25:06 PM
By far the best mobile hf radio is the Kenwood TS480. Easy to use with a 200w version as well.
78  eHam Forums / Antennas and Towers and more / RE: Cobwebb Antenna Mod on: January 30, 2013, 08:17:00 AM
Owning an original I would say to sacrifice 10m if you have any problems as performance on 10m isn't brilliant. I think there's too much interaction with the 12m element.
79  eHam Forums / Antennas and Towers and more / RE: Remote tuner suggestions for doublet on: January 27, 2013, 07:10:21 PM
SGC230. A quick Google for sgc230 balanced antenna should take you to the site of a G4 who used one with ladderline as well as at the centre of a doublet.
80  eHam Forums / Antennas and Towers and more / RE: Help Me With Antenna Decision on: January 25, 2013, 12:30:30 PM
Another vote for the G3TPW Cobbweb although I would build the G3TXQ variant as it is far easier to tune.

20-17-15-12-10m full size dipoles in a 8'x8' antenna.
81  eHam Forums / Elmers / RE: Odd antenna tweak? on: January 21, 2013, 08:10:58 AM
Sounds like corrosion in one of the connections.
82  eHam Forums / Elmers / RE: How much of a help is 6 DB? on: January 18, 2013, 12:17:45 PM
Quote from: K5LXP on January 18, 2013, 08:18:19 AM

500W to 1500W = 4.77dB
Being a "big gun" instead of a "little pistol" = priceless.


I got that much and more by changing antennas. Best antennas working the best they can first and then the power.

No point putting out 1.5kW if you can't hear anyone.
83  eHam Forums / Antennas and Towers and more / RE: Is my signal going where I want it? on: January 15, 2013, 03:43:00 PM
Quote from: WD4ELG on January 14, 2013, 10:07:49 PM

Something I just noticed, I see some BIG hills close by.  That could certainly be a factor with propagation for you to EU.


Really it won't be.
84  eHam Forums / Antennas and Towers and more / RE: Dipole made from coax - possible? on: January 14, 2013, 01:44:53 PM
Google Double bazooka dipole.
85  eHam Forums / Elmers / RE: qrp vs. 100 watts on: January 08, 2013, 07:07:23 AM
The difference between a GAP and a full length dipole won't be 10dB. At best it'll be around 3-4dB. 100W over 10W is 10dB.

Now I know it is reciprocal with the antennas but a 3-4dB difference on receive at your end is around half a S point.
86  eHam Forums / Antennas and Towers and more / RE: Are these CB Silver rods? on: January 08, 2013, 07:05:18 AM
Quote from: M6CLS
Is this just a CB silver rod with a 9.1 unun stuck to the bottom? It is around 18ft which is about the right size to. I use a 9.1 unun with a 10m windsock.

Carl.

Pretty much Carl. And they really suck on 80m and 40. They start being usable from 20 up. And despite the claims, you do need radials otherwise you'll get a lot of common mode on the coax.

You would find no benefit over what you already have.
87  eHam Forums / Mobile Ham / RE: Jeep Liberty Tarheel antenna issue on: December 29, 2012, 11:00:55 AM
The Breedlove mount is the way to go.
88  eHam Forums / Mobile Ham / RE: What Car or Truck Would Make the Best Mobile Platform? on: December 26, 2012, 02:45:46 PM
Quote from: W7MJM on December 22, 2012, 03:22:49 PM

What about the diesel engine Dodge/Mercedes/Freightliner Sprinter Van? Anyone had success using that vehicle as a mobile HF platform? I've seen a lot of them in service as FedEx delivery trucks here in the U.S.A. I understand they're quite popular in Europe. Any hams out there have experience with them?

My local ham emporium uses a Mercedes Sprinter.
89  eHam Forums / Mobile Ham / RE: What Car or Truck Would Make the Best Mobile Platform? on: December 26, 2012, 02:44:41 PM
Quote from: W7MJM on December 22, 2012, 03:37:23 AM
Get a diesel vehicle: No spark plugs = No ignition noise


If only that were true. Modern diesels use common rail systems so use electronic injectors the same as petrol cars do and therefore suffer from the same possibility of RFI from the injectors.
90  eHam Forums / Elmers / RE: Unable to tune FT-450D in AM or FM on: December 26, 2012, 04:20:04 AM
The FT857 and FT897 work the same way as you describe Charles.
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