I don't understand why the power load difference between AM or SSB...
Legal limit on AM is 375W carrier, at 100% modulation you get 1500W. In
terms of peak power 1500W AM = 1500W SSB. Now... if that's not what your
doing the equation changes.
Bill N2BC
----- Original Message -----
From: "Will Matney" <craxd1@verizon.net>
To: <amps@contesting.com>
Sent: Sunday, October 02, 2005 3:50 PM
Subject: Re: [Amps] Power cord to use when converting AL-80B to 240 volts?
> Mike,
>
> That was one of the reasons I used them plus they were cheaper than going
> and buying a piece of SO cord and a plug. They make some smaller for large
> window air conditioners running on 220 Vac too. However, I just went and
> looked at my dryer cord and it couldn't be over 14 gage, maybe 12 at the
> most as it's only about 1" wide if that. One of those same flat grey
> cables. It did use a 3/4" conduit clamp instead of a 1/2" though. If I
> recall, most range cords are smaller than a dryer cord, and the circuit
> doesn't require as large of a breaker, I may be wrong. I imagine why the
> cords are as cheap as they are is where their mass produced. You can find
> them cheaper at the surplus houses like H&R. I bought mine at a supplier
> who specializes in HVAC, and appliance parts named M&R Supply in
> Huntington, WV. Of course I had a discount there at the time where I was a
> business. Lowes and Home Depot has them about as cheap.
>
> On AM/SSB amps, it takes more as not only do you have those power peaks
> but you have a carrier that has to be supported. Most amps are made for
> both so you have to size everything around that usage unless you'll never
> operate it on AM.
>
> Best,
>
> Will
>
> *********** REPLY SEPARATOR ***********
>
> On 10/2/05 at 3:13 PM m.ford wrote:
>
>>----- Original Message -----
>>From: "Neal Sacon" <neal@sacon.net>
>>To: <AMPS@contesting.com>
>>Sent: Sunday, October 02, 2005 2:09 PM
>>Subject: [Amps] Power cord to use when converting AL-80B to 240 volts?
>>
>>
>>> You're probably thinking about range and dryer cords and plugs as
>>examples
>>> of "actual 240 v. power cord" but you really don't need range or dryer
>>cord,
>>> plugs or receptacles for your application - you're not pulling nearly
>>> enough current to justify wire gauges that heavy and all you'd end up
>>with
>>> are cumbersome cables and bulky plugs with a lot of unused capacity.
>>Dryers
>>> and ranges need at least 50 amps at 240 volts; your amp needs 10 amps at
>>240
>>> volts.
>>
>>Dryers and ranges are resistive loads (cept the dryer motor) and do not
>>produce voice modulated current peaks that like to see very low mains
>>resistance. Nice cheap upgrade for any amp.
>>
>>Mike k1ern
>>
>>>
>>>
>>>
>>> So, I'm not sure why you wouldn't leave the cord and just replace the
>>120VAC
>>> plug supplied with a 240 v. (e.g., one that looks like a "regular" plug
>>> except that the flat pins are perpendicular to each other instead of
>>> parallel) after you change the jumpers and fuses.
>>>
>>>
>>>
>>> 73 Neal N7RX
>>>
>>> _______________________________________________
>>
>>_______________________________________________
>>Amps mailing list
>>Amps@contesting.com
>>http://lists.contesting.com/mailman/listinfo/amps
>
>
>
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|